What you are currently using (ChessBase, Fritz, Arena, LucasChess)? Which engine you plan to pair with this book?
We tested the (CTG repack) against four popular opening books: Perfect 2024 , Donninger , and Sedat’s Opening Book . The conditions: 10-minute rapid, using the Hiarcs 15q engine on a 16-core Threadripper.
HIARCS 15Q is a chess engine developed by Norbert Schreders, a German chess programmer. It is considered one of the strongest chess engines in the world, with a rating of over 3300 ELO. HIARCS 15Q is known for its exceptional playing style, which combines strategic and tactical skills. chess hiarcs 15q openings book includes ctg and repack
For the purposes of this guide, we will focus on the of the software as described, not its legality. The official path is always to purchase the product from the HIARCS website, which provides access to the latest engines, updates, and official support. For users who choose to explore repacks, it is recommended to do so with caution, ideally in a controlled environment.
If you are serious about chess openings, you have likely heard of the . With the release of Hiarcs 15q , the bar has been raised once again. However, what truly sets this iteration apart isn't just the engine—it is the bundled opening book . What you are currently using (ChessBase, Fritz, Arena,
Because the HIARCS 15q book is available in CTG format, users can easily integrate the book into their favorite analysis GUI, such as HIARCS Chess Explorer Pro or Fritz, enabling seamless analysis of opening theory.
The book is specifically tuned to keep chess engines out of early tactical traps and guide them into positions where their middlegame calculation can shine. The conditions: 10-minute rapid, using the Hiarcs 15q
: HIARCS' proprietary format, optimized for the HIARCS Chess Explorer (HCE) and the HIARCS engine itself. HBG : Specifically used for HIARCS apps on iPhone and iPad . The Grandmaster’s Edge: A Story of Preparation
Whether you are using this for or engine vs. engine matches .
The is an indispensable asset for correspondence chess players, titled professionals, and serious amateur analysts. By packing millions of elite, grandmaster-level positions into a streamlined, lightning-fast CTG format, it bridges the gap between raw hardware calculation and refined strategic wisdom. Implementing this repack into your daily workflow ensures your opening prep remains bulletproof, sophisticated, and always one step ahead of the competition. AI responses may include mistakes. Learn more