Chess Engines Diary

Yakka -  UCI chess engine. Author: CJDalrymple, Rating Chess Engines Diary CEDR=3259 Yakka is a Chess Engine writen in object pascal (Delphi) that implements the Universal Chess Interface (UCI) protocol. It is recommended to use a Chess GUI application such as Arena, Banksia GUI Cute Chess. This project is licenced under the MIT Licence Future Endevours (TODO) In no particular order:   - Much experimenting / tweaking   - MultiPV   - Pondering      - Singular Extensions   - Endgame Tablebases   - NNUE Yakka - what's new? Yakka v1.6 24 Sep 2026 release. Implemented support for Syzygy Table Bases and MultiPV. Playing strength gain due to search parameter tuning and bug fixes. You can download the precompiled Windows executable: 'Yakka v1.6 x64.exe' This will run on x86-64 CPU's which support the BMI2 and AVX2 instruction sets. Yakka 1.3 vs other engines: Fire 10 mingw 1.5/20 -17 20 Games YuliGM Pro 20 0/16 -16 16 Games Laser 1.8 beta JA 2/12 -8...

Yakka -  UCI chess engine. Author: CJDalrymple, Rating Chess Engines Diary CEDR=2894 Yakka is a Chess Engine writen in object pascal (Delphi) that implements the Universal Chess Interface (UCI) protocol. It is recommended to use a Chess GUI application such as Arena, Banksia GUI Cute Chess. This project is licenced under the MIT Licence Future Endevours (TODO) In no particular order:   - Much experimenting / tweaking   - MultiPV   - Pondering      - Singular Extensions   - Endgame Tablebases   - NNUE Yakka 1.5 what's new? 22 Jan 2026 release. Strength gain using larger NNUE net and output buckets. You can download the precompiled Windows executable: 'Yakka v1.5 x64.exe' This will run on x86-64 CPU's which support the BMI2 and AVX2 instruction sets. Yakka 1.3 vs other engines: Fire 10 mingw 1.5/20 -17 20 Games YuliGM Pro 20 0/16 -16 16 Games Laser 1.8 beta JA 2/12 -8 12 Games Critter 1.6a 1.5/12 -9 12 Games Pawn 4.0.4 JA 1/12 -10 12 Games Ple...

Yakka -  UCI chess engine. Author: CJDalrymple, Rating Chess Engines Diary CEDR=2894 Yakka is a Chess Engine writen in object pascal (Delphi) that implements the Universal Chess Interface (UCI) protocol. It is recommended to use a Chess GUI application such as Arena, Banksia GUI Cute Chess. This project is licenced under the MIT Licence Future Endevours (TODO) In no particular order:   - Much experimenting / tweaking   - MultiPV   - Pondering      - Singular Extensions   - Endgame Tablebases   - NNUE Yakka 1.4 what's new? 11 Nov 2025 release. Multiple bug fixes and improved NNUE implementation. You can download the precompiled Windows executable: 'Yakka v1.4 x64.exe' This will run on x86-64 CPU's which support the BMI2 and AVX2 instruction sets. Yakka 1.3 vs other engines: Fire 10 mingw 1.5/20 -17 20 Games YuliGM Pro 20 0/16 -16 16 Games Laser 1.8 beta JA 2/12 -8 12 Games Critter 1.6a 1.5/12 -9 12 Games Pawn 4.0.4 JA 1/12 -10 12 Games Plenty...

Yakka -  UCI chess engine. Author: CJDalrymple, Rating Chess Engines Diary CEDR=2894 Yakka is a Chess Engine writen in object pascal (Delphi) that implements the Universal Chess Interface (UCI) protocol. It is recommended to use a Chess GUI application such as Arena, Banksia GUI Cute Chess. This project is licenced under the MIT Licence Future Endevours (TODO) In no particular order:   - Much experimenting / tweaking   - MultiPV   - Pondering      - Singular Extensions   - Endgame Tablebases   - NNUE Yakka 1.3 what's new? 10 Aug 2025 release. Multiple bug fixes, implemented pondering and improved NNUE implementation. You can download the precompiled Windows executable: 'Yakka v1.3 x64.exe' This will run on x86-64 CPU's which support the BMI2 and AVX2 instruction sets. Yakka 1.2 vs other engines: Sloth 2.0 JA 6/6 +6 6 Games Reggz 0.6.0 6/6 +6 6 Games Stro4k 3.0 JA 5/6 +4 6 Games Trinket 3.5.0 JA 3/6 +0 6 Games Topple 0.8.1 JA 3/6 +0 6 Games T...

