Think like a grandmaster with this ultimate test of chess skill, drawn from the pages of The Times. Byron Jacobs challenges you to find the critical move that turned the tide or sealed the win. Pit your wits against the likes of Kasparov, Carlsen and other elite players. Can you spot the breakthrough they found?

Whether you're sharpening your tactics or looking for a daily brain workout, this collection of puzzles will train your eye, stretch your mind, and deepen your understanding of the game.

· Aimed at chess players looking to improve their game strategy

· Positions drawn from tournament games between top players

· Commentary on each scenario