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Hiarcs Chess @HiarcsChess

World Championship winning computer chess software for chess database, analysis and play on PC, Mac and iPhone & iPad. Official Account for HIARCS

Joined November 2011
  • Tweets 324
  • Following 64
  • Followers 1,049
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New Human Reference & GM opening books with top over the board and correspondence play to June 2026. Latest theory, play advice and novelties, download top May 2026 games for @HiarcsChess Explorer (Pro). Discover more: hiarcs.com/news.html #chess #book #games #hiarcs
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New Human Reference & GM opening books with top over the board and correspondence play to May 2026. Latest theory, play advice and novelties, download top April 2026 games for HIARCS Chess Explorer (Pro). More: hiarcs.com/news.html
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For X: Happy Easter! New HIARCS Tournament, Human Reference & GM books: top computer, OTB correspondence moves & stats to April 2026. Latest theory, play advice, novelties, download top March 26 games for HIARCS Chess Explorer (Pro). More: hiarcs.com/news.html #Easter
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New HIARCS Human Reference & GM books: all top OTB correspondence moves & stats through to March 2026. Latest theory, play advice, novelties, download Feb 2026 top games for HIARCS Chess Explorer (Pro). More: hiarcs.com/news.html
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New HIARCS Human Reference & GM books: all top OTB correspondence moves & stats through to Feb 2026. See the latest theory, play advice, and download Jan 2025 – Feb 2026 top games for HIARCS Chess Explorer (Pro). More: hiarcs.com/news.html
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New HIARCS Human Reference & GM books: all top OTB correspondence moves & stats through to Jan 2026. See the latest theory, play advice, and download Jan–Dec 2025 top games for HIARCS Chess Explorer (Pro). More: hiarcs.com/news.html
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New HIARCS Human Reference & GM books: all top OTB correspondence moves & stats through to Dec 2025. See the latest theory, play advice, and download Jan–Nov 2025 top games for HIARCS Chess Explorer (Pro). More: hiarcs.com/news.html
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♟️ HIARCS Online Book Access — Nov 2025 update! 127M positions with full stats & play recommendations. Latest Human Ref & GM books include OTB corr games to Nov 2025 Jan–Oct 2025 top games for HCE (Pro) 🔗 hiarcs.com/online-book-acces… #HIARCS #Chess #ChessBook #ChessTheory

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📘 Details: • Human Ref Book – 65M positions | 2.8M variations (from 2.3M games) • GM Book – 30M positions | 1,3M variations (from 1.17M GM games) • CTG Book – 32M positions | 1.9M variations (from 1.82M games) All deeply analysed with fresh play recommendations 🧠♟️ #HIARCS
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New HIARCS Human Reference & GM books: all top OTB correspondence moves & stats through Oct 2025. See the latest theory, play advice, and download Jan–Sep 2025 top games for HIARCS Chess Explorer (Pro). More: hiarcs.com/news.html
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Latest HIARCS Human reference and GM books contain all the moves & stats for games up to September 2025. Subscribers can see the very latest theory, play recommendations and download the top games from Jan-Aug 2025 to enjoy in HCEP hiarcs.com/online-book-acces…
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The new HIARCS Human Reference & GM books are here: packed with the latest OTB & correspondence moves, stats, and play recommendations through Aug 2025. Subscribers get fresh theory, Jan–July 2025 top games, and full access in HIARCS Chess Explorer(Pro) hiarcs.com/online-book-acces…
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July 2025 - 234th update for Online Human Reference, Tournament and GM Books with over 126 million positions. Latest HIARCS Human reference and GM books contain all the moves and stats from over the board and correspondence games up to July 2025. hiarcs.com/online-book-acces…
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Mid June 2025 - Tournament CTG Book update, now 32.6 million positions, 1.9 million variations based on 1.8 million top quality games - all analysed with play recommendations. #HIARCS #Chess #Explorer #Tournament #CTG #Opening #Book #HiarcsChess hiarcs.com/chess-opening-boo…
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June 2025 - 233rd update for Online Human Reference, Tournament and GM Books with over 126 million positions. Latest HIARCS Human reference and GM books contain all the moves and stats from over the board and correspondence games up to June 2025. hiarcs.com/online-book-acces…

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Subscribers can see the very latest theory, play recommendations and download the top games from Jan-May 2025 to enjoy in HIARCS Chess Explorer (Pro).
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May 2025 - 232nd update for Online Human Reference, Tournament and GM Books with over 125 million positions. Latest HIARCS Human reference and GM books contain all the moves and stats from over the board and correspondence games up to May 2025. hiarcs.com/online-book-acces…
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April 2025 - 231st update for Online Human Reference, Tournament and GM Books with over 125 million positions. Latest HIARCS Human reference and GM books contain all the moves and stats from over the board and correspondence games up to April 2025. hiarcs.com/online-book-acces…

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GM top human chess book: 29,401,031 positions/moves, 1,305,874 variations based on 1,138,840 GM human games
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Tournament CTG Book with 32,270,531 positions/moves and 1,894,759 variations based on 1,891,049 top quality games
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