HIARCS Chess Software Latest News
This is where we will announce the most recent additions to our website. If you have visited us before and want to know what has changed, take a look here first. We will place notices here regarding product updates, scheduled releases etc.
- Mid September 2024 Online Book Access update, over 123 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 62,184,720 positions/moves, 2,712,309 variations based on 2,198,194 high quality human games
- September 2024 Tournament CTG Book update, now 32 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 32,028,077 positions/moves and 1,875,823 variations based on 1,759,080 top quality games
- September 2024 Online Book Access update, over 122 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 62,113,791 positions/moves, 2,708,451 variations based on 2,194,926 high quality human games
- Mid August 2024 Online Book Access update, over 122 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 62,078,340 positions/moves, 2,706,866 variations based on 2,193,738 high quality human games
- August 2024 Online Book Access update, over 122 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,974,485 positions/moves, 2,701,432 variations based on 2,189,320 high quality human games
- Mid July 2024 Online Book Access update, over 121 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,824,266 positions/moves, 2,693,935 variations based on 2,183,174 high quality human games
- July 2024 Online Book Access update, over 121 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,781,142 positions/moves, 2,691,994 variations based on 2,181,704 high quality human games
- Mid June 2024 Tournament CTG Book update, now 31.7 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 31,747,976 positions/moves and 1,857,872 variations based on 1,738,579 top quality games
- Mid June 2024 Online Book Access update, now over 122 million positions with statistics - all positions and moves deeply analysed with play recommendations.
- Mid June 2024 Online Book Access update, over 121 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,680,124 positions/moves, 2,686,802 variations based on 2,173,649 high quality human games
- June 2024 Online Book Access update, over 121 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,486,802 positions/moves, 2,657,927 variations based on 2,157,991 high quality human games
- May 2024 Online Book Access update, over 121 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,280,180 positions/moves, 2,650,545 variations based on 2,137,850 high quality human games
- Mid April 2024 Online Book Access update, over 121 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,246,233 positions/moves, 2,649,069 variations based on 2,136,745 high quality human games
- April 2024 Online Book Access update, over 120 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,116,155 positions/moves, 2,642,386 variations based on 2,131,266 high quality human games
- Mid March 2024 Tournament CTG Book update, now 31.4 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 31,397,311 positions/moves and 1,833,692 variations based on 1,717,647 top quality games
- Mid March 2024 Online Book Access update, over 120 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 61,086,392 positions/moves, 2,641,100 variations based on 2,130,283 high quality human games
- HIARCS Chess Explorer Pro v1.3.3 released with HCE Pro 1.3.3 on macOS and HCE Pro 1.3.3 on PC Windows Supports Windows 10 and 11; macOS 11 BigSur and later including latest macOS Sonoma
- March 2024 Online Book Access update, over 120 million positions with statistics - all positions and moves deeply analysed with play recommendations. Human Reference book 60,969,113 positions/moves, 2,635,174 variations based on 2,125,481 high quality human games
- HIARCS Chess Explorer Pro v1.3.2 released with HCE Pro 1.3.2 on macOS and HCE Pro 1.3.2 on PC Windows Supports Windows 10 and 11; macOS 11 BigSur and later including latest macOS Sonoma
- HIARCS Chess Explorer Pro v1.3.1 released with HCE Pro 1.3.1 on macOS and HCE Pro 1.3.1 on PC Windows Key improvements include:
- February 2024 Online Book Access update, around 120 million positions with statistics - all positions and moves deeply analysed with play recommendations. New books include the 86th Tata Steel 2024 games downloadable for customers. Human Reference book 60,515,728 positions/moves, 2,614,223 variations based on 2,109,688 high quality human games
- mid January 2024 Online Book Access update, around 120 million positions with statistics - all positions and moves deeply analysed with play recommendations. New books include the strongest games from the 2023 Rapid and Blitz World Championships, downloadable for customers. Human Reference book 60,188,446 positions/moves, 2,599,996 variations based on 2,099,729 high quality human games
- January 2024 Online Book Access update, around 120 million positions with statistics - all positions and moves deeply analysed with play recommendations. New books include the strongest games from the 2023 Rapid and Blitz World Championships, downloadable for customers. Human Reference book 60,110,541 positions/moves, 2,595,892 variations based on 2,096,336 high quality human games
- Mid December 2023 Online Book Access update, around 120 million positions with statistics - all positions and moves deeply analysed with play recommendations Human Reference book 60,043,251 positions/moves, 2,592,899 variations based on 2,094,124 high quality human games
- Mid December 2023 Tournament CTG Book update, now over 31 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
- December 2023 Online Book Access update, over 122 million positions with statistics - all positions and moves deeply analysed with play recommendations Human Reference book 59,933,758 positions/moves, 2,587,443 variations based on 2,089,798 high quality human games
- mid November 2023 Online Book Access update, over 122 million positions with statistics - all positions and moves deeply analysed with play recommendations Human Reference book 59,878,037 positions/moves, 2,584,983 variations based on 2,087,895 high quality human games
- November 2023 Online Book Access update, over 122 million positions with statistics - all positions and moves deeply analysed with play recommendations Human Reference book 59,782,581 positions/moves, 2,579,994 variations based on 2,083,687 high quality human games
- mid October 2023 Online Book Access update, over 122 million positions with statistics (over 1 million added!) - all positions and moves deeply analysed with play recommendations Human Reference book 59,714,811 positions/moves, 2,576,992 variations based on 2,081,362 high quality human games
- October 2023 Online Book Access update, over 121 million positions with statistics - all positions and moves deeply analysed with play recommendations Human Reference book 58,725,914 positions/moves, 2,533,360 variations based on 2,049,831 high quality human games
- Apple has released the new macOS 14 Sonoma. The good news is our products already support macOS 14 Sonoma and we have tested them with the latest available macOS Sonoma. HIARCS Chess Software has been supporting Apple Mac OS since 1995.
