Voir : 12 24 Tous A36u - Symmetrical, Botvinnik, 5…d6 6.Nge2 Nf6 (1) A36v - Symmetrical, Botvinnik System, 5…d6, 7.O-O O-O (1) A36w - Symmetrical, Botvinnik System, 5…d6, 8.d3 (6) A36y - Symmetrical, Botvinnik System, 5…d6, 8.d3 Ne8 (3) A36z - Symmetrical, Botvinnik System, 5…d6, 8.d3 a6 (10)
