Hiarcs Chess

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

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlY8nx #chess #book #games #hiarcs

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlY8nx

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlY8nx #Easter

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlY8nx

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlY8nx

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlYGd5

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlY8nx

[Hiarcs Chess @HiarcsChess]

📘 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

[Hiarcs Chess @HiarcsChess]

♟️ 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)
🔗 https://t.co/BfYT63SyXW
#HIARCS #Chess #ChessBook #ChessTheory

[Hiarcs Chess @HiarcsChess]

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: https://t.co/6talwlYGd5

[Hiarcs Chess @HiarcsChess]

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 https://t.co/KSbK6YBBvC

[Hiarcs Chess @HiarcsChess]

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) https://t.co/KSbK6YC9la

[Hiarcs Chess @HiarcsChess]

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. https://t.co/Ob7LtYEkSA

[Hiarcs Chess @HiarcsChess]

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 https://t.co/aegQMuhbk0

[Hiarcs Chess @HiarcsChess]

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).

[Hiarcs Chess @HiarcsChess]

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. https://t.co/Ob7LtYDN32

[Hiarcs Chess @HiarcsChess]

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. https://t.co/Ob7LtYDN32

[Hiarcs Chess @HiarcsChess]

Tournament CTG Book with 32,270,531 positions/moves and 1,894,759 variations based on 1,891,049 top quality games

[Hiarcs Chess @HiarcsChess]

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. https://t.co/Ob7LtYDN32

[Hiarcs Chess @HiarcsChess]

GM++ top human chess book: 29,401,031 positions/moves, 1,305,874 variations based on 1,138,840 GM human games