- HIARCS Chess Explorer Pro supports latest macOS 14 Sonoma
- HIARCS Chess Explorer supports latest macOS 14 Sonoma
- September 2023 Online Book Access update, over 120 million positions with statistics - all positions and moves deeply analysed with play recommendations Human Reference book 58,551,773 positions/moves, 2,525,138 variations based on 2,043,375 high quality human games
- September 2023 Tournament CTG Book update, now over 34.5 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 34,469,699 positions/moves and 2,040,450 variations based on 1,817,696 top quality games
- Mid August 2023 Online Book Access update, over 120 million positions, with statistics - all analysed with play recommendations Human Reference book 58,514,938 positions/moves, 2,523,541 variations based on 2,042,135 high quality human games
- update to HIARCS Chess Explorer Pro v1.2.1 released with HCE Pro 1.2.1 on macOS and HCE Pro 1.2.1 on PC Windows Key improvements include:
- August 2023 Online Book Access update, over 120 million positions, with statistics - all analysed with play recommendations Human Reference book 58,400,762 positions/moves, 2,517,924 variations based on 2,037,489 high quality human games
- Major 2023 update to HIARCS Chess Explorer Pro v1.2 released with HCE Pro 1.2 on macOS and HCE Pro 1.2 on PC Windows Key improvements include:
- Improved user interface features
- July 2023 Online Book Access update, over 120 million positions, with statistics - all analysed with play recommendations Human Reference book 58,238,325 positions/moves, 2,510,244 variations based on 2,031,435 high quality human games
- June 2023 Online Book Access update, over 120 million positions, with statistics - all analysed with play recommendations Human Reference book 58,085,906 positions/moves, 2,502,838 variations based on 2,025,665 high quality human games
- May 2023 Tournament CTG Book update, now over 35.7 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 35,768,194 positions/moves and 1,892,610 variations based on 2,012,477 top quality games
- May 2023 Online Book Access update, over 120 million positions, with statistics - all analysed with play recommendations Human Reference book 57,927,447 positions/moves, 2,495,182 variations based on 2,019,397 high quality human games
- April 2023 Online Book Access update, over 119 million positions, with statistics - all analysed with play recommendations Human Reference book 57,402,741 positions/moves, 2,468,832 variations based on 1,997,747 high quality human games
- March 2023 Online Book Access update, over 119 million positions, with statistics - all analysed with play recommendations Human Reference book 57,216,868 positions/moves, 2,460,057 variations based on 1,990,786 high quality human games
- March 2023 Tournament CTG Book update, now over 35.3 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 35,328,859 positions/moves and 2,176,516 variations based on 2,012,477 top quality games
- February 2023 Online Book Access update, over 118 million positions, with statistics - all analysed with play recommendations Human Reference book 57,079,081 positions/moves, 2,453,185 variations based on 1,985,203 high quality human games
- Mid January 2023 Online Book Access update, over 118 million positions, with statistics - all analysed with play recommendations Human Reference book 56,986,044 positions/moves, 2,449,307 variations based on 1,982,872 high quality human games
- January 2023 Online Book Access update, over 118 million positions, with statistics - all analysed with play recommendations Human Reference book 56,766,040 positions/moves, 2,438,934 variations based on 1,975,213 high quality human games
- Mid December 2022 Online Book Access update, over 118 million positions, with statistics - all analysed with play recommendations Human Reference book 56,529,121 positions/moves, 2,415,932 variations based on 1,952,016 high quality human games
- December 2022 Online Book Access update, over 117 million positions, with statistics - all analysed with play recommendations Human Reference book 56,442,561 positions/moves, 2,411,553 variations based on 1,948,450 high quality human games
- HIARCS 15.2 outright winner of 58th CSVN Tournament with 9/10, +8=2-0
- November 2022 Tournament CTG Book update over 34.9 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 34,901,500 positions/moves and 2,146,514 variations based on 1,984,592 top quality games
- November 2022 Online Book Access update, over 116 million positions, with statistics - all analysed with play recommendations Human Reference book 56,402,259 positions/moves, 2,409,068 variations based on 1,946,068 high quality human games
- Mid October 2022 Online Book Access update, over 116 million positions, with statistics - all analysed with play recommendations Human Reference book 56,334,847 positions/moves, 2,406,099 variations based on 1,943,815 high quality human games
- Updated iPhone HIARCS Chess version 13.88 released
- Updated iPad HIARCS Chess version 13.8.9 released
- October 2022 Online Book Access update, over 116 million positions, with statistics - all analysed with play recommendations Human Reference book 56,251,757 positions/moves, 2,401,838 variations based on 1,940,316 high quality human games
- Updated iPhone HIARCS Chess version 13.86 released
- Updated iPad HIARCS Chess version 13.8.6 released
- September 2022 Online Book Access update, over 115 million positions, with statistics - all analysed with play recommendations Human Reference book 56,074,043 positions/moves, 2,393,486 variations based on 1,934,927 high quality human games
- HIARCS Chess Explorer v1.12.2 free customer update for Apple Mac OS X now available
- Mid August 2022 Online Book Access update, over 115 million positions, with statistics - all analysed with play recommendations Human Reference book 56,011,221 positions/moves, 2,390,767 variations based on 1,931,609 high quality human games
- August 2022 Online Book Access update, over 114 million positions, with statistics - all analysed with play recommendations Human Reference book 55,698,541 positions/moves, 2,374,239 variations based on 1,917,030 high quality human games
- HIARCS Chess Explorer v1.12.1 free customer update for Apple Mac OS X now available
- July 2022 Online Book Access update, over 113 million positions, with statistics - all analysed with play recommendations Human Reference book 55,129,132 positions/moves, 2,345,551 variations based on 1,893,381 high quality human games
- HIARCS Chess Explorer v1.12 free customer update for Apple Mac OS X now available
- June 2022 Online Book Access update, over 113 million positions, with statistics - all analysed with play recommendations Human Reference book 54,955,154 positions/moves, 2,337,274 variations based on 1,886,727 high quality human games
- HIARCS 15.1 joint winner of 57th CSVN Programmers Tournament
- HIARCS Chess Explorer Pro v1.1 update released for macOS and PC Windows
- May 2022 Online Book Access update, over 113 million positions, with statistics - all analysed with play recommendations Human Reference book 55,184,994 positions/moves, 2,349,579 variations based on 1,897,360 high quality human games
- mid April 2022 Online Book Access update, over 113 million positions, with statistics - all analysed with play recommendations Human Reference book 55,122,706 positions/moves, 2,346,895 variations based on 1,895,325 high quality human games
- April 2022 Online Book Access update, over 111 million positions, with statistics - all analysed with play recommendations Human Reference book 55,097,339 positions/moves, 2,345,056 variations based on 1,893,017 high quality human games
- March 2022 Online Book Access update, over 111 million positions, with statistics - all analysed with play recommendations Human Reference book 54,959,509 positions/moves, 2,338,573 variations based on 1,887,670 high quality human games
- February 2022 Online Book Access update, over 110 million positions, with statistics - all analysed with play recommendations Human Reference book 54,844,113 positions/moves, 2,332,770 variations based on 1,882,934 high quality human games
- HIARCS Chess Explorer Pro released for macOS and PC Windows HIARCS Chess Explorer Pro is a new highly advanced chess database, analysis and playing program for PC Windows and Apple Mac computers. It offers a very powerful user interface with the strongest ever HIARCS chess engine and world class chess database features. This unique combination offers easy to use features managing chess databases, preparation, analysis, play and training for players of all abilities from beginner to Grandmasters and beyond.
- January 2022 Online Book Access update, over 108 million positions, with statistics - all analysed with play recommendations Human Reference Book 54,850,343 positions/moves, 2,336,837 variations based on 1,890,150 high quality human games
- Mid December 2021 Online Book Access update, over 108 million positions, with statistics - all analysed with play recommendations Human Reference Book 54,773,992 positions/moves, 2,333,587 variations based on 1,887,809 high quality human games
- December 2021 Online Book Access update, over 108 million positions, with statistics - all analysed with play recommendations Human Reference Book 54,318,575 positions/moves, 2,309,448 variations based on 1,867,364 high quality human games
- Mid November 2021 Online Book Access update, over 107 million positions, with statistics - all analysed with play recommendations Human Reference Book 54,137,733 positions/moves, 2,299,815 variations based on 1,859,228 high quality human games
- November 2021 Online Book Access update, over 107 million positions, with statistics - all analysed with play recommendations Human Reference Book 54,065,531 positions/moves, 2,296,082 variations based on 1,856,083 high quality human games
- HIARCS Chess Explorer v1.11 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.11 free customer update for PC Windows now available
- Mid October 2021 Online Book Access update, over 107 million positions, with statistics - all analysed with play recommendations Human Reference Book 54,003,464 positions/moves, 2,293,378 variations based on 1,854,025 high quality human games
