Collin Moshman's second book on poker follows his excellent work on sitngos, which is probably the primary work for anyone interested in becoming proficient at single or two table sitngos. The topic he has chosen to take this time around is far more complex in this writer's/poker player's opinion--heads up no-limit play. The importance of heads up play is not limited to strategies used by players who do nothing but play cash heads up games, of which there are many, but instead includes both tournament players and cash game ring players, as many if not most hands come down to two players facing off after all the others have folded to a preflop raise. Thus, I recommend that anyone playing no-limit holdem put some time into reading through and understanding the concepts Collin puts forth in this excellent work. what I particularly appreciate is Collin's facility at explaining rather difficult and often mathematics-based concepts so that pretty much anyone can understand and utilize them. Heads up no-limit play is complex enough that there will be some who feel other approaches are superior, but what Collin presents is a thorough look at a fundamentally sound method of playing each street with relevant examples added throughout. If you play no-limit poker, either cash or tourneys and either ring games or short-handed, there's no excuse not to read and even study what's in this book.