Mac Deep Junior Yokohama UCI Chess Engine

A World Computer Chess Champion chess engine for Mac OS
Suitable for all players including the World Chess Champion
Platform: Runs on any Mac since 2010, Intel or the new Apple Silicon (M1 chips).
All Apple macOS™ 10.10 or later; Yosemite, El Capitan, Sierra, High Sierra, Mojave, Catalina & Big Sur
Playing ability: World Chess Championship strength (3200+ Elo)†
Engine authors: Amir Ban and Shay Bushinsky, Opening book author: GM Alon Greenfeld

Deep Junior Yokohama is a many time World Computer Chess Champion and is as aggressive and attacking as ever with a wonderful sense for king attacks and dynamic play - an essential partner for any attack minded chess player. The Deep Junior chess engine is unique in its understanding of compensation and therefore chess players of all standards can use Junior to gain a deep insight into their games and prepare new exciting lines involving sacrifices with confidence. The chess knowledge has naturally also been improved so the Deep Junior series are the strongest ever and capable of supporting up to 40 cores simultaneously for the ultimate performance.

Key Features:

Deep Junior UCI is a chess engine and is available by software download only. Deep Junior UCI requires a Mac running Mac OS 10.10 or later with a UCI compatible chess GUI (a chess User Interface is NOT included in the package). We recommend the excellent HIARCS Chess Explorer products which supports UCI chess engines like Deep Junior UCI.

Deep Junior Yokohama UCI for Apple Mac (Full multi core/processor version)

The ultimate Deep Junior UCI chess engine which can run on single, dual and quad core/processor machines and beyond - now capable of supporting up to 40 cores!
Licensed by personal license name and code emailed to you shortly after purchase

Price*: £37.50 / €41.50 / $49.95
Buy Deep Junior Yokohama for PC Windows Now!

The following payment options are available: Credit Card, Solo/Switch/Maestro, Bank/Wire Transfer, Paypal, Check/Cheque and Cash. SSL (Secure Sockets Layer) encryption technology is used to transfer your data securely. The encryption is certified by VeriSign. As soon as payment is received you will immediately be sent an email with your personalised license name and code with download links for your purchased Mac Deep Junior 13 chess engine package.


Thank you to GM Alon Greenfeld for his contribution of the excellent Deep Junior Opening Book.

Thanks also to a number of other supporters who prefer to remain incognito.

Photograph of Kasparov and Deep Junior by John Henderson, thank you.

We thank Eugene Nalimov and Andrew Kadatch for their kind permission to use their access code (copyright (c) Eugene Nalimov) and decompression code (copyright (c) Andrew Kadatch) for Nalimov tablebases in the Deep Junior chess engine.