- October 2021 Tournament CTG Book update over 29.4 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 29,465,051 positions/moves and 1,813,194 variations based on 1,777,433 top quality games
- Updated iPhone HIARCS Chess version 13.85 released
- Updated iPad HIARCS Chess version 13.8.5 released
- October 2021 Online Book Access update, over 106 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,940,300 positions/moves, 2,290,070 variations based on 1,851,045 high quality human games
- September 2021 Online Book Access update, over 106 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,687,385 positions/moves, 2,2748,709 variations based on 1,839,878 high quality human games
- August 2021 Online Book Access update, over 106 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,606,911 positions/moves, 2,274,630 variations based on 1,839,878 high quality human games
- July 2021 Tournament CTG Book update over 28.3 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
- Mid July 2021 Online Book Access update, over 106 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,524,576 positions/moves, 2,271,123 variations based on 1,836,049 high quality human games
- July 2021 Online Book Access update, over 106 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,481,097 positions/moves, 2,268,666 variations based on 1,833,750 high quality human games
- June 2021 Online Book Access update, over 106 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,527,019 positions/moves, 2,323,226 variations based on 1,826,591 high quality human games
- HIARCS Chess Explorer v1.10.1 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.10.1 free customer update for PC Windows now available
- May 2021 Online Book Access update, over 106 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,420,757 positions/moves, 2,318,030 variations based on 1,822,247 high quality human games
- April 2021 Online Book Access update, over 105.4 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 28,039,830 positions/moves and 1,617,579 variations based on 1,4749,503 top quality games
- Mid April 2021 Online Book Access update, over 104 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,117,417 positions/moves, 2,251,773 variations based on 1,820,639 high quality human games
- April 2021 Online Book Access update, over 103.8 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,086,499 positions/moves, 2,249,760 variations based on 1,818,639 high quality human games
- Mid March 2021 Online Book Access update, over 103.8 million positions, with statistics - all analysed with play recommendations Human Reference Book 53,004,006 positions/moves, 2,246,273 variations based on 1,816,090 high quality human games
- March 2021 Online Book Access update, over 103.7 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,933,431 positions/moves, 2,242,676 variations based on 1,813,106 high quality human games
- Mid February 2021 Online Book Access update, over 103 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,923,649 positions/moves, 2,242,254 variations based on 1,812,786 high quality human games
- February 2021 Online Book Access update, over 103 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,842,365 positions/moves, 2,237,978 variations based on 1,809,210 high quality human games
- Mid January 2021 Tournament CTG Book update over 26.6 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 26,631,111 positions/moves and 1,910,946 variations based on 4,962,159 top quality games
- Mid January 2021 Online Book Access update, over 103 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,827,375 positions/moves, 2,237,359 variations based on 1,808,725 high quality human games
- January 2021 Online Book Access update, over 102 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,807,748 positions/moves, 2,236,554 variations based on 1,808,105 high quality human games
- Mid December 2020 Online Book Access update, over 102 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,747,098 positions/moves, 2,233,005 variations based on 1,803,001 high quality human games
- December 2020 Online Book Access update, over 102 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,660,763 positions/moves, 2,228,876 variations based on 1,799,633 high quality human games
- Updated iPhone HIARCS Chess version 13.84 released
- Updated iPad HIARCS Chess version 13.8.4 released
- November 2020 Online Book Access update, over 101.9 million positions, with statistics - all analysed with play recommendations
- November 2020 Online Book Access update, over 101.4 million positions, with statistics - all analysed with play recommendations
- HIARCS Chess Explorer v1.9.5 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.9.5 free customer update for PC Windows now available
- October 2020 Tournament CTG Book update over 25.4 million positions, with statistics - all analysed with play recommendations Tournament CTG Book with 25,412,066 positions/moves and 1,950,470 variations. Includes statistics from 4,943,505 top quality games
- October 2020 Online Book Access update, over 100.7 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,295,476 positions/moves, 2,212,011 variations based on 1,786,725 high quality human games
- Mid September 2020 Online Book Access update, over 100.5 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,267,738 positions/moves, 2,210,814 variations based on 1,782,870 high quality human games
- September 2020 Online Book Access update, over 100.5 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,194,024 positions/moves, 2,2207,209 variations based on 1,782,870 high quality human games
- Mid August 2020 Online Book Access update, over 100.4 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,161,849 positions/moves, 2,205,836 variations based on 1,781,841 high quality human games
- August 2020 Online Book Access update, over 100.3 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,059,184 positions/moves, 2,199,844 variations based on 1,778,348 high quality human games
- Mid July 2020 Online Book Access update, over 100 million positions, with statistics - all analysed with play recommendations Human Reference Book 52,049,254 positions/moves, 2,199,419 variations based on 1,778,033 high quality human games
- July 2020 Tournament CTG Opening Book update, 24.6 million position for Book Subscribers available now Plus online books:
- July 2020 Online Book Access update, over 99.8 million positions, with statistics - all analysed with play recommendations Human Reference Book 51,969,995 positions/moves, 2,195,431 variations based on 1,774,723 high quality human games
- Updated iPhone HIARCS Chess version 13.83 released
- Updated iPad HIARCS Chess version 13.8.3 released
- Mid June 2020 Online Book Access update, over 99.8 million positions, with statistics - all analysed with play recommendations Human Reference Book 51,962,701 positions/moves, 2,195,113 variations based on 1,774,495 high quality human games
- June 2020 Online Book Access update, over 99.7 million positions, with statistics - all analysed with play recommendations
- Mid May 2020 Online Book Access update, over 99.5 million positions, with statistics - all analysed with play recommendations
- May 2020 Online Book Access update, over 99.3 million positions, with statistics - all analysed with play recommendations
- Mid April 2020 Online Book Access update, over 99.2 million positions, with statistics - all analysed with play recommendations
- April 2020 Tournament CTG Opening Book update, now 24.2 million position for Book Subscribers available now
- April 2020 Online Book Access update, over 99.1 million positions, with statistics - all analysed with play recommendations
- Mid March 2020 Online Book Access update, over 99.1 million positions, with statistics - all analysed with play recommendations
- March 2020 Online Book Access update, over 97.4 million positions, with statistics - all analysed with play recommendations
- Mid February 2020 Online Book Access update, over 97.3 million positions, with statistics - all analysed with play recommendations
- February 2020 Online Book Access update, over 97.2 million positions, with statistics - all analysed with play recommendations
- Late January 2020 Online Book Access update, over 97 million positions, with statistics - all analysed with play recommendations
- January 2020 Tournament CTG Opening Book update, now 22.4 million position for Book Subscribers available now
- January 2020 Online Book Access update, over 96.3 million positions, with statistics - all analysed with play recommendations
- WISHING ALL OUR CUSTOMERS AND VISITORS A HAPPY NEW YEAR FOR 2020
- Christmas 2019 Online Book Access update, over 96.3 million positions, with statistics - all analysed with play recommendations
- HIARCS Chess Explorer for Mac free update for customers
- HIARCS Chess Explorer for PC free update for customers
- Mac Chess Explorer users can read the latest online manual for HIARCS Chess Explorer for Mac here
- PC Chess Explorer users can read the latest online manual for HIARCS Chess Explorer for PC here
- Mid December 2019 Online Human Reference and GM++ Opening Books - over 30,000 new positions with statistics and unique play recommendations
- December 2019 Online Human Reference and GM++ Opening Books - over 75,000 new positions with statistics and unique play recommendations
- Late November 2019 Online Human Reference and GM++ Opening Books - over 25,000 new positions with statistics and unique play recommendations
- Mid November 2019 Online Human Reference and GM++ Opening Books - over 110,000 new positions with statistics and unique play recommendations
- November 2019 Online Human Reference and GM++ Opening Books - 50,000 new positions with statistics and unique play recommendations
- October 2019 Online Human Reference and GM++ Opening Books - 80,000 new positions with statistics and unique play recommendations
- October 2019 Tournament CTG Opening Book update, now 22.4 million position for Book Subscribers available now
