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Stockfish 17061704_costalba - new version!

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Stockfish, chess engine UCI
Leader rating list JCER = 3372
🔬 Author: Marco Costalba 

More:
Timestamp: 1497666824 

Better naming in endgame code 
And small clean-up of magic bitboards code. 

No functional change. 
Closes #1138 
 
⭐⭐⭐   Stockfish 17061704_costalba - download

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