Yakka 1.3 - new version chess engine

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
Thrawn 2.1 JA	3/6	+0	6 Games
Roc2 2.0.4	1/6	-4	6 Games
Renegade 1.1.9 JA	0.5/6	-5	6 Games
Pioneer 0.3.2 JA	4/4	+4	4 Games
Mufasa 0.2.1 JA	4/4	+4	4 Games
Shallow 5	3/4	+2	4 Games
GOOB 1.8.9 JA	3/4	+2	4 Games
Fatalii 0.9.0	3/4	+2	4 Games
Gnuchess 6.2.9 JA	3/4	+2	4 Games
Sentinel 2.0	2/4	+0	4 Games
Odonata 1.0.0 JA	1/4	-2	4 Games
YuliGM 19	0/4	-4	4 Games
Stockfish dev-20250213	0/4	-4	4 Games
Bitbit 1.3	3/3	+3	3 Games
Kopyto 5df55e1	2/2	+2	2 Games
Motsog 22	2/2	+2	2 Games

Yakka 1.3 download