- October 2019 online Tournament Opening Book now available in HIARCS Chess Explorer, now 22.4 million positions
- HIARCS Chess Explorer v1.9.4 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.9.4 free customer update for PC Windows now available
- October 2019 Online Human Reference and GM++ Opening Books - 75,000 new positions with statistics and unique play recommendations, now 73.1 million
- Mid September 2019 Online Human Reference and GM++ Opening Books - over 140,000 new positions with statistics and unique play recommendations
- September 2019 Online Human Reference and GM++ Opening Books - combined with tournament book over 95 million positions with statistics and unique play recommendations
- Mid August 2019 Online Human Reference and GM++ Opening Books - combined with tournament book over 94.8 million positions with statistics and unique play recommendations
- End July 2019 Online Human Reference and GM++ Opening Books - combined with tournament book over 94.5 million positions with statistics and unique play recommendations
- Mid July 2019 Online Human Reference and GM++ Opening Books - combined with tournament book 94 million positions with statistics and unique play recommendations
- July 2019 Online Human Reference and GM++ Opening Books - combined over 72 million positions with statistics and unique play recommendations
- July 2019 Tournament Opening Book update, now 22.1 million position for Book Subscribers available now
- Mid June 2019 Online Human Reference and GM++ Opening Books - with latest openings
- June 2019 Online Human Reference and GM++ Opening Books - with latest openings
- Mid May 2019 Online Human Reference and GM++ Opening Books - with latest openings
- May 2019 Online Human Reference and GM++ Opening Books - with latest openings including from the Grenke Classic
- Mid April 2019 Online Human Reference and GM++ Opening Books - combined over 71 million positions with statistics and unique play recommendations
- April 2019 Online Human Reference and GM++ Opening Books - combined over 71 million positions with statistics and unique play recommendations
- April 2019 Tournament Opening Book update, now 21.9 million position for Book Subscribers available now
- Late March 2019 Online Human Reference and GM++ Opening Books - combined over 71 million positions with statistics and unique play recommendations
- March 2019 Online Human Reference and GM++ Opening Books - combined now over 71 million positions with statistics and unique play recommendations - now includes Aeroflot 2019
- February 2019 Online Human Reference and GM++ Opening Books - combined now over 71 million positions with statistics and unique play recommendations - now includes Gibraltar 2019
- Tata Steel Tournament special 2019 Online Human Reference and GM++ Opening Books - combined now over 71 million positions with statistics and unique play recommendations
- January 2019 Tournament Opening Book update, now 20.9 million position for Book Subscribers available now
- January 2019 Online Human Reference and GM++ Opening Books - combined now over 71 million positions with statistics and unique play recommendations
- Mid December 2018 Online Human Reference and GM++ Opening Books - combined now over 71 million positions with statistics and unique play recommendations
- December 2018 Online Human Reference and GM++ Opening Books - combined now over 71 million positions with statistics and unique play recommendations
- HIARCS Chess Explorer v1.9.3 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.9.3 free customer update for PC Windows now available
- Mid November 2018 Online Human Reference and GM++ Opening Books - combined now almost 71 million positions with statistics and unique play recommendations
- November 2018 Online Human Reference and GM++ Opening Books - combined now almost 71 million positions with statistics and unique play recommendations
- Mid October 2018 Online Human Reference and GM++ Opening Books - combined now almost 71 million positions with statistics and unique play recommendations
- October 2018 Online Human Reference and GM++ Opening Books - combined now almost 70 million positions with statistics and unique play recommendations
- October 2018 Tournament Opening Book update, now 19.5 million position for Book Subscribers available now
- September 2018 Online Human Reference and GM++ Opening Books - combined now almost 70 million positions with statistics and unique play recommendations
- Updated iPhone HIARCS Chess version 13.82 released
- Updated iPad HIARCS Chess version 13.8.2 released
- Updated iPhone HIARCS Chess version 13.81 released
- Updated iPad HIARCS Chess version 13.8.1 released
- Mid August 2018 Online Human Reference and GM++ Opening Books - combined now almost 70 million positions with statistics and unique play recommendations
- August 2018 Online Human Reference and GM++ Opening Books - combined now almost 70 million positions with statistics and unique play recommendations
- Updated iPhone HIARCS Chess version 13.80 released
- Updated iPad HIARCS Chess version 13.8.0 released
- July 2018 Tournament Opening Book update, now 19 million position for Book Subscribers available now
- July 2018 Human Reference Book update, now 49 million position for Book Subscribers available now
- HIARCS X winner of 53rd CSVN Programmers Tournament with 9/9!
- Please read our updated Privacy Policy here
- April 2018 Tournament Opening Book for Book Subscribers now available
- April 2018 Human Reference Book update for Book Subscribers now available
- HIARCS Chess Explorer v1.9.2 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.9.2 free customer update for PC Windows now available
- March 2018 Human Reference Book update for Book Subscribers now available
- January 2018 Tournament Opening Book for Book Subscribers now available
- Updated iPhone HIARCS Chess version 13.75 released
- Updated iPad HIARCS Chess version 13.7.9 released
- July 2017 Tournament Opening Book for Book Subscribers now available
- July 2017 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- Updated iPhone HIARCS Chess version 13.74 released
- May 2017 HIARCS wins 51st CSVN computer chess tournament
- April 2017 Extra update to Human Reference and GM++ opening books for Book Subscribers now available
- April 2017 Tournament Opening Book for Book Subscribers now available
- April 2017 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- February 2017 Tournament Opening Book for Book Subscribers now available
- February 2017 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- December 2016 Tournament Opening Book for Book Subscribers now available
- December 2016 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- HIARCS Chess Explorer v1.9.1 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.9.1 free customer update for PC Windows now available
- September 2016 Tournament Opening Book for Book Subscribers now available
- September 2016 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- June 2016 Tournament Opening Book for Book Subscribers now available
- June 2016 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- March 2016 Tournament Opening Book for Book Subscribers now available
- March 2016 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- HIARCS Chess Explorer v1.9 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.9 free customer update for PC Windows now available
- Revelation II HIARCS 14 is strongest ever SSDF rated dedicated chess computer at 2929 Elo
- December 2015 Tournament Opening Book for Book Subscribers now available
- December 2015 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- September 2015 Tournament Opening Book for Book Subscribers now available
- September 2015 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- June 2015 Tournament Opening Book for Book Subscribers now available
- June 2015 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- March 2015 Tournament Opening Book for Book Subscribers now available
- March 2015 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- December 2014 Tournament Opening Book for Book Subscribers now available
- December 2014 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- HIARCS Chess Explorer v1.8 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.8 free customer update for PC Windows now available
- Updated iPad HIARCS Chess version 13.7.5 released
- Updated iPad HIARCS Chess version 13.70 released
- Updated iPhone HIARCS Chess version 13.70 released
- September 2014 Tournament Opening Book for Book Subscribers now available
- September 2014 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- June 2014 Tournament Opening Book for Book Subscribers now available
- June 2014 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- HIARCS Revelation is "the strongest dedicated chess computer we have ever tested" - SSDF Rating List
- Update to Human Reference Opening Book for HIARCS Chess Explorer book subscribers
- Update to Human Reference Opening Book for HIARCS Chess Explorer book subscribers
- March 2014 Tournament Opening Book for Book Subscribers now available
- Update to Human Reference Opening Book for HIARCS Chess Explorer book subscribers with latest games
- Update to Online GM+ and Human Reference Opening Book for HIARCS Chess Explorer book subscribers with latest games
- Update to Online Human Reference Opening Book for HIARCS Chess Explorer book subscribers with latest games
- HIARCS Chess Explorer v1.7 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.7 free customer update for PC Windows now available
- December 2013 Online Tournament and Human Reference Opening Book for HIARCS Chess Explorer book subscribers now available
- Mac Deep Junior Yokohama World Computer Chess Champion version available (free for existing DJ13 customers!)
- HIARCS Chess Explorer v1.6 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.6 free customer update for PC Windows now available
- PC Deep Junior Yokohama World Computer Chess Champion version available (free for DJ13 existing customers!)
- Deep Junior Yokohama World Computer Chess Champion version available (free for DJ13 existing customers!)
