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Full Description: A basic chess app for Macintosh OSX, with nice graphics and a built-in FEN Viewer. Uses a classic Shannon type MiniMax search with Quiescence extensions and Alpha-Beta pruning. It supports Fischer games, copy/paste of FEN positions, and SAN Notation. Cool Audio and Visual Brain features let you listen and see as it evaluates moves. Load and Save games, with unlimited Undo/Redo. The opening book includes over 10,000 moves from the ECO (Encyclopedia of Chess Openings). Runs at about 1500 ELO. Comes complete with FutureBasic 5 source code.
System Requirements: Mac OSX 10.5+ PPC or Intel
Fixes/Changes: (this can be used for new file versions to show what changed) New in version 1.8: - Added Hash Tables and Iterative Deepening. This should speed searches significantly. - The Opening Book is now bundled and auto-loaded at startup. - Captured pieces are now displayed in the info area. - The evaluation is now more subtle, with many improved evaluation features: - Adjusted the default weights of the knight and bishop, such that the following conditions will occur: i) B > N > 3P; ii) B + N = R + 1.5P; iii) Q + P = 2R. Thus, _bishopWt = 330; _knightWt = 320, as per: Tomasz Michniewski (ChessWiki) - Improved the pawn tropism, added knight tropism, and a bonus for a bishop pair. - It would previously castle into open (bad!) positions. Now it should only castle into a position behind a protecting pawn. - Positional scores have been normalized so as not to exceed material scores. This should help prevent bad trades. - A bug in quiescenceSearch() which was lowering recapture scores was fixed. - You can now load and save FEN with enPassant information. - Clicking a square now shows only legal moves for the piece. Previously, it would show all moves for a piece whether they were legal or not. Author's website: http://home.earthlink.net/~johnrpenner/index-creative.html
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