Voir : 12 24 Tous A40p - 1…e6 2.c4 Bb4+ - Keres Defence (18) A40q - 1…e6 2.c4 Bb4+ 3.Bd2 Bxd2+ 4.Qxd2 b6 5.Nc3 Bb7 6.e4 Nh6 - Keres Defence Kangaroo Variation (14) A40r - 1…e6 2.c4 Bb4+ 3.Bd2 a5 - Keres Defence (14)