- New September 2013 Tournament Opening Book Update for Book Subscribers now available
- New September 2013 Online Tournament and Human Reference Opening Book Updates for HIARCS Chess Explorer subscribers now available
- Updated iPhone HIARCS Chess version 13.6 released
- HIARCS wins the 2013 World Chess Software Championship
- Junior wins the 2013 World Computer Chess Championship
- HIARCS Chess Explorer v1.5 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.5 free customer update for PC Windows now available
- New June 2013 Opening Book Update for Book Subscribers now available
- New March 2013 Opening Book Update for Book Subscribers now available
- HIARCS Chess Explorer v1.4 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.4 free customer update for PC Windows now available
- Updated iPad HIARCS Chess version 13.5 released
- HIARCS Chess Explorer v1.3 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.3 free customer update for PC Windows now available
- Updated iPhone HIARCS Chess version 13.5 released
- Updated iPad HIARCS Chess version 13.4 released
- Updated iPhone HIARCS Chess version 13.4 released
- New December 2012 Opening Book Update for Book Subscribers now available
- New Tournament and Human Reference Book available for HIARCS Chess Explorer book subscribers via Opening Explorer online book access
- HIARCS Chess Explorer v1.2 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.2 free customer update for PC Windows now available
- The independent SSDF rating group report Deep HIARCS 14 defeated Deep Fritz 13 at tournament time controls by 28-12 (70% +149 Elo perf).Download Games
- New Deep Junior 13.3 chess engine for Macintosh released
- HIARCS Chess Explorer v1.1 free customer update for Apple Mac OS X now available
- HIARCS Chess Explorer v1.1 free customer update for PC Windows now available
- New September 2012 Opening Book Update for Book Subscribers now available
- The wait is over! - HIARCS Chess Explorer and HIARCS 14 available now for Apple Mac OS
- The wait is over! - HIARCS Chess Explorer and HIARCS 14 available now for PC Windows
- New June 2012 Opening Book Update for Book Subscribers now available
- Deep Junior 13.3 update available (free for existing customers)
- HIARCS Chess Explorer release candidate in testing
- The innovative new HIARCS Chess Explorer product has moved forward to the final beta stage
- New March 2012 Opening Book Update for Book Subscribers now available
- The innovative new HIARCS Chess Explorer product has moved forward to the next beta stage
- Current World Computer Chess Champion Deep Junior 13 released!
- New December 2011 Opening Book Update for Book Subscribers now available
- HIARCS wins the World Chess Software Championship
- Junior wins the World Computer Chess Championship
- New September 2011 Opening Book Update for Book Subscribers now available
- HIARCS iPad 13.3 now available from the AppStore
- HIARCS iPhone 13.31 reviewed by iPhone App Finder, rated 9.4/10!
- HIARCS iPhone 13.3 now available from the AppStore
- HIARCS iPad Chess finishes detailed beta testing, product pages updated
- HIARCS iPhone 13.3 now available from the AppStore
- HIARCS iPad Chess finishes detailed beta testing, product pages updated
- HIARCS iPhone Chess finishes detailed beta testing, product pages updated
- HIARCS iPad Chess goes code complete: release to follow after final beta testing
- HIARCS Chess Explorer development announced to customers
- New June 2011 Opening Book update for Book Subscribers now available
- New Deep Junior 12.5 chess engine for Macintosh released
- Reference book with statistics from top class human games now available - free for HIARCS book subscribers
- PC Deep Junior 12.5 UCI - shared first at Thüringer Computer Chess Championship, Germany, May 2011
- New Deep Junior 12.5 UCI chess engine available now! (free for existing Junior customers)
- New March 2011 Opening Book update for Book Subscribers now available
- Deep Junior 12 and HIARCS 13.2 with Sigma Chess 6.2.1 now available
- HIARCS Chess 12.3 for iPhone now available (free update for existing iPhone customers)
- PC Chess HIARCS 13.2 UCI Update (free for all existing PC HIARCS 13 UCI customers)
- New December 2010 Opening Book update for Book Subscribers now available
- New Deep Junior 12 UCI chess engine available now!
- New September 2010 Opening Book update for Book Subscribers now available
- Much anticipated HIARCS Palm Chess Pro 13.1 released.
- New June 2010 Opening Book Update for Book Subscribers now available
- New HIARCS 13.1 for Pocket PC now available
- New HIARCS Chess Opening Book Subscription now available
- New PC Chess HIARCS 13 UCI Single and Multi-core/processor products released!
- New Deep Junior 11.2 UCI chess engine available now!
- New Sigma Chess 6.2 HIARCS 13 for Apple Macintosh Computers available now!
- New Deep Junior 11.1a UCI chess engine available now!
- New Deep Junior 11.1 UCI chess engine available now!
- New Deep Junior 11.1 UCI chess engine available soon
- Free update for HIARCS Palm Chess Pro owners to version 12.1u
- Download free HIARCS 12.1 Chessbase opening book in ctg format 23Mb - Chessbase GUI on PC needed to read book
- HIARCS 12.1 for Pocket PC chess achieves highest ever rating for a mobile device of 2749 Elo on official SSDF rating list
- The 1992 HIARCS 1.0+ for PC Windows/Dos is available for free download on our free chess software page.
- HIARCS Chess for the iPhone and iPod Touch finally available on the Apple App Store.
- HIARCS on Pocket PC wins 2009 Mescusor Cup in Buenos Aires, Argentina ahead of Grandmasters, while scoring an incredible undefeated 9½/10 points and 2938 Elo performance rating!
- HIARCS wins the 9th International CSVN Tournament in Leiden, The Netherlands, June 2009
- Much anticipated HIARCS Palm Chess Pro finally released
- The new Pocket Chess HIARCS for CEBoard product released. Now Pocket PC chess users can have the strongest chess program native on their Pocket PC.
- HIARCS was runner-up in the 28th Dutch Open Computer Chess Championship. HIARCS was running on a single computer and it's only defeat was to a 40 core, 5 computer cluster "super computer".
- HIARCS 12.1 is the new engine for Pocket Fritz 3
- Sigma Chess 6.1.6 HIARCS 12.1 now available
- HIARCS wins 17th International German Computer Chess Championship ahead of a World class field
- HIARCS 12 UCI SP and MP now available
- HIARCS wins 17th International Paderborn Computer Chess Championship!
- Palm Chess HIARCS 9.7 now available
- Sigma Chess 6.1.5 HIARCS 11.2 is now available
- New HIARCS Forums launched for discussions of HIARCS computer chess, chess and wider subjects with regular competitions and special discounts for registered members
- Free update to HIARCS 11.2 now available
- Free setup installers now available for the original HIARCS versions from 1981 and 1983.
- We have a winner of the resurrect HIARCS challenge!
- Sigma Chess 6.1.4 HIARCS 11 is now available
- Sigma Chess HIARCS 11 is now available for existing owners
- HIARCS 11.1 UCI version which became ICC Computer Chess Blitz Champion 2007 is available as a free update for HIARCS 11 customers
- HIARCS 11 UCI is Internet Chess Club Computer Chess Blitz Champion 2007
- The first prototype Deep HIARCS MP version wins trophy for 3rd place in Dutch Open Championship in Leiden, The Netherlands. Impressively coming above well known programs like Deep Shredder 10, Fruit X, Deep Gandalf, Deep Sjeng and The King. Despite some hardware problems this was a good first outing for Deep Hiarcs MP considering the software only ran in multiprocessor form a week ago!
- The first ever Deep HIARCS multiprocessor version now running on our development machines just in time for the Dutch Open in Leiden!
- HIARCS UCI X54 32 and 64 bit free updates for HIARCS UCI owners now available
- HIARCS UCI now available to buy online
- HIARCS for Palm wins a GM master tournament in the Philippines
- Some outstanding games played by HIARCS for Palm in the independent SSDF testing can be seen and played through online. HIARCS for Palm is the world's top rated Palm chess program.
- Some outstanding games played by PC HIARCS 10 in the independent SSDF testing can be seen and played through online. HIARCS 10 is the world's top rated chess program on the Selective Search rating list.
- Sigma Chess 6.1.3 HIARCS 10 released. Sigma chess now supports engine-engine matches!
- Palm HIARCS 9.6 is now available!
- Mac HIARCS 10 now available for free to registered customers!
- Palm HIARCS' wins against GM Jan Gustafsson.
- Sigma Chess HIARCS 9.60 for Macintosh now available. Includes new Sigma Chess 6.1.1 GUI and HIARCS 9.60 UCI chess engine.
- Palm HIARCS 9.5a Christmas update available
- Palm HIARCS 9.5 competes in the CSS Online Masters 2005 against some of the fastest PCs!
- Palm HIARCS 9.5 version now released offering intermediate levels and other coaching enhancements.
