The first 300 problems in this book are akin to basic endgames in a modest book. I recommend that you put a check in pencil when you miss in figuring out the problem by the diagram on the first try and lesser marks for more lengthy correct solutions to no marks for 100% solution. Then with review work your way forward erasing marks, or partial erasing for incomplete answers, on review as you get it. The problems gain in difficulty - should you finish the book your endgame ability will be at International Master level. John Nunn's books or endgame CDs then may take you to Grandmaster level - but those are to difficult for most players. Laszlo's comprehensive books show his devotion to chess and its' teaching. My only reservation is like most of Laslo's books they are so large they aren't comfortable lap books.