Tuesday, 27 September 2016

Study 106

Á. Rusz
Strategems
2016

White wins

1. bxc7 Rc2+ 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# 2. Bc3!! 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 =) 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. Rh8? Rb6+! (or 5... Nc6 6. cxb8=Q+ Nxb8+ 7. Kb6 stalemate) 6. Ka5 (6. Kxb6 stalemate) 6... Ra6+! 7. Kb5 Rb6+ 8. Ka5 Ra6+ perpetual check/stalemate; 5. Rd6? Nf7 6. cxb8=Q+ Kxb8 = 5... Rc8 5... Nf7 6. cxb8=Q+ Kxb8 7. Rg8+ Kc7 8. Rg7 +- 6. Rg8 Rxc7 7. Rxd8+ Rc8 8. Rxc8#

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