- HIARCS 9.46 Palm Chess Software now available
- Based on customer results Palm Chess HIARCS on Tungsten T3 breaks through the 2600 Elo barrier.
- HIARCS 9.41 Palm Chess Software now available
- HIARCS 9.32 for Palm now available
- HIARCS 9.31 for Palm now available
Monday 16th September 2024
GM++ top human chess book: 29,105,152 positions/moves, 1,286,467 variations based on 1,120,561 GM human games
Tournament Book with 32,028,077 positions/moves and 1,875,823 variations based on 1,759,080 top quality games
Wednesday 11th September 2024
Sunday 1st September 2024
GM++ top human chess book: 29,051,793 positions/moves, 1,283,449 variations based on 1,117,933 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Thursday 15th August 2024
GM++ top human chess book: 29,038,836 positions/moves, 1,282,914 variations based on 1,117,506 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Thursday 1st August 2024
GM++ top human chess book: 28,965,079 positions/moves, 1,278,848 variations based on 1,114,031 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Monday 15th July 2024
GM++ top human chess book: 28,884,859 positions/moves, 1,274,547 variations based on 1,110,386 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Monday 1st July 2024
GM++ top human chess book: 28,871,534 positions/moves, 1,273,955 variations based on 1,103,096 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Wednesday 19th June 2024
Saturday 15th June 2024
GM++ top human chess book: 28,807,609 positions/moves, 1,270,459 variations based on 1,103,096 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Saturday 1st June 2024
GM++ top human chess book: 28,725,546 positions/moves, 1,258,063 variations based on 1,107,821 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Wednesday 1st May 2024
GM++ top human chess book: 28,614,659 positions/moves, 1,255,035 variations based on 1,090,971 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Monday 22nd April 2024
GM++ top human chess book: 28,603,625 positions/moves, 1,254,566 variations based on 1,090,609 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Monday 1st April 2024
GM++ top human chess book: 28,520,806 positions/moves, 1,250,038 variations based on 1,086,715 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Saturday 16th March 2024
GM++ top human chess book: 28,512,678 positions/moves, 1,249,667 variations based on 1,086,440 GM human games
Tournament Book with 31,397,311 positions/moves and 1,833,692 variations based on 1,717,647 top quality games
Friday, 1st March 2024
Separate download available to support older Windows 7 and macOS 10.14 Mojava and Catalina.
Key improvements include:
New stronger HIARCS 15.3.1 chess engine
Much deeper game analysis from H15.3.1
Game analysis includes opening book annotations
Enhanced position analysis views and variation depth with H15.3.1
Improved position learning
Improved handicap levels in game play
Bulk game analysis improvements
New stronger engine opening book
Improved resignation handling
Enhanced tablebase explorer dialog
Automatically backup database before compaction
eBoard sync during replay game
Improved live game support
Improved database search including variations
Enhanced database import for cyrillic
Improved PGN handling for invalid formats
Engine match fix for play from database
Enhanced non-admin user installation
Other minor enhancements
Friday 1st March 2024
GM++ top human chess book: 28,450,147 positions/moves, 1,246,196 variations based on 1,083,510 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Friday, 23rd February 2024
Separate download available to support older Windows 7 and macOS 10.14 Mojava and Catalina.
Key improvements include:
New stronger HIARCS 15.3.1 chess engine
Much deeper game analysis from H15.3.1
Game analysis includes opening book annotations
Enhanced position analysis views and variation depth with H15.3.1
Improved position learning
Improved handicap levels in game play
Bulk game analysis improvements
New stronger engine opening book
Improved resignation handling
Enhanced tablebase explorer dialog
Automatically backup database before compaction
eBoard sync during replay game
Improved live game support
Improved database search including variations
Enhanced database import for cyrillic
Other minor enhancements
Friday, 16th February 2024
New stronger HIARCS 15.3 chess engine
Much deeper game analysis from H15.3
Game analysis includes opening book annotations
Enhanced position analysis views and variation depth with H15.3
Improved handicap levels in game play
Bulk game analysis improvements
New stronger engine opening book
Improved resignation handling
Enhanced tablebase explorer dialog
Automatically backup database before compaction
eBoard sync during replay game
Improved live game support
Improved database search including variations
Enhanced database import for cyrillic
Other minor enhancements
Thursday 1st February 2024
GM++ top human chess book: 28,281,647 positions/moves, 1,238,053 variations based on 1,077,066 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Tuesday 16th January 2024
GM++ top human chess book: 28,288,890 positions/moves, 1,238,256 variations based on 1,077,211 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Monday, 1st January 2024
GM++ top human chess book: 28,230,145 positions/moves, 1,235,030 variations based on 1,074,449 GM human games
Tournament Book with 31,157,316 positions/moves and 1,818,856 variations based on 1,705,014 top quality games
Friday, 15th December 2023
GM++ top human chess book: 28,217,459 positions/moves, 1,234,496 variations based on 1,074,054 GM human games
Friday, 1st December 2023
GM++ top human chess book: 28,155,031 positions/moves, 1,231,187 variations based on 1,071,316 GM human games
Tournament Book with 34,469,699 positions/moves and 2,040,450 variations based on 1,817,696 top quality games
Wednesday, 15th November 2023
GM++ top human chess book: 28,133,736 positions/moves, 1,230,262 variations based on 1,070,593 GM human games
Tournament Book with 34,469,699 positions/moves and 2,040,450 variations based on 1,817,696 top quality games
Wednesday, 1st November 2023
GM++ top human chess book: 28,060,431 positions/moves, 1,226,295 variations based on 1,067,168 GM human games
Tournament Book with 34,469,699 positions/moves and 2,040,450 variations based on 1,817,696 top quality games
Sunday, 15th October 2023
GM++ top human chess book: 28,031,782 positions/moves, 1,225,043 variations based on 1,066,204 GM human games
Tournament Book with 34,469,699 positions/moves and 2,040,450 variations based on 1,817,696 top quality games
Sunday, 1st October 2023
GM++ top human chess book: 27,829,146 positions/moves, 1,215,763 variations based on 1,059,079 GM human games
Tournament Book with 34,469,699 positions/moves and 2,040,450 variations based on 1,817,696 top quality games
Tuesday, 26th September 2023
Friday, 1st September 2023
GM++ top human chess book: 27,748,281 positions/moves, 1,211,698 variations based on 1,055,690 GM human games
Tournament Book with 34,469,699 positions/moves and 2,040,450 variations based on 1,817,696 top quality games
Saturday, 26th August 2023
Wednesday, 16th August 2023
GM++ top human chess book: 27,737,509 positions/moves, 1,211,237 variations based on 1,055,332 GM human games
Saturday, 5th August 2023
Improved engine book
Improved annotations during game analysis
Enhanced database compaction checks
Remove index when asked to forget database
Support localized piece names and letters based on HCE Pro language setting
Improved Database->Find position
Other minor enhancements
Tuesday, 1st August 2023
GM++ top human chess book: 27,657,893 positions/moves, 1,207,163 variations based on 1,051,860 GM human games
Tournament book with 35,768,257 positions/moves and 2,120,477 variations based on 1,892,610 top quality games
Wednesday, 19th July 2023
New HIARCS 15.2 engines with about 50 Elo strength improvement
Improved positional play, book and position learning
Improved handicap weaker levels with Set Elo, improved Elo simulation accuracy
Optional Fortress detection in analysis for Premium customers
New 2023 Local and engine opening books
New 2023 MasterBase23 database with over 575,000 high quality games
New support for Millennium eBoards
Analyse on a physical electronic chess board
Play games against the computer using the eBoard
Supports natural piece movement, sliding pieces, adjusting moves, exchanging pieces
Improved search functions
Improved quick search expressions
Faster searching and extra parameters
New negated quick search using !
