Peter Krug & Mario García

Ganan

2º/3º Premio Ceskolovensnky Schach -2021

1.Nd7+!
1.Ne7+? Ne8+!=
1.Rxe2? d1Q (1…Nf5+? 2.Ke5 d1Q 3.Kxf4+-) 2.Na7+ Kf7 3.Re7+ Kg6=

1…Kf7 2.Ne7!
2.Re7+? Kg6!=

2…Ne8+ 3.Rxe8 Kxe8 4.Ng6+!
4.Nc6+? Kf7 5.Rxe2 d1Q 6.Rg2 Rf6+ 7.Nxf6 Kxf6=

4…Kd8
main 1 : 4…Kf7 5.Nxf4! (5.Rxe2? Rf6+ 6.Kc7 d1Q 7.Nge5+ Kg7 8.Rg2+ Kh8! 9.Nxf6 Qc1+ 10.Kd7 Qc7+ 11.Kxc7= stalemate) 5…e1Q 6.Rf5+ Kg7 7.Rg5+ Kh8 (7…Kh6 8.Rg6+ Kh7 9.Nf6++-) 8.Nf6 d1Q 9.Rg8#

5.Rxe2
5.Nxf4? e1Q!=

5…Rd4 6.Ne7! Switchback
Try : 6.Nf4? d1Q! 7.Rh2 Rxd5+ 8.Nxd5 Qa1! position (x) 9.Nc5 Ke8! 10.Rh7 Qd1! 11.Ne6 Qxd5+ 12.Kxd5 stalemate
or 6.Nf6? Rxd5+ 7.Nxd5 d1Q 8.Ra2 Qc1!=

6…Rxd5+ 7.Nxd5 d1Q 8.Ra2!
8.Rg2? Qh5 9.N7f6 Qf7!=
8.Rb2? Qc1!=; 8.Rh2? Qa1!= position (x)

8…Qc1 9.Ra8+!
Try : 9.Nc5? Qh6+! 10.Ne6+ Kc8 11.Rb2 Qh7! 12.Nb6+ Kb7 13.Nd7+ (13.Nc5+ Ka7 14.Nbd7 Qg6+ 15.Kc7 Qg3+ 16.Kc8 Qg8+÷) 13…Ka6 14.Nec5+ Ka5 15.Nb7+ Ka6 16.Kc7 Qg7!=

9…Qc8 10.Ra7!
10.Nb8? Ke8 11.Nf6+ Kf7!=] 10…Qc1
main 2 : 10…Ke8 11.Ne5! Qb8+ (11…Qd8+ 12.Kc5! Qc8+ 13.Kd4 Qd8 14.Rh7! Qd6 15.Rh8+ Qf8 16.Nc7+ /f6+-) 12.Nc7+ Kf8 (12…Kd8 13.Nc6++- fork) 13.Nd7+- fork

11.Nc5!
11.Nf8? Kc8=

11…Qh6+ 12.Ne6+ Kc8
12…Ke8 13.Re7#

13.Ne7+ Kb8 14.Nc6+ Kc8 15.Rc7#

Themes : Domination- Culmination in mate – Elimination of the threat of stalemate