6.0

Changes since 5.0

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• Lazy SMP (Multi Threading)
• ProbCut
• Singular Extension
• Multi-Cut
• Countermove heuristics for move ordering
• History Leaf Pruning

Evaluation

• Draw Pattern Recognition: RvN, RvB, RvRB, RvRN, KPK, OCB, Wrong Bishop
• King safety, and king virtual mobility
• Incremental Eval
• Retuned Eval based on LiChess dataset
• Passed pawn evaluation based on rank

Performance

• Move generation speedup
• NPS increase

Which binary to use?

• Ubunut/Linux 64-bit (not Raspberry Pi): zahak-linux-amd64
• Raspberry Pi 3 family/Android: zahak-linux-arm32
• Raspberry Pi 4: zahak-linux-arm64
• Apple Mac OSX (64-bit, Intel): zahak-darwin-amd64
• Apple Mac OSX (M1 CPU): zahak-darwin-m1-arm64
• MS Windows 32-bit: zahak-windows-386
• MS Windows 64-bit: zahak-windows-amd64