Not 1. Rxb7?? Nxb7 2. a6 Nd6 3. a7 Nc4+ 4. Kd4 Nb6.1. f5+ Kxf5 2. Rd7, so after 1... Kd7 2. Kf2!! to prevent Bf3. (2. Rxb7?? Nxb7 3. a6 Na5!! 4. a7 (4. bxa5 Kc7 wins for Black) 5... Nc4+!) 2... Bb3 3. Rxb7! Nxb7 4. a6 Nd8 (4... Kc7 5. a7 wins) 5. a7 wins.
Not 1. Rxb7?? Nxb7 2. a6 Nd6 3. a7 Nc4+ 4. Kd4 Nb6.
ReplyDelete1. f5+ Kxf5 2. Rd7, so after 1... Kd7 2. Kf2!! to prevent Bf3. (2. Rxb7?? Nxb7 3. a6 Na5!! 4. a7 (4. bxa5 Kc7 wins for Black) 5... Nc4+!) 2... Bb3 3. Rxb7! Nxb7 4. a6 Nd8 (4... Kc7 5. a7 wins) 5. a7 wins.