How often has this comment been appended to a game move or variation? As many players know, it really may not be all that easy to figure out what is meant by this familiar phrase.

After the untimely passing of legendary instructor Mark Dvoretsky, Artur Yusupov was given access to Dvoretsky’s famous card files. With the core material based upon these files, the former top ten grandmaster – and perhaps the most successful of all of Dvoretsky’s students – put together this book, modifying and refining the content as needed.

The book begins with a “theoretical” explanatory section. This is followed by 102 practice positions, which increase in in difficulty. Good technique for gaining an advantage is useful in all areas of the game, so there are positions from the opening, middlegame, and especially the endgame – not only from practical games but also from various studies.

The comments to the solutions are very detailed, explaining not only the main line but also the supplementary side variations. Yusupov thought it important to demonstrate the logic in the search for a decision and to show how a chessplayer can come to the right conclusions at the board.