feat: implement PEXT bitboards for sliding piece move gen - #112
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Also added placeholder notes for where we could introduce the PEXT instructions for move generation
Trying to abstract getting sliding piece attacks so we can easily switch between implementations depending on the platform the code is running on.
Created a new sliding piece attack struct that will handle only sliding piece attacks. This way we can abstract the backend method used to generate these attack tables and look them up. bench: 2517656
Fixed sliding piece move gen when using PEXT tables
Moved more tests around and fixed up some code.
bench: 2517656
Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #112 +/- ##
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+ Coverage 83.66% 83.89% +0.22%
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Files 49 51 +2
Lines 7182 7346 +164
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+ Hits 6009 6163 +154
- Misses 1173 1183 +10 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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ptsouchlos
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Nov 5, 2025
Elo | 0.11 +- 2.25 (95%) SPRT | 8.0+0.08s Threads=1 Hash=16MB LLR | 2.95 (-2.94, 2.94) [-5.00, 0.00] Games | N: 26428 W: 4392 L: 4384 D: 17652 Penta | [266, 2738, 7210, 2722, 278] https://pyronomy.pythonanywhere.com/test/3221/ bench: 2517656
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Implemented PEXT bitboards for sliding piece move gen as an alternative to the existing "magic" number based sliding piece move gen.
Fixes #109
bench: 2517656