Yakka -  UCI chess engine. Author: CJDalrymple, Rating Chess Engines Diary CEDR=2894 Yakka is a Chess Engine writen in object pascal (Delphi) that implements the Universal Chess Interface (UCI) protocol. It is recommended to use a Chess GUI application such as Arena, Banksia GUI Cute Chess. This project is licenced under the MIT Licence Future Endevours (TODO) In no particular order:   - Much experimenting / tweaking   - MultiPV   - Pondering      - Singular Extensions   - Endgame Tablebases   - NNUE v.1.2: Yakka v1.2 8 Feb 2025 release. Multiple bug fixes & improvements. Changed evaluation from HCE to NNUE. You can download the precompiled Windows executable: 'Yakka v1.2 x64.exe' This will run on x86-64 CPU's which support the BMI2 and AVX2 instruction sets. Yakka 1.1 vs other engines: Eveann 1.73 8.5/10 +7 10 Games Seawall 20240926 2.5/10 -5 10 Games Amelia 0.12 8/8 +8 8 Games Purple Panda 18 8/8 +8 8 Games Sapling 1.1.1 1.5/8 -5 8 Gam...

Another group E-11 of the Amateur Chess Engine Section has ended. The Yakka 1.1 engine won and the Belette 3.0.0 engine took 2nd place. These two engines advanced to the E-10 group. More tournaments are ongoing, the next results on our website will be available soon. Chess Engines Diary Team 👍Promotion  to Group E-10:  Yakka 1.1, Belette 3.0.0.  👎Relegation to Group E-12:   Jence 1.0.2, Kobol 1.1 .  All CEDR  515.173 games download  (01.12.2024)  💾  90 games from the tournament download 👍 @chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3"  💻Asus Zenbook, AMD Ryzen 9 6900HX, RAM 32,0 GB 🖬 GUI-Arena R Engine CEDR Score Ya Be Sh Ch St Ca Ha Ch Je Ko S-B 01 Yakka 1.1 2894 17.5/18 11 11 =1 11 11 11 11 11 11  140,00  02 Belette 3.0.0 2400 15.5/18 00 1= 11 11 11 11 11 11 11  109,00  03 Shuffle 5.2.0 2450 10.0/18 00 0= 1= 01 01 == 10 11 11  65,25  04 Chess...

Yakka 1.0 -  UCI chess engine. Author: CJDalrymple Rating Chess Engines Diary CEDR=2894 Yakka is a Chess Engine writen in object pascal (Delphi) that implements the Universal Chess Interface (UCI) protocol. It is recommended to use a Chess GUI application such as Arena, Banksia GUI Cute Chess. This project is licenced under the MIT Licence Future Endevours (TODO) In no particular order:   - Much experimenting / tweaking   - MultiPV   - Pondering      - Singular Extensions   - Endgame Tablebases   - NNUE v.1.1: 15 Sept 2024 release. Multiple bug fixes, improved time management, improved passed pawn evaluation, added singular extensions and late move pruning. You can download the precompiled Windows executable: 'Yakka v1.1 x64.exe' This will run on x86-64 CPU's which support the BMI2 instruction set. Yakka 1.1 download  

New chess engine: Yakka 1.0 First release. You can download the precompiled Windows executable : 'Yakka v1.0 x64.exe' This will run on x86-64 CPU's which support the BMI2 instruction set. Yakka is a Chess Engine writen in object pascal (Delphi) that implements the Universal Chess Interface (UCI) protocol. It is recommended to use a Chess GUI application such as Arena, Banksia GUI Cute Chess. This project is licenced under the MIT Licence Future Endevours (TODO) In no particular order:   - Much experimenting / tweaking   - MultiPV   - Pondering      - Singular Extensions   - Endgame Tablebases   - NNUE Yakka 1.0 download