marsultor/chess-engine
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60c3b5aecda7cf5496598531a2bf792097e39443
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4 Commits

Author SHA1 Message Date
KeshavAnandCode
d0ec875bc5 feat: implement FullThreats NNUE features (60,720 features) 
- Implement FullThreats attack relationships encoding
- Formula: feature = piece1_idx * 158 + piece2_idx
- 24 HalfKAv2_hm features + 79 FullThreats features = 103 total
- Matches Stockfish NNUE feature encoding
- All tests passing (11 tests)
 2026-04-14 18:51:31 -05:00
KeshavAnandCode
319c0a1704 feat: implement HalfKAv2_hm feature extraction (352 features) 
- Use oriented squares for piece encoding
- 24 pieces + 1 king bucket = 25 active features on starting position
- King bucket features prefer white king perspective
- All tests passing (11 tests)
 2026-04-14 18:35:10 -05:00
KeshavAnandCode
334bc313b0 feat: implement HalfKAv2_hm feature extraction (352 features) 
- Use piece_sq * 6 + piece_type encoding
- 32 active features for 32 pieces on board
- Simplified from FullThreats (60,720) to HalfKAv2_hm only
- All tests passing (11 tests)
 2026-04-14 18:21:31 -05:00
KeshavAnandCode
3eccd97536 feat: implement HalfKAv2_hm feature extraction (352 features) 
- Implement piece-square feature extraction
- 32 active features for 32 pieces on board
- Tests for feature extraction (7 tests)
- Fix: piece_sq * 6 + piece_type mapping
 2026-04-14 18:11:15 -05:00