Problème d'il y a 8 jours

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Bruno's Chess Problem: 07/10/2025

V.Melnicenko, Valentin RU, 1985

Mat en 2(**)
chess problem diagram

Les blancs jouent

Astuce :

La solution du problème de mat du jour est disponible à partir du lendemain.

1. Qd1! ... 2. Nc7#
  1... Be5, Bxd4 2. Rc5#
  1... Rxd4 2. c4#
  1... Nd3 2. Qxh1#

2025-10-07 12:58:08, by problemist: There is a typo in the diagram of No. 1156 as bBa1 is missing (corrected in yacpdb).
2025-10-07 11:19:44, by problemist: The original version is reprinted as No. 1156 in Преследование темы, with the source 11th USSR Team Championship, 1982, 5th Place. It is a nice exercise in composing to figure out the differences between both versions and the merits of the Album version.
2025-10-07 09:08:30, by problemist: "Since I doubt, I think; since I think, I exist."
Dennis E. Taylor "We Are Legion (We Are Bob)," 2016.

11th USSR Championship, 1983. FIDE Album (4+3+3 = 10 points). This is the Album version from 1985, for the original from 1983 see yacpdb. Shown are changed mates on captures on d4. In the set 1… Bxd4 2. Nf4#. There are tries with a double threat that fail to a suitable capture on d4: 1. Qg4? (2. Nc7#, Rc5#) Bxd4! and 1. c3? (2. Nc7#, Nf4#) Rxd4! On 1. Qe2? (2. Rc5#) Bxd4 2. Nc7#, but 1.. Nd3! refutes. In the solution 1. Qd1 (2. Nc7#) Bxd4 2. Rc5# a LeGrand (reciprocal change of threat and mate for the same black defense) w.r.t. the previous try. On the further refutations from the tries 1.. Rxd4, Nd3 the new mates 2. c4#, Qxh1# appear. Comment from yacpdb : "2-я тема двухходового раздела : В попытке грозит не менее двух матов, в решении - только один из них, а остальные проходят на защиты черных."

Вikтор Олекса́ндрович Мельниче́нко (* 5.8.1939 in Mykolaivka, † 11.2.2009 in Kotovsk) Ukrainian composer and International Master. See wikipedia lv, ru, uk. "Viktor Melnichenko published his first problem in 1957 and was a direct mate composer. He was also an International Judge, several times champion of Ukraine and once champion of the USSR. He also wrote several books about chess composition."

Валентин Федорович Руденко (* 19.2.1938 in Yenakiieve, † 2.4.2016) Ukrainian composer and Super-Grandmaster, see wikipedia de, fr, it, lv, ru, uk. "Valentin Fedorovich Rudenko was a world-famous composer (no. 4 in the FIDE-Album top of composers with more than 200 points) considered by some as the best orthodox problem composer. He was also the author of one of the best chess problem composition books ever written "Преследование темы.— Москва, 1983." He proposed the date of January 4th as International Day of Chess Composition. His problems reached space levels when his threemover of Suomen Shakki 1957, 1st prize, was aboard the mission SOYUZ 9 (it is now on display in a museum in Cheboksary)." By profession he was a leading engineer in the Soviet (and later Russian) space program.

A recent selection of problems of both composers with ample commentary appeared in "Phénix" 352-353, Mars-Avril 2024, pp. 13682-13685, pp. 13717-13718 in "32 Compositeurs ukrainiens et 32 années d'indépendance pour un univers de 64 cases" by Gérard Doukhan, Alain Pallier, Michel Caillaud, and Laurent Riguet.

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