Improved database, import and export capabilities
Import multiple databases at once
Detect more ChessBase symbols on CBH/CBV import
Improved support for ChessBase CTG books
Export improvements for PGN/EPUB/CSV/HTML/PDF
Improved support for ISO-8859-1 databases
Auto recovery of databases
Faster start up with many tabs open
Improved Player Explorer and opening reports
New evaluation and best move shortcut icons
Improved evaluation graph strength and quick click navigation
Extra book and tree views, view mulitple books and databases at once
Improved Analysis, caching and highlighting important lines
Improved Annotation of book lines and missed blunders
Click source and destination squares to move
Improved browsing of trees and games
Improved Game List sorting
Improved Live Game viewing
Optional store clock usage in engine match
Restore Play game opening and store clocks
Improved Puzzle mode, hides result and variations
Configurable diagram size for HTML/PDF
Show figurines in Endgame Tablebase navigation
Improved support for Windows scaling and dual monitor resolutions and scaling differences
Improved Print fonts and diagram sizes
Numerous other fixes and enhancements
Saturday, 1st July 2023
GM++ top human chess book: 27,577,650 positions/moves, 1,203,042 variations based on 1,048,543 GM human games
Tournament book with 35,768,257 positions/moves and 2,120,477 variations based on 1,892,610 top quality games
Thursday, 1st June 2023
GM++ top human chess book: 27,509,749 positions/moves, 1,199,475 variations based on 1,045,617 GM human games
Tournament book with 35,768,257 positions/moves and 2,120,477 variations based on 1,892,610 top quality games
Wednesday, 24th May 2023
Monday 1st May 2023
GM++ top human chess book: 27,406,754 positions/moves, 1,194,291 variations based on 1,041,235 GM human games
Tournament book with 35,328,859 positions/moves and 2,176,516 variations based on 2,012,477 top quality games
Saturday 1st April 2023
GM++ top human chess book: 26,923,635 positions/moves, 1,170,007 variations based on 1,021,124 GM human games
Tournament book with 35,328,859 positions/moves and 2,176,516 variations based on 2,012,477 top quality games
Wednesday 1st March 2023
GM++ top human chess book: 26,833,515 positions/moves, 1,165,487 variations based on 1,017,340 GM human games
Tournament book with 35,328,859 positions/moves and 2,176,516 variations based on 2,012,477 top quality games
Tuesday, 21st February 2023
Wednesday 1st February 2023
GM++ top human chess book: 26,745,311 positions/moves, 1,160,842 variations based on 1,013,427 GM human games
Tournament book with 34,901,500 positions/moves and 2,146,514 variations based on 1,984,592 top quality games
Saturday, 14th January 2023
GM++ top human chess book: 26,776,567 positions/moves, 1,162,271 variations based on 1,014,647 GM human games
Tournament book with 34,901,500 positions/moves and 2,146,514 variations based on 1,984,592 top quality games
Sunday, 1st January 2023
GM++ top human chess book: 26,695,818 positions/moves, 1,158,058 variations based on 1,011,350 GM human games
Tournament book with 34,901,500 positions/moves and 2,146,514 variations based on 1,984,592 top quality games
Thursday, 15th December 2022
GM++ top human chess book: 26,628,213 positions/moves, 1,149,680 variations based on 1,001,646 GM human games
Tournament book with 34,901,500 positions/moves and 2,146,514 variations based on 1,984,592 top quality games
Thursday, 1st December 2022
GM++ top human chess book: 26,568,854 positions/moves, 1,146,504 variations based on 999,016 GM human games
Tournament book with 34,901,500 positions/moves and 2,146,514 variations based on 1,984,592 top quality games
Monday, 21st November 2022
Tuesday, 8th November 2022
Tuesday, 1st November 2022
GM++ top human chess book: 26,550,159 positions/moves, 1,144,817 variations based on 997,468 GM human games
Tournament book with 33,448,168 positions/moves and 2,043,808 variations based on 1,874,732 top quality games
Saturday, 15th October 2022
GM++ top human chess book: 26,528,995 positions/moves, 1,143,898 variations based on 996,755 GM human games
Tournament book with 33,448,168 positions/moves and 2,043,808 variations based on 1,874,732 top quality games
Monday, 3rd October 2022
Saturday, 1st October 2022
GM++ top human chess book: 26,466,770 positions/moves, 1,140,582 variations based on 993,966 GM human games
Tournament book with 33,448,168 positions/moves and 2,043,808 variations based on 1,874,732 top quality games
Saturday, 10th September 2022
Thursday, 1st September 2022
GM++ top human chess book: 26,379,155 positions/moves, 1,136,204 variations based on 990,974 GM human games
Tournament book with 33,448,168 positions/moves and 2,043,808 variations based on 1,874,732 top quality games
Friday, 26th August 2022
Monday, 15th August 2022
GM++ top human chess book: 26,359,169 positions/moves, 1,135,372 variations based on 989,672 GM human games
Tournament CTG book with 33,448,168 positions/moves and 2,043,808 variations based on 1,874,732 top quality games
Monday, 1st August 2022
GM++ top human chess book: 25,685,813 positions/moves, 1,100,414 variations based on 959,475 GM human games
Tournament CTG book with 33,448,168 positions/moves and 2,043,808 variations based on 1,874,732 top quality games
Wednesday, 13th July 2022
Friday, 1st July 2022
GM++ top human chess book: 25,573,781 positions/moves, 1,094,782 variations based on 954,891 GM human games
Tournament CTG book with 32,736,668 positions/moves and 2,002,736 variations based on 1,840,802 top quality games
Monday, 6th June 2022
Wednesday, 1st June 2022
GM++ top human chess book: 25,469,902 positions/moves, 1,089,576 variations based on 950,568 GM human games
Tournament CTG book with 32,736,668 positions/moves and 2,002,736 variations based on 1,840,802 top quality games
Monday, 17th May 2022
Tuesday, 10th May 2022
Key improvements include:
New HIARCS 15.1 engines with improved strength and multi-core support
Updated 2022 opening books
Updated 2022 MasterBase database
Improved Annotation display
Improved support for ChessBase CTG books
Improved support for Unicode and figurines in ChessBase CBH databases
Improved copy and paste functions
Improved export to EPUB
Engine match enhancements
New language translations
Auto recovery of databases after restart
Skip p with different names or results
Show existing comments in Puzzle mode
Numerous other fixes and enhancements
Sunday, 1st May 2022
GM++ top human chess book: 25,757,735 positions/moves, 1,104,328 variations based on 962,983 GM human games
Tournament CTG book with 32,736,668 positions/moves and 2,002,736 variations based on 1,840,802 top quality games
Friday, 22nd April 2022
GM++ top human chess book: 25,733,081 positions/moves, 1,103,307 variations based on 962,203 GM human games
Tournament CTG book with 32,736,668 positions/moves and 2,002,736 variations based on 1,840,802 top quality games
Friday, 1st April 2022
GM++ top human chess book: 25,670,452 positions/moves, 1,099,712 variations based on 958,882 GM human games
Tournament CTG book with 30,604,733 positions/moves and 1,895,525 variations based on 1,754,460 top quality games
Tuesday, 1st March 2022
GM++ top human chess book: 25,578,451 positions/moves, 1,095,526 variations based on 955,116 GM human games
Tournament CTG book with 30,604,733 positions/moves and 1,895,525 variations based on 1,754,460 top quality games
Tuesday, 1st February 2022
GM++ top human chess book: 25,486,742 positions/moves, 1,090,539 variations based on 951,196 GM human games
Tournament CTG book with 30,604,733 positions/moves and 1,895,525 variations based on 1,754,460 top quality games
Wednesday, 5th January 2022
Key features include:
Advanced Database Support
HCE database format offers huge databases only limited by memory - 1GB per 8 million games
Fast searching for players, openings, events, material, pawn structure and positions.
