StrateGems
2016
3rd Prize
White wins
1. bxc7 is followed by two variations:
a. 1...Rc2+ 2. Bc3! unguarded guard
2. Kb6? Rc6+ 3. Kb5 Rxc7 =
2... Rxc3+ 3. Kb6 Rb3+
3... Nf7 4. Rh3! Rxc7 (4... Rxh3 5. c8=Q#) 5. Kxc7 +-
4. Ka6 Rb8! self-fork
4... Ra3+ 5. Kb5 Rb3+ 6. Ka4! (6. Kc4? Rb8 7. Rh8 Rc8 8. Rxd8 Kb7 =) 6... Rb8 7. Rh8 +-
5. Rg6!! mutual zugzwang 5. Rf6? Nc6! 6. Rxc6 (6. cxb8=Q+ Nxb8+ 7. Kb6 Nd7+ =) 6... Rb6+! 7. Kxb6 stalemate 5... Rc8 5... Nf7 6. cxb8=Q+ Kxb8 7. Rg8+ Kc7 8. Rg7 +- 6. Rg8 Rxc7 7. Rxd8+ Rc8 8. Rxc8#
b. 1... Ne6+ 2. Kc6! 2. Kb6? Rd6+ = 2... Rc2+ 2... Nxc7 3. Kxc7 Ka7 4. Bc3 Rd5 5. Rc6 Rb5 6. Bd4+ Ka8 7. Ra6# 3. Kb6 Nf8! 3... Nxc7 4. Rh8+ +-
4. Be5! 4. Rh8? Rb2+! 5. Ka6 (5. Bxb2 stalemate) 5... Ra2+ 6. Kb6 Rb2+! 7. Kc6 Rc2+ 8. Kb6 Rb2+ perpetual check/stalemate 4... Nd7+ 5. Ka6 Ra2+ 5... Nxe5 6. Rh8# 6. Kb5 Kb7 7. Rh8 Rc2
8. Rb8+! Nxb8 9. cxb8=Q#
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Related studies: Study 106a Study 106b Study 106c
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