[ 4...c7-b6 5.e3-d4 b6-a5 6.c5-b6 a5xc7 7.d4-c5 c7-b6 ( 7...c7-d6 8.e7-d8 d6xb4 9.b2-a3 b4-c3 10.a3-b4 c3xa5 11.h2-g3 a5-b4 12.g7-f8 b4-c3 13.f8-c5 c3-d2 14.c5-d4 d2-e1 15.d4-f2 e1-a5 16.f2-b6 a5xh2 17.d8-c7 h2xb8 x ) 8.b2-d4 b6-a5 9.c5-b6 a5xc7 10.d4-b6 c7xa5 11.e7-d8 a5-b4 12.g7-f8 b4-c3 13.f8-c5 c3-d2 14.h2-g3 d2-e1 15.c5-f2 e1-a5 16.f2-b6 a5xh2 17.d8-c7 h2xb8 x ]