SILMAN'S COMPLETE ENDGAME COURSE Jeremy Silman
This is an essential book for the improving chess player. The books is based on the idea that chess content must be adapted to chess learners playing strength and understanding.
As you can see in the table of contents bellow, Silman methodically splits in separate levels and strongly encourages the reader to stick to it's own level.
Part One / Endgames for Beginners (Unrated-999)
Part Two / Endgames for Class "E" (1000-1199)
Part Three / Endgames for Class "D" (1200-1399)
Part Four / Endgames for Class "C" (1400-1599)
Part Five / Endgames for Class "B" (1600-1799)
Part Six / Endgames for Class "A" (1800-1999)
Part Seven / Endgames for Experts (2000-2199)
Part Eight / Endgames for Masters (2200-2399)
We do believe this to be a very productive approach to endgame study, but also to chess knowledge as a whole.