Comprehensive game database support (PGN, HCE, reads Chessbase CBH, CBV and EPD)
Extensive game notation with variations, comments, symbols, diagrams and named openings
Export and publish your work, games and preparation to PGN, PDF, EPUB e-book and HTML
Reference databases, manage databases, duplicate search and clean up, watch live games
HIARCS 15 chess engine – more than 200 Elo stronger
Full range of realistic set Elo levels with human like playing style, have your strength matched
Very strong analysis & play, more than 200 Elo stronger than HIARCS 14 WCSC engine
Supports up to 32† threads/cores, and any UCI Chess User Interface (Chessbase/Fritz)
Player Explorer
View reports on players, their games, performances and favourite openings and statistics
Build tree of games and openings of players instantly into a player report with a single click
Automated repertoire summaries for databases and players. Merge misspelled players
Game, Opening and Tree Explorers
Revolutionary multi-source chess trees with moves, statistics from games and advice
Build an opening repertoire tree instantly from database games to learn and prepare openings
Access huge online opening books, view multiple books & Chessbase CTG books simultaneously
Analysis and Evaluation Explorers
Analyse positions and games with multiple engines simultaneously with load management
Multiple lines of analysis with stats, move selection and integrate analysis with game notation
Check games for blunders, inaccuracies and improvements with post game analysis
Custom Playing modes
Play against the computer with human-like play and full range of handicap Elo levels
Choose rating, time controls, start positions and even chess openings and Chess960 for practice
Train with the guess the move feature, learn and improve your tactical and positional play
Coach points out mistakes, shows move quality and hints. Rates your play in Elo points
Engine matches – set up and watch them play or have them play out test or analysis positions
Packaged Databases
Top quality database with 300,000+ Master games, IM/GM annotated games, tactical exercises
Online access to up over to 1,000 GB of endgame tablebases and opening book databases
Local book with latest GM Theory and access to much larger online books
Saturday, 1st January 2021
GM++ Top Human Chess Book: 25,634,190 positions/moves, 1,100,618 variations based on 962,620 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Wednesday, 15th December 2021
GM++ Top Human Chess Book: 25,613,185 positions/moves, 1,099,766 variations based on 961,996 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Wednesday, 1st December 2021
GM++ Top Human Chess Book: 25,106,876 positions/moves, 1,074,657 variations based on 940,346 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Monday, 15th November 2021
GM++ Top Human Chess Book: 24,944,386 positions/moves, 1,064,993 variations based on 929,670 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Monday, 1st November 2021
GM++ Top Human Chess Book: 24,880,981 positions/moves, 1,061,687 variations based on 929,833 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Saturday, 23rd October 2021
Monday, 18th October 2021
GM++ Top Human Chess Book: 24,798,818 positions/moves, 1,057,572 variations based on 929,104 GM human games
Monday, 4th October 2021
Friday, 1st October 2021
GM++ Top Human Chess Book: 24,798,818 positions/moves, 1,057,572 variations based on 926,9376 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Wednesday, 1st September 2021
GM++ Top Human Chess Book: 24,605,590 positions/moves, 1,048,335 variations based on 918,855 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Sunday, 1st August 2021
GM++ Top Human Chess Book: 24,605,590 positions/moves, 1,048,335 variations based on 918,855 GM human games
Tournament CTG Book with 28,323,677 positions/moves and 1,755,342 variations based on 1,727,883 top quality games
Saturday, 24th July 2021
Saturday, 17th July 2021
GM++ Top Human Chess Book: 24,582,225 positions/moves, 1,047,391 variations based on 918,067 GM human games
Tournament CTG Book with 28,039,830 positions/moves and 1,617,579 variations based on 1,4749,503 top quality games
Thursday, 1st July 2021
GM++ Top Human Chess Book: 24,515,689 positions/moves, 1,043,914 variations based on 915,097 GM human games
Tournament CTG Book with 28,039,830 positions/moves and 1,617,579 variations based on 1,4749,503 top quality games
Tuesday, 1st June 2021
GM++ Top Human Chess Book: 24,411,502 positions/moves, 1,038,967 variations based on 911,153 GM human games
Tournament CTG Book with 28,039,830 positions/moves and 1,617,579 variations based on 1,4749,503 top quality games
Monday, 25th May 2021
Saturday, 1st May 2021
GM++ Top Human Chess Book: 24,650,604 positions/moves, 1,110,333 variations based on 907,500 GM human games
Tournament CTG Book with 28,039,830 positions/moves and 1,617,579 variations based on 1,4749,503 top quality games
Monday, 19th April 2021
Human Reference Book 53,117,417 positions/moves, 2,251,773 variations based on 1,820,639 high quality human games
GM++ Top Human Chess Book: 24,309,077 positions/moves, 1,034,020 variations based on 907,048 GM human games
Saturday, 17th April 2021
GM++ Top Human Chess Book: 24,309,077 positions/moves, 1,034,020 variations based on 907,048 GM human games
Tournament CTG Book with 26,631,111 positions/moves and 1,910,946 variations based on 4,962,159 top quality games
Thursday, 1st April 2021
GM++ Top Human Chess Book: 24,253,715 positions/moves, 1,030,980 variations based on 904,351 GM human games
Monday, 15th March 2021
GM++ Top Human Chess Book: 24,223,295 positions/moves, 1,029,741 variations based on 903,438 GM human games
Monday, 1st March 2021
GM++ Top Human Chess Book: 24,163,873 positions/moves, 1,026,667 variations based on 900,831 GM human games
Wednesday, 17th February 2021
GM++ Top Human Chess Book: 24,160,792 positions/moves, 1,026,541 variations based on 900,731 GM human games
Monday, 1st February 2021
GM++ Top Human Chess Book: 24,082,722 positions/moves, 1,022,459 variations based on 897,293 GM human games
Monday, 18th January 2021
GM++ Top Human Chess Book: 24,076,550 positions/moves, 1,022,213 variations based on 897,102 GM human games
Friday, 8th January 2021
GM++ Top Human Chess Book: 24,068,653 positions/moves, 1,021,895 variations based on 896,862 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Wednesday, 16th December 2020
GM++ Top Human Chess Book: 24,054,871 positions/moves, 1,020,472 variations based on 893,326 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Tuesday, 1st December 2020
GM++ Top Human Chess Book: 23,987,598 positions/moves, 1,017,199 variations based on 890,596 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Thursday, 26th November 2020
Monday, 23rd November 2020
Sunday, 1st November 2020
Saturday, 10th October 2020
Tuesday, 6th October 2020
Thursday, 1st October 2020
GM++ Top Human Chess Book: 23,815,133 positions/moves, 1,008,801 variations based on 883,682 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Thursday, 15th September 2020
GM++ Top Human Chess Book: 23,799,631 positions/moves, 1,008,155 variations based on 883,190 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Wednesday, 2nd September 2020
GM++ Top Human Chess Book: 23,739,971 positions/moves, 1,005,189 variations based on 880,720 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Thursday, 20th August 2020
GM++ Top Human Chess Book: 23,733,111 positions/moves, 1,004,919 variations based on 880,503 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Saturday, 1st August 2020
GM++ Top Human Chess Book: 23,636,571 positions/moves, 999,222 variations based on 877.239 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Tuesday, 21st July 2020
GM++ Top Human Chess Book: 23,633,678 positions/moves, 999,105 variations based on 877.147 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Friday, 10th July 2020
Human Reference Book 51,969,995 positions/moves, 2,195,431 variations based on 1,774,723 high quality human games
GM++ Top Human Chess Book: 23,562,007 positions/moves, 995,493 variations based on 874,115 GM human games
Tournament CTG Book with 24,599,456 positions/moves and 1,917,305 variations based on 4,936,363 top quality games
Wednesday, 1st July 2020
GM++ Top Human Chess Book: 23,562,007 positions/moves, 995,493 variations based on 874,115 GM human games
Tournament CTG Book with 24,267,425 positions/moves and 1,900,921 variations based on 4,920,878 top quality games
Thursday, 25th June 2020
Wednesday, 17th June 2020
GM++ Top Human Chess Book: 23,556,341 positions/moves, 995,271 variations based on 873,943 GM human games
Tournament CTG Book with 24,267,425 positions/moves and 1,900,921 variations based on 4,920,878 top quality games