Study 86

Árpád Rusz
3rd UAPA Ty
2015

White wins

1. Bg2!! Qxd3+ 1... Nxf4 2. Rxa6+ Kb8 3. Rcb6+ Kc8 (3... Kc7 4. Rb7+ Kc8 5. Ra8#) 4. Ra8+ Kc7 5. Rb7#; 1... Qb7 2. Rxb7 Kxb7 3. Nc5+ Kb8 4. Nd7+ +- 2. Rc2+! 2. Ka1? Qf1+! 3. Bxf1 Nxf4 = 2...Ka7 3. Rb7+ Ka8

White wins by a complex windmill mechanism:
4. Rf7+ Kb8 5. Rxf8+ Ka7 6. Ra8+ Kb6 7. Rb8+ Ka7 8. Rb7+ Ka8

9. Rg7+ Kb8 10. Rxg8+ Ka7 11. Ra8+ Kb6 12. Rb8+ Ka7 13. Rb7+ Ka8

14. Rh7+ Kb8 15. Rxh8+ Ka7 16. Ra8+ Kb6 17. Rb8+ Ka7 18. Rb7+ Ka8

19. Kc1! Qxc2+ 20. Kxc2 d3+! 21. Kc3! 21. Kxd3? Nxf4+ -+ 21... a2 21... Nxf4 22. Bf3 Nd5+ 23. Bxd5 exd5 24. Rg7 +- 22. Rb5+! Ka7 23. Ra5 Nxf4 24. Bf3! e2 25. Kd2 +-

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