Weiawaga

A UCI chess engine written in Java.

I have been ported to Rust, and a more recent version of my code can be found HERE.

https://lichess.org/@/Weiawaga

Features

• Board representation
  • Bitboards
• Move generation
  • Magic bitboard hashing
• Search
  • Negamax with alpha beta pruning
  • Iterative deepening
  • Quiescence search
  • Aspiration windows
  • Null move pruning
  • Check extensions
• Evaluation
  • Material imbalance
  • Piece square tables
  • Pawn structure
  • King safety
  • Bishop pairs
  • Evaluation tapering
  • Mobility
  • Rooks on open file
• Move ordering
  • Hash move
  • MVV/LVA
  • Killer heuristic
  • History heuristic
• Other
  • Zobrist hashing / Transposition table
  • Logistic Regression via Texel's Tuning Method

Move generation inspired by surge.