Nimzo Indian Defense Samisch Variation 5...b6 6.f3 Nc6 7.e4 2 Nimzo Indian Defense Normal Line...5.a3 Bxc3 6.bxc3 d6 2 Nimzo Indian Defense Three Knights Variation 4...O O 5.Bg5 c5 6.Rc1 1 Nimzo Indian Defense Three Knights Duchamp Variation...7.O O Bxc3 8.bxc3 d6 1 Nimzo Indian Defense St Petersburg Variation 5.Bd3 Bb7 6.Ne2 Bxg2 7.Rg1 1 Nimzo Indian Defense St Petersburg Fischer Variation 5...Ne4 1 Nimzo Indian Defense Samisch Variation...6.e3 c5 7.Bd3 Nc6 1 Nimzo Indian Defense Samisch Variation...6.e3 Nc6 7.Bd3 d6 1 Nimzo Indian Defense Samisch Variation 5...d6 1 Nimzo Indian Defense Samisch Variation 5...O O 6.e3 b6 1 Nimzo Indian Defense Leningrad Variation 1 Nimzo Indian Defense Kmoch Variation...5.d5 b5 6.e4 O O 7.e5 1 Nimzo Indian Defense Kmoch Variation...11.O O Bxd3 12.Qxd3 Re8 1 Nimzo Indian Defense Kmoch Variation 4...O O 5.a3 Bxc3 6.bxc3 1 Nimzo Indian Defense Keres Variation...10.O O Ba6 11.f3 Re8 12.Ng3 1 Nimzo Indian Defense Hubner Rubinstein Variation 5...d5 6.a3 1 Nimzo Indian Defense Classical Variation...6.Qxc3 Bb7 7.Bg5 h6 8.Bh4 1 Nimzo Indian Defense Classical Noa Variation 1 Nimzo Indian Defense Classical Berlin Pirc Macieja System 8...Bb7 1 Nimzo Indian Defense Bishop Attack Classical Botvinnik System...8.Bxc4 c5 9.Ne2 Qc7 10.Bd3 1