Abertura americana

1-1.c3d4-b6c5; 2.d5b6-a7c5x; 3.b2c3-f6g5; 4.c3d4-c5b4; 5.a3c5xd6b4x; 6.a1b2-g5h4; 7.b2a3-c7d6; 8.a3c5xd6b4x; 9.g3f4-d8c7; 10.d2c3-b4d2x; 11.e1c3-e7d6; 12.c1b2-c7b6; 13c3b4?-h4g3!; 14.f2h4xb6c5; 15.d4b6xd6e5!; 16.fad6xh6g5; 17.h4f6xg7a1x.(as pretas vencem)

2-1.c3d4-b6c5; 2.d4b6xa7c5x; 3.b2c3-f6g5; 4.c3d4-c5b4; a3c5xd6b4x; 6.a3b2-b4a3; 7.g3f4-g5h4; d4c5-b8a7; 9.b2c3-g7f6; f4g5-h6f4x; 11.e3g5xc7b6; 12.c3d4-d8c7; 13.d2c3-b6a5?; 14.f2g3!-h4f2x; 15.g1a3xf6h4x; 16.c5b6-a7c5x; 17.d4f6x (as brancas vencem)

3-1.c3d4-b6c5; 2.d4b6xa7c5x; 3b2c3-f6g5; 4.c3d4-c5b4; a3c5xd6b4x; 6.a1b2-b4a3; 7.g3f4-g5h4; 8.d4c5-g7f6; 9.f4g5-h6f4x; 10.e3g5xb8a7; 11.b2c3-f6e5?; 12.h2g3-h4f6x; 13.c5d6-e7c5x; 14.c3d4-c5e3x; 15d2b8x(as brancas vencem)

4-1.c3d4-b6c5; 2.d4b5xa7c5x; 3.b2c3-f6g5; 4.c3d4-c5b4; a3c5xd6b4x; 6.a1b2-b4a3; 7.d4c5-b8a7; 8.b2c3-g5h4; g3f4-g7h6; 10.f4g5-h6f4x; 11.e3g5xc7b6; 12.c3d4-d8c7; 13.d2c3-c7d6; 14.c5e7xf5d8x; 15.g5h6-c7d6; h2g3-h8g7; g1h2?-f8e7; 18.h6f8xd6c5; f8b4xa3g1x(as pretas vencem)

5-1.c3d4-b6c5; 2.d4b6xa7c5x; 3.b2c3-f6g5; 4.c3b4-g5h4; 5.g3f4-g7f6; 6.f4g5-h6f4x; 7.e3g5xb8a7; 8.ab2?-f6e5; 9.g5h6-f8g7; 10.h6f8xh8g7; 11.f8h6xe5f4; 12.h6b6xc7a1x(as brancas vencem)

6-1.c3d4-b6c5; 2.d4b6xa7c5x; 3b2c3-f6g5; 4.g3f4-g7f6; 5.c3b4-h8g7; 6.b4a5-g5h4; a1b2-f6e5; 8.h2g3-b8a7; 9b2c3-h6g5; f4h6xe5d4; 11.c3e5xd6h2x; e3f4-g7f6?; 13.f4g5!-f6e5; 14.f2e3-h4f6x; 15.e3d4-c5e3x; 16.d2b8 (as brancas vencem)

7-1.c3d4-b6c5; 2.d4b6xa7c5x; 3.b2c3-f6g5; 4.g3f4-g7f6; c3b4-h8g7; 6.b4a5-g5h4; a1b2-f6e5; h2g3-b8a7; 9.b2c3-h6g5; 10.f4h6xe5d4; c3e5xd6h2x; e3f4-g7f6?; 13.f4g5!-c5d4; h6g7-f8f4x; 15.d2e3-f4d2x; 16.e1g7x (as brancas vencem)

                                                                           FIM