SharpChess in C#

Peter Hughes
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Article

Description:

SharpChess (http://www.sharpchess.com) is a computer application that enables you to play chess against the computer. It plays a challenging, tactical and, I'm told, "fun" game of chess.

Overview:

Game features

Play the against computer opponent
Graphical chess board
Helpful high-lighting of legal chess moves, when clicking on a piece
Real-time chess clocks
Move history displayed
Load/Save chess games during play
Undo/Redo moves
See real-time computer thinking
See post-analysis tree of all moves considered by computer
Stalemate and 3-move repetition detection

Chess engine features

Alpha-Beta search with Pricipal-variation (PVS)
Iterative Deepening
Hashtable (transition table) using Zobrist Keys. (Separate Pawn & Check hashtables)
Null-move forward pruning (verified and non-verified)
0x88 board representation
Move ordering using Hash table and History Heuristic
Quiescience Search (MVV/LVA and SEE)
Search Extensions (Check, Re-Capture, Pawn-promotion)
Futility pruning (Standard & Extended)
"n moves in x minutes" Move time-allocation algorithm

Programming features

A well-designed, and hopefully easy-to-understand, object-model that will enable other developers to quickly get involved in the project.

Object Model