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| Zinovy Birnov, Moscow Sports Committee Ty, 1938. Código FEN: 6Q1/8/8/7p/7B/1p1p3n/1K4bp/6kq w - - 0 1. |
Este é outro problema interessante. O YACPDB dá uma solução em 20 lances, começando com 1. Qg3. Porém, há um lance-chave melhor, que nos economiza 6 lances: as Brancas jogam e dão xeque-mate em 14 lances!
(This is another interesting problem. YACPDB gives a solution in 20 moves, beginning with 1. Qg3. However, there is a better key move, which saves us 6 moves: White to play and give checkmate in 14 moves!)
PCFilho
This problem is solved by 1 Qg6! (waiting). Black must play 1 ... d2 to avoid a short mating continuation, and after that the play goes like this:
ResponderExcluir2 Qb6+ Kf1 3 Qa6+ Kg1 4 Qa1+ Bf1 (4 ... d1(any) allows a short continuation) 5 Qa7+ Kg2 6 Qb7+ Kg1 7 Qb6+ Kg2 8 Qc6+ Kg1 9 Qc5+ Kg2 10 Qd5+ Kg1 11 Qd4+ Kg2 12 Qe4+ Kg1 13 Qe3+ Kg2 14 Qg3.
Another nice example of the "stairway to mate".
Well done, Jake!! That's it.
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