Book excerpt: This comprehensive backgammon supercharges intermediate players with powerful concepts used by professional money players and champions! Readers learn everything from the general principles underlying expert play to advanced concepts like back play, holding games and one man back. Advanced strategic chapters cover connectivity, priming games, containment games, breaking anchor, action doubles, late game blitzes, post-blitz turnaround, ace point games, the concepts of profitable doubles and much more in the 31 hard-hitting chapters. With the help of hundreds of game-action diagrams 501 Essential Problems transform readers into thinking, aggressive pro-level players. A must-buy for every serious backgammon player!