Chess problem: 9 days ago
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Bruno's Chess Problem: 01/08/2022
T.Zirkwitz, M.Keller, Schach Report, 1993
Mate in 3(**)White to play
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 1. ... Nd7 2. Bxd5+ Kxd5 3. Qa2# 1. ... c6 2. Rxg7 ... 3. Re7# 1. ... Rd7 2. Rxe5+ Kxe5 3. Qe1# |
- 2022-01-08 11:29:28, by problemist
- There is also a deferred (delayed) Banny theme (Encyclopedia of Chess Problems) to be detected where the keys from the tries [Qa2, Qe1] occur as mates (in the third moves of the solution with inserted second moves of White and Black) after their reversed refutations [Nd7, Rd7] from the first black moves of the tries. This was also shown by the composers in their 1st Prize, Freie Presse, 1992, which was selected for the FIDE Album.
- 2022-01-08 10:22:20, by problemist
- "Mathematical magic combines the beauty of mathematical structure with the entertainment value of a trick." Martin Gardner (1914-2010) "Mathematics, Magic, and Mystery" (1956).
1st Prize, Schach-Report\Deutsche Schachblätter, 1992. FIDE Album (1992-1994) (Annexe). White wants to play 1. Bxd5+ Kxd5 2. Qa2# or 1. Rxe5+ Kxe5 2. Qe1#, but this still fails to a check of bBh3. On 1. Qa2? (2. Bxd5#) Rd7! (this also follows on 1. Qxa5?) as 2. Rxe5+ does not work and 1. Qe1? (2. Rxe5#) Nd7! as 2. Bxd5+ does not work. The key 1. Ra7 creates a new threat 2. Ra6+ and now 1.. Rd7, Nd7 can be answered by 2. Rxe5+, Bxd5+ as the check from bBh3 is blocked. This is the Hannelius theme transferred to a threemover. On 1.. c6 2. RxR 3. Re7#.
Michael Keller (* 31.5.1949 in Remscheid) German composer and Grandmaster, see wikipedia de, it, lv, "is specialized in two- and threemovers.The Keller paradox is a direct mover theme that requests that "White moves to a square just controlled (or controlled again) by Black." Friedrich Chlubna published a collection of Keller's problems "Michael Keller - Ein Meister der Schachkomposition" Vienna, 1994.
Thorsten Zirkwitz (* 26.4.1965, † June 2016) German composer and International Master. "Thorsten Zirkwitz has mostly composed direct mates in collaboration (mainly with Keller) and has obtained many prizes. His personal webpage proposes a collection of his own problems classified by genres and themes, a list of chess problems links. He presents himself and his career as a problemist on his site on the Wayback Machine: his 'home ground' is the threemover. Thorsten Zirkwitz died in the beginning of June 2016."
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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