Chess problem: 6 days ago

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Bruno's Chess Problem: 09/12/2019

E.Visserman, 2nd Pr., Schach-echo, 1975

Mate in 2 (**)
chess problem diagram
White to play

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1. Qh8! ... 2. Qh4#
  1... d4 2. Qh1#
  1... Kd4 2. Rf4#
  
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2019-09-12 18:21:40, by problemist
The twins are generated as follows, the basic position a) is with wKh2. Then b) wKg3 (Bruno's version) c) wBh6 d) wRc6. Curiously, the solutions a) 1. Qe8 b) Qh8 c) Qd8 d) Qb7 seem to work uniquely both if these changes are made only to the starting position or are continued (so that e.g. in c) both the wK is on g3 and the wB on h6 and in d) all three changes are made). Which was the twinning intended by the composer?
2019-09-12 10:27:59, 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: easily missing queen-mate and no-mate queen moves in second move \ queen mate from southeast , to mate with queen after black-pawn move [or to mate from east with east rook\ ], white's qheight starts

2019-09-12 06:02:17, by problemist
This is part of a twin problem with four positions, see yacpdb. Some of the try keys 1. Qd8?, Qb7?, Qe8? solve in another version. There are changed mates on 1.. Kd4, d4 (4x2 Zagoruiko). The key of the present version threatens 2. Qh4# and has 1.. Kd4, d4 2. Rf4# (pin mate), Qh1#. FIDE Album.

Eeltje Visserman (* 24.1.1922 in Blokzijl, 23.3.1978 in Den Haag) Dutch composer, Grandmaster and International Judge, see wikipedia de, fi, it, lv, ru. "E. Visserman was a wonderful composer who deservedly won numerous composing tourneys. He composed problems of all types, but mostly two- and threemovers. He was also the editor of a column in magazines "Tijdschrift van de KNSB" and "Probleemblad". An anthology of his problems was published after his death: "Schaakproblemen van E. Visserman" by Albertus Marinus Koldijk, 1986."

Since the opening in October 2000, I had published online more than 6650 free chess problems. If you want more details, look at my chess figures pages.

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