Jacob Aagaard is a chess grandmaster and ex-British Champion.

"It is true that the material is not easy: even a GM can’t solve them without some effort. On the other hand, I’ve been solving the exercises [in ‘Attack & Defence’ and ‘Endgame Play’] during 20-minute train trips to work with a pretty good success rate so they are certainly not at the impossible scale of things. My experience is that there is a pretty good mix of easier and harder exercises." -- GM Matthew Sadler, New in Chess

Jacob Aagaard is a chess grandmaster and ex-British Champion.

"It is true that the material is not easy: even a GM can’t solve them without some effort. On the other hand, I’ve been solving the exercises [in ‘Attack & Defence’ and ‘Endgame Play’] during 20-minute train trips to work with a pretty good success rate so they are certainly not at the impossible scale of things. My experience is that there is a pretty good mix of easier and harder exercises." -- GM Matthew Sadler, New in Chess