HIARCS is clearly the strongest chess software for Apple Mac computers. We have combined this engine with the latest high quality Sigma Chess 6.1.4 GUI to produce the strongest and best-featured chess software for the Apple Mac.

This gives Mac owners the strongest chess engine ever and best features for chess play and analysis on both Intel and Power PC (G3/G4/G5) Mac computers with the full world championship strength single and multiprocessor/core chess engines. The HIARCS 11 chess engines can also be used with other good chess GUIs on the Mac like Shredder, Jose and Scatha.

• The new premier HIARCS 11.1 single and multiprocessor chess engine in UCI form
• Clearly the strongest chess program ever sold for Mac computers
• Universal binary supporting all Intel and PowerPC Mac computers
• Suitable for all players from beginner (1250 Elo) to World Championship strength and beyond - 2900 Elo
• strength!
• Can play at any chess standard (1250-2900 Elo) you set in Elo rating points challenging all players
• Unlimited levels and time controls: Casual, Blitz, Active, Fischer and Tournament Tournament book with the latest opening theory for study and preparation
• Nalimov tablebase support of up to 6 pieces for perfect play in the endgame
• New Sigma Chess 6.1.4 Graphical User Interface with new features like MultiPV
• Monitors your play, measures your progress with Elo history graph and statistics
• Sigma Chess now support engine-engine matches and multiPV display!
• Sigma Chess GUI game collections (PGN & EPD) and HTML Web page export
• Sigma Chess high resolution, colour graphics with 2D/3D boards and multiple piece styles

• The new premier HIARCS 11.1 single and multiprocessor chess engine in UCI form
• Universal binary supporting all Intel and PowerPC Mac computers
• 100 Elo stronger than HIARCS 10 on Power PC Macs
• 240 Elo stronger than HIARCS 10 on Intel based Macs Now can reach 2900 Elo on fast hardware - World Champion strength!
• New Tournament book with the latest opening theory for study and preparation
• Nalimov tablebase support of up to 6 pieces for perfect play in the endgame
• New Sigma Chess 6.1.4 Graphical User Interface with new features like MultiPV

• OS X 10.7 compatibility