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| Mikhail Marandyuk, Neue Zürcher Zeitung, 2006. Código FEN: b4K2/3B1P2/p2PpRp1/2N1P1rp/1PpkpBp1/2N2n2/1P1P4/8 w - - 0 1. |
As Brancas jogam e dão xeque-mate em 3 lances!
(White to play and give checkmate in 3 moves!)
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| Foto: Buktolerance.com.ua. |
Nascido em 17 de janeiro de 1949, Mikhail Nasarovitch Marandyuk é um excelente compositor de problemas e grande-mestre de xadrez ucraniano. Ele foi Campeão Mundial em composição de xadrez em seções de mates diretos, muitas vezes. Feliz aniversário!
(Born on 17 January 1949, Mikhail Nasarovitch Marandyuk is a Ukrainian excellent chess problem composer and Grandmaster. He has been World Champion in chess composition in direct mate sections, many times. Happy birthday!)
PCFilho
I haven't solved it yet, but I have identified the following set variations:
ResponderExcluir1 ... Rxe5/Nxe5 2 Be3#
1 ... Bd5 2 Ne2#
1 ... Bc6 2 Ne2+ Kd5 3 Bxe6#
(Interestingly enough, the black move at the beginning of each of these is a self-block.)
I believe you are almost solving it, Jake. :)
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ResponderExcluirI think I have it now, Paulo.
ResponderExcluirThe key is the square-clearing 1 Kg8!, threatening 2 f8(N), which threatens 3 Nfe6 with the variations 2 ... Rxe5 3 Be3 and 2 ... Bd5 3 Ne2. The full-length variations feature distant self-blocks: 1 ... Rf5 2 Be3+ Kxe5 3 Rxe6; and 1 ... Bc6 2 Ne2+ Kd5 3 Bxe6. There are two short mating lines, and the self-block also presents itself here: 1 ... Rxe5 2 Be3#; and 1 ... Bd5 2 Ne2#.
In addition to the self-blocks, there is also an "avoidance of self-injury" theme here, in which any king move makes the same threat as the key, but only the key works: 1 Ke7/Kg7? Nh4! [2 f8(N)? Nf5+!]; 1 Ke8? Bc6! (pins the d7-bishop and thus disables Bxe6).
Quite a nice puzzle, and a highly unified one at that.
There are also the variations 1 ... Nxd2 2 Bxe6 ~ 3 Ne2; and 1 ... Ng1 2 Rxe6 ~ 3 Be3.
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