[ 1...b6-c5 2.f8xb4 a7-b6 3.b4-a5 b6-c5 4.a5-b6 c5xa7 5.a3-b4 a7-b6 6.b4-a5 b6-c5 7.a5-b6 c5xa7 8.e1-f2 a7-b6 9.e5-g3 b6-c5 10.c3-d4 c5-b4 11.b2-c3 b4xh2 12.d4-e3 h2-g1 13.b8-h2 x ]