Report a dead link  |  Submit a file  |  Contact  |  About MGF  |  Help Pro login  |  Developer login
Mac Game Files
Mac Games Mac Demos Mac Shareware Mac Updaters Mac Addons Mac Tools
Mac Games Details
Publisher iDoctor
Type Shareware
License GNU/ Free
Version 1.8
Date Added 10/19/2011
Size 2.6 MB
Downloads This Version 2,392
Downloads of All Time 2,842
Mac Games User Reviews
pChess 1.8

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.

Mac Games Fixes and Changes

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:

Mac Games System Requirements

Universal Binary (PPC/Intel)
Mac OSX 10.5+ PPC or Intel

Mac Games Download


Mac Games User Reviews

Mac Games Rating joan devries (10/29/2010 - version 1.0.4)
great chess app for the mac. nice graphics. loads up fast when i want to email a chess move with the built-in FEN viewer.

View All Ratings & Reviews

Mac Games NewsMac Games News
Mac Games StoreMac Games News
this space intentionally left blank
Put Mac Games Files On Your Site
Contact Mac Games Files
About Mac Games Files
Mac Games News
Total Files
Total Bytes
Total D/Ls
1,165.4 Gig
Copyright © 2000-2007, All rights reserved. Privacy Policy. Terms and Conditions. Visits: 68,268,950