Peter S. Krug & Mario G. García

Win

1º Prize -8th Tournament International Internet (UAPA) -2018/19

wKg7,Qa5,Nb4,Pd5,f4/bKe8,Qb8,Bg4,Pc7,d7,e3,h6

1.f5!
1.Qa3? c5! 2.Qxe3+ Kd8 3.Qxc5 Qxf4 4.d6 Qg5+=

1…Bxf5 2.d6!
2.Qc5? d6 3.Qxe3+ Kd7 4.Qf4 Bh3 5.Qf7+ Kc8 6.Qe8+ Kb7=

2…Be6
main 2…c6 3.Qe5+! Kd8 4.Na6! Qb6 (4…Qa7 5.Nc5+-) 5.Nc7 Kc8 6.Qe8+ Kb7 7.Qa8# mate with block of black queen in b6

main 2…Qb7 3.Nd5 (3.Qxf5? Qg2+! 4.Kh7 cxd6=) 3…cxd6 (3…Qb2+ 4.Nf6++-) 4.Qc3 Kd8 (4…Qxd5 5.Qc8+ Ke7 6.Qf8+ Ke6 7.Qf6# /e8++) 5.Qf6+ Kc8 6.Qf8# mate with block of black queen in b7

main 2…Kd8 3.Nd5 Qb2+ (3…Kc8 4.Qc3! c6 5.Ne7+ Kb7 6.Nxf5 Qe8 (6…e2 7.Qb2+ Ka7 8.Qxe2+-) 7.Nxe3 Qe4 8.Qc5+-) 4.Nc3 Qg2+ 5.Kf8 Qc6 6.Nb5 e2 7.dxc7+ Kc8 8.Na7+- fork

3.dxc7 Qb7
3…Qc8 4.Qb6 d6 5.Kf6 Qd7 6.Qb8+ Qc8 7.Nd5 e2 8.Qb5+ Bd7 9.Qxe2+-

4.Nd5!
4.Qh5+? Ke7 5.Qe5 Qg2+ 6.Kh7 Qg8+=

4…Bxd5 5.Qxd5 with

a) 5…Qxc7 6.Qf7+ Kd8 7.Qf8# mate with block of black queen in c7

b) 5….Qxd5 6.c8Q+ Ke7 7.Qf8+ Ke6 8.Qf6# mate with block of black queen in d5