♟️ King-Fisher Chess Engine

A JavaScript chess implementation featuring an AI opponent powered by Minimax with Alpha-Beta pruning. Utilizes advanced move ordering (history heuristic, killer moves) and position evaluation (material balance, piece-square tables). Includes a responsive web interface with legal move validation, pawn promotion, and game state tracking.

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🌐 Play Online

Try King-Fisher Chess engine: Play Now →

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Gameplay

• Multiple Modes:

  • Human vs Human

  • Human vs AI

• Special Moves:

  • Castling, En Passant, Pawn Promotion

• Game State Detection:

  • Check/Checkmate

  • Stalemate

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Features

Core Engine

• Minimax Algorithm with Alpha-Beta pruning

• Quiescence Search for stable evaluations

• Adaptive Evaluation:

  • Material balance with piece values

  • Piece-Square Tables (middlegame/endgame)

• Move Ordering:

  • History heuristic (player specific)

  • Killer moves (depth + player specific)

  • MVV-LVA capture prioritization

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License

MIT License - See LICENSE for details.