Here is the fourth and final volume of Lev Psakhis's monumental work on the French Defense, complete with a wealth of illustrative games by leading players and detailed analyses of Black's alternative responses to 3 Nc3. In addition to the Steinitz Variation (3...Nf6 4 e5) and the Classical System (3...Nf6 4 Bg5 Be7), this volume incorporates the Rubinstein, Burn, and MacCutcheon Systems, which have recently gained new popularity.