Game features
- Play the against computer opponent.
- 16 preset difficultly levels, or specify custom settings using combinations of Move Time, Maximum Search Depth, and Pondering.
- Graphical chess board.
- Helpful high-lighting of legal chess moves, when clicking on a piece.
- Real-time chess clocks.
- Move history displayed.
- Undo/Redo moves.
- Load/Save chess games during play.
- Replay your saved games.
- Paste FEN positions from the clipboard.
- See real-time computer thinking.
- See post-analysis tree of all moves considered by computer.
- Stalemate and three-move-repetition detection.
- Flip board to play from black or white’s perspective.
Chess engine features
- WinBoard compatible.
- Alpha-Beta search with Pricipal-variation (PVS).
- Quiescience Search.
- Iterative Deepening.
- Hashtable (transition table) using Zobrist Keys. (Separate King-Pawn & In-Check hashtables).
- Adaptive Null-Nove Forward Pruning.
- 0x88 board representation.
- Move ordering using Hash table, MVV/LVA, SEE, 2-slot Killer-Move, History Heuristic.
- Search Extensions (Check Evasion, Single response, Pawn push to 7th rank, Re-capture of same-value piece).
- Quiescence Search (Re-Capture, Pawn-promotion, Enprise piece, pieces attacked by pieces of lower value).
- Pondering (thinking during opponent’s time).
- “n moves in x minutes” Move time-allocation algorithm.
- Opening book containing over 1300 varied opening positions.
Programming features
A well-designed, and hopefully easy-to-understand, object-model that will enable other developers to quickly get involved in the project.