HIARCS Chess Software

HIARCS Chess Engine releases for Apple Mac

The latest engines are available with HIARCS Chess Explorer Pro. Deep engines are available in the Deep and Premium editions. Please click to read about the detailed HIARCS 15 UCI options

The following HIARCS chess engines have been released over the years:

2024 Deep HIARCS 15.3.1 (H15.3)

  • HIARCS 15.3.1 50 Elo improvement over H15
  • H15.3.1 released with HCE Pro v1.3.1 March 2023
  • Improved positional play and search
  • Much deeper analysis depth of pv lines
  • Improved position learning (not in 15.3)
  • Improved handicap levels in game play
  • New 2024 internal engine book

2023 Deep HIARCS 15.2

  • HIARCS 15.2 40 Elo improvement over H15
  • Improved positional play
  • Improved Set Elo simulation accuracy
  • Fortress detection in analysis for Premium customers
  • New 2023 internal engine opening book
  • Released in HCE Pro v1.2.1 in August 2023

2022 Deep HIARCS 15.1

  • HIARCS 15.1 10 Elo increase over H15
  • HIARCS 15.1 chess engine, 10 Elo stronger than H15
  • Improved search, eval and multi-core support
  • Larger hash tables and CPU threads Premium customers
  • Enhanced internal engine opening book
  • Released in HCE Pro v1.1 in May 2022

2022 Deep HIARCS 15 released

  • HIARCS 15 250 Elo increase over H14.
  • HIARCS 15 est. Elo Rating: 3250 (A1.2GHz)
  • Deep HIARCS 15 est. Elo Rating: 3400 (1800X 3.6GHz)
  • Huge improvements to search and evaluation
  • New 2022 internal tournament engine opening book
  • Released in HCE Pro v1.0 in January 2022

2012-2022 Deep HIARCS 14 WCSC

  • HIARCS 14 World Chess Software Champion
  • HIARCS 14 SSDF Rating: Elo 3099 (Athlon 1.2GHz)
  • Deep HIARCS 14 SSDF Rating: Elo 3218 (1800X 3.6GHz)
  • Widespread improvements to search and evaluation
  • H14 available in HIARCS Chess Explorer
  • Released in classic HCE v1 - v1.12 2012-2022

2009 Deep HIARCS 13

  • Released as Deep Sigma Chess Pro HIARCS 13 by ACC
  • HIARCS 13.1 SSDF Rating: Elo 3099 (Q6600 2.4GHz)
  • P.Fritz 4 Hiarcs 13 SSDF Rating: 2771 (PXA255 500MHz)
  • Palm Hiarcs 13.1 Tungsten SSDF Rating: Elo 2651 (T5 416MHz)
  • HIARCS 13.2 SSDF Rating: ELo 3096 (Q6600 2.4GHz)
  • Revelation Hiarcs 13.3 SSDF Rating: Elo 2771 (PXA225 500Mhz)
  • HIARCS 13 series scored over 2900 Elo on handheld devices

2008 Deep HIARCS 12

  • Released as Deep Sigma Chess Pro HIARCS 12 by ACC
  • HIARCS X (12) World Computer Chess Champion
  • P.Fritz 3 Hiarcs 12 SSDF Rating: 2706 (PXA310 624 MHz)
  • Deep HIARCS 12 SSDF Rating: Elo 3018 (Q6600 2.4GHz)
  • Palm Hiarcs 12.1 Tungsten SSDF Rating: Elo 2643 (T5 416MHz)
  • HIARCS 12 was the first version on both Pocket PC and Palm as well as PC and Mac

2006 Deep HIARCS 11

  • Released as Deep Sigma Chess Pro HIARCS 11 by ACC
  • HIARCS 11.1 SSDF Rating: Elo 2876 (Athlon 1.2GHz)
  • HIARCS 11 was the first multi-core/processor version

2005 HIARCS 10

  • Released as Sigma Chess Pro HIARCS 10 by ACC
  • HIARCS 10 SSDF Rating: Elo 2835 (Athlon 1.2GHz)
  • HIARCS 10 tops SSDF rating list

2003 HIARCS 9

  • Released as Sigma Chess Pro HIARCS 9.6 by Applied Computer Concepts
  • HIARCS 9 SSDF Rating: Elo 2738 (Athlon 1.2GHz)
  • Palm HIARCS 9.5a/9.6 SSDF Rating: Elo 2392 (TungstenE 126 MHz)
  • HIARCS returns to the Apple Macintosh platform

2002 HIARCS 8

  • HIARCS 8 SSDF Rating: Elo 2681 (Athlon 1.2GHz)
  • HIARCS 8 marked HIARCS' return when it defeated GM Boris Gulko in an internet match
  • HIARCS 8 Bareev drew a match with super GM Evgeny Bareev at tournament timecontrol on single 2Ghz PC

1999 HIARCS 7.32

  • HIARCS 7.32 SSDF Rating: Elo 2539 (K6-2 450MHz)
  • HIARCS 7.32 was the first commercial chess program to use Nalimov tablebases in its search

1998 HIARCS 7

  • Released as HIARCS 7 by Applied Computer Concepts.
  • HIARCS 7 SSDF Rating: Elo 2465 (64MB P200 Mhz MMX)
  • HIARCS 7.01 SSDF Rating: Elo 2525 (K6-2 450 MHz)
  • HIARCS 7 led the SSDF rating list

1997 HIARCS 6

  • Released as HIARCS 6 by Applied Computer Concepts.
  • HIARCS 6 tops SSDF rating list: Elo 2423 (49MB P200 MHz MMX)
  • HIARCS 6 was the first PC chess program to defeat a FIDE International Master in a match at tournament time controls. It also lead the SSDF rating list for almost a year and was used extensively by Garry Kasparov and in his preparations for Deep Blue. HIARCS 6 also took the Mac by storm with a native PowerPC version

1996 HIARCS 5

  • Released as HIARCS 5 by Applied Computer Concepts.
  • HIARCS 5 SSDF Rating: Elo 2330 (Pentium 90 MHz)
  • HIARCS 5 led the SSDF Rating list

1995 HIARCS 4

  • Released as HIARCS 4 by Applied Computer Concepts.
  • HIARCS 4 SSDF Rating: Elo 2292 (Pentium 90 MHz)
  • HIARCS 4 was the first professional chess program the Apple Mac