Al clásico problema de Mate, agregamos esta vez dos posiciones en las que el GM Hikaru Nakamura encuentra una jugada que lleva a la definición por Mate.
Alexander Pituk (1904-2002). Húngaro eslovaco. Compositor y juez de problemas de ajedrez.
Residió toda su vida en Banská Štiavnica. Nombrado Juez Internacional de Composiciones de Ajedrez y galardonado con el título de Maestro FIDE del Ajedrez de Composición y Maestro Honorario del Ajedrez de Composición. Es autor de 584 composiciones (60 de ellas premiadas).
Parece evidente que una pieza Blanca debe retirarse para dejar su lugar a la pieza que dará mate. Así que la idea salta a la vista. Pero claro, no es tan sencillo, de allí la elegancia en la definición. Fracasan en el intento de dar Mate en Dos todas las jugadas que conllevan la idea temática; excepto una, que permitirá 9 mates distintos.
Mates de Hikaru Nakamura
Hikaru Nakamura, el joven y genial GM norteamericano, que acaba de cumplir 23 años, tiene un atractivo estilo de juego y muchos seguidores. No es infrecuente encontrar en sus partidas bellas combinaciones o contundentes sacrificios.
Creímos que no estaba mal ejercitarnos con un par de definiciones de Hikaru que llevan al mate.
La posición pertenece a la partida Sagalchik, G (2491)-Nakamura, H (2568); 2do Continental Americano, Buenos Aires (9), 2003. (Nakamura tenía 15 años en ese momento.)
Las Negras juegan 1… ____ ! y fuerzan el mate.
Krasenkow,M (2668)-Nakamura,H (2648); Barcelona Casino, Barcelona (2), 2007
Hermosa jugada de Hikaru, tras la cual Kransenkow abandona. Amenaza Mate en 2. Las Blancas pueden dilatarlo, pero será inevitable.
1…. ____ !!
(Basta con encontrar la primera jugada, el que se anime que desarrolle la variante completa, sin motores y la mande o escriba en el comentario con letra blanca)
Solución al Problema Anterior, Mate en 3 (vivo) y a Juegan y Ganan
Sencilla elegancia. Lógica sencillez.
Goldschmeding,C - Mate en 2
1er-2do Premio Die Schwalbe – 1964
Sencilla elegancia. Lógica sencillez. Hemos elegido un problema que es sencillamente elegante y lógicamente sencillo. Al alcance de todos los lectores. Hay 3 amenazas directas de mate que el Negro por ahora evita o controla. Hay varias ideas para concretar esas amenazas, pero sólo una permite y asegura el mate en dos jugadas.
1.Tb6
- -1.Tb7 Cc2! (1...Dxb7? 2.Df1#; 1...Dc4? 2.Cxd6#) 2.Dxc2+ e4 (2...Dd3 3.Dc8#) 3.Df2#;
- -1.Tb5 Da7! (1...Dxb5? 2.Cxd6#;1...Db6? 2.Dc8#) 2.Df4+! ( 2.Dc8+ Dd7 3.Dxd7#;2.Df1+ Df2 3.Dxf2#) 2...exf4 3.Txd5#;
- -1.Dd2 Da7 (1...Db6 2.Dd3+ e4 3.Dxd5#) 2.Dd3+ e4 3.Dxd5#;
- -1.Ch6+ Aunque jaque no puede ser la primera jugada, tampoco consigue el objetivo 1...Txh6 2.Tf8+ Tf6 3.Txf6#]
1...Dxb6
[1...Dc4 2.Cxd6#]
2.Dc8# 1-0
Mate en 3 en Partida Viva.
El Blanco cometió algunos errores y se llegó a la posición del Diagrama. Nada complejo, simplemente hay que liberar dos casillas, una para dar jaque y otra para dar mate. Ambas con una única jugada.
Lejarza,A - Harding,T
PCC Handicap 7273 corr, 1972
Las Negras jugaron
22... Ch3+ 23.Dxh3
(23.Rf1 Tf2#)
23.... Dxh3 24.Rf1 Df2#
Juegan las Blancas y Ganan
Nabaty,T (2485) - Khairullin,I (2617)
EU-Ch - 11th - Men Rijeka (4.28), 09.03.2010
34.Cd5+!!
[34.Tg1 Te1 35.Cd5+ Rd7 (35...cxd5?? 36.Dc3+ doble sobre e1; 35...Rd6?? 36.Dd8+ Rc5 37.Da5+ nuevamente doble) 36.Cf6+ Rc7 37.Cd5+]
34...Rd7
[34...cxd5 35.Dc3+ controla e1, asi que tras 35...Rb8 36.Txf2 ganando; 34...Rd6 35.Dd8+ Td7 36.Df8+ Rxd5 37.Txf2]
35.Dc8+
[35.Dc8+ Rxc8 36.Cxe7+ Rd7 37.Txf2]
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1-Ac8
2-h3 Th6++
3-g4 Af2++
se prolonga mate en 3 defendiendo la casilla con el alfil o dama
2-h3 Th6++
3-g4 Af2++
se prolonga mate en 3 defendiendo la casilla con el alfil o dama
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