Hiarcs 15q Openings Book Includes Ctg And...: Chess

The term CTG stands for ChessBase Tree Generator. It is the proprietary opening book format used by ChessBase GUIs (Fritz, Rybka, Houdini, etc.). Unlike simple PGN collections or EPD files, a CTG book is a binary tree of moves, each weighted by:

You will love this because it stops you from blundering in the first 10 moves. The CTG book's colored indicators (Green = Good, Red = Bad, Blue = Unclear) teach you why certain pawn structures are bad. You will graduate from "hope chess" to "positional chess" just by following the book's trappy sidelines.

For the Competitive Player:

For the Engine Operator:

The Hiarcs 15q Openings Book is a premier chess opening repertoire database, meticulously crafted by the legendary Hiarcs team. Known for powering one of the strongest chess engines in history, Hiarcs has now distilled decades of grandmaster-level opening theory, correspondence chess novelties, and engine-assisted analysis into a single, highly optimized opening book. Chess Hiarcs 15q Openings Book Includes Ctg And...

This package includes the book in multiple formats – most notably .CTG (for ChessBase/Fritz GUI) and .ABK (for Arena/WinBoard) – ensuring compatibility with virtually every major chess interface. Whether you are an online blitz player, a correspondence specialist, an engine user preparing analysis, or a club player looking to sharpen your repertoire, the Hiarcs 15q book delivers immediate, reliable, and aggressive opening guidance.

If you are serious about opening preparation – whether for engine wars, correspondence chess, or online rapid – the Chess Hiarcs 15q Openings Book is a must-have. The inclusion of both .CTG and .ABK formats alone justifies the price (typically $30–$50 USD). It bridges the gap between free, shallow books and expensive professional databases. The term CTG stands for ChessBase Tree Generator

Rating: ★★★★½ (4.7/5)
Best for: Players and engine users who want a practical, high-strength opening book without spending $100+.