[ 1...h8-g7 2.c3-d4 a7-b6 3.e1-d2 b6-c5! ( 3...d6-c5? 4.d2-c3 d8-e7 5.h2-g3 c7-d6 6.e5xc7 b6xd8 7.d4xb6 a5xc7 8.c3-d4! e7-d6 9.a3-b4 c7-b6 10.d4-c5 b6xd4 11.e3xe7 g5xe3 12.f2xd4 h4xf2 13.g1xe3 d8xf6 14.e3-f4 f6-g5 15.b4-c5 g5xe3 16.d4xf2 g7-f6 17.c5-d6 h6-g5 houve uma posicao do etude e razoavel 18.f2-e3! g5-h4 19.d6-c7 h4-g3 20.e3-f4! ) 4.d4xb6 a5-b4 5.a3xe7 d8xd4 6.b6xd8 g7-f6 = ]

[ 2.c3-d4 d6-c5 3.f2-g3 alem disso reduz a opcoes ????? 1860 ]