Problème de la veille

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Bruno's Chess Problem: 26/01/2020

L.Salai, 1er Pr., Martin-Zilina, 1997

Mat en 2 (***)
chess problem diagram

Les blancs jouent

Astuce :

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1. Rb4! ... 2. Be4#
  1... Bb1 2. Bb3#
  1... Rxc2 2. Qe4#
  1... Rxf4+ 2. Nxf4#
  1... Qb1 2. e4#
  1... Qxe3 2. Nxe3#

2020-01-26 11:34:17, by slowbut2: re 2020-01-26 11:30:48, by slowbut2 - :-)
2020-01-26 11:30:48, by slowbut2: 2020-01-26 09:28:57, by problemist
"The try 1. Bb4?"
2020-01-26 11:30:05, by slowbut2: before my seeing comments: My solution [arrived to through the 32-pixel, B&W, restartable-moving-pieces setting]: in view of the possibility\s: bishop mate\ , to mate with queen from southeast after south black-rook defense [or mate with queen\ knight\ bishop\ rook ] , white's rbfour starts
2020-01-26 09:28:57, by problemist: The try 1. Bb4? (threatening a promotion on d8) has several variations, but ultimately fails to 1.. Rxb6! The key is instead the R-move to b4 with the threat 2. Be4# and the variations 1.. Bb1, Qb1, Qxe3, Rxf4, Rxc2 2. Bb3#, e4#, Nxe3#, Nxf4#, Qe4#.

Ladislav Salai Sr. (* 19.8.1934 in Lučenec, † 25.3.2006) Slovak composer. "He was an orthodox and fairy composer. He invented the fairy condition SAT which is described in details by Juraj Lörinc on his website and he was the editor of the magazine 'Umenie 64'." (From chesscomposers.blogspot.com)
"More than half of his output of around 700 compositions consisted of 2-movers, and he won some 130 tourney honours. He was very active as an editor (of 'Mat-Pat' 1983-96 and 'Umenie 64', 1996-2006), as a tourney judge and as a writer of numerous articles. He was the inventor of the fairy form SAT, of which he composed around 100 examples." (From his obituary in "The Problemist," May 2006)
His son Ladislav Salai Jr. (* 18.1.1961 in Zvolen) is Grandmaster in both composition and solving and a "renowned composer of cyclic problems."

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