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| Autor desconhecido. Código FEN: 8/8/3B2p1/5N2/1P6/1B1K2P1/3Pp1pp/4kbrr w - - 0 1. |
A posição acima, que encontrei nos arquivos de uma antiga lista de xadrez, é um dos problemas mais difíceis que já resolvi. Pelo posicionamento das peças, me parece uma composição de Josef Halumbirek, mas o autor não estava especificado. As Brancas jogam e dão xeque-mate em 9 lances!
(The position above, which I found in the archives of an old chess list, is one of the most difficult problems I have ever solved. Due to the position of the pieces, it seems to me a composition by Josef Halumbirek, but the author was not specified. White to play and give checkmate in 9 moves!)
PCFilho
I had help from Stockfish on this one. Short continuations are ignored.
ResponderExcluir1 Bc5! gxf5 2 Ba4 f4 3 g4 f3 4 Be7 f2 5 Kc4 Kxd2 6 Bg5+ Kc1 7 Kb3 Kd1 8 Kc3+ Ke1 9 Bd2
That's it, Jake. Did Stockfish find it fast? The engines I have tested needed more than 30 minutes to solve it.
ExcluirStockfish didn't find the key for me. I guessed that 1 Bc5 solved it, but couldn't see the whole solution after that point, so I enlisted the help of Stockfish. It did take a while, but I ran Popeye just for fun afterwards, and that took a lot longer.
ResponderExcluirWhat I meant by "Stockfish didn't find the key for me" is "I didn't use Stockfish to find the key".
ExcluirDid you notice that the solution contains an Indian maneuver?
ResponderExcluir