Chess problem: 5 days ago

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Bruno's Chess Problem: 06/20/2022

L.Losinskij, V.Kopaev, 2nd Pr., Suomen Shakki, 1984

Mate in 2(*****)
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1. g8=N! ... 2. Rc4#
  1... dxc6+ 2. Rf7#
  1... d6+ 2. Nd7#
  1... d5+ 2. Qxc7#
  1... Kd6 2. Rd4#
  1... Qd4, Rd4+ 2. Rf5#
  1... Rd5+ 2. Re4#
  1... Rd6+ 2. Nd3#
  
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2022-06-20 18:59:54, by problemist
1+4+3 = 8 points in the FIDE Album, No. 213. Director: Cor Goldschmeding - Nederland. Judges: Stefan Dittrich - Deutschland, Viktor Meljničenko - SSSR, Claude Wiedenhoff - France.
2022-06-20 06:41:23, by problemist
"I know thee not, old man: fall to thy prayers; \ How ill white hairs become a fool and jester!" William Shakespeare (1564-1616), "King Henry IV, Part II" act V, sc. v, l. 52.

2nd HM. FIDE Album. A posthumous work by Loshinsky. The problem and its variants are amply discussed by Geoff Foster in his article "A Cross-Check Matrix", The Problemist Supplement, September 2010, p. 93, No. III (available online): "In III the key is 1.g8=S!, threatening 2.Rc4, with similar variations as in the previous problem: 1…Rd6+ 2.Sd3; 1…Rd5+ 2.Re4; 1…Rd4+ 2.Rf5; 1…d6+ 2.Sd7; 1…Kd6 2.Rd4. In addition the black pawn\rook battery gives two more checks: 1…dxc6+ opens the wRd8’s line to d4, allowing 2.Rf7, while 1…d5+ interferes with the bRd3, leading to mate by 2.Qxc7. The two new black checks more than compensate for the loss of the 2.Se4 mate, which cannot be retained because not only could the bPd7 interpose on d5, but also a third white bishop would be required on a7 or b6 (to guard d4). The key is a promotion, which is not good, but on the positive side it introduces the checks from the pawn\rook battery. An alternative would be to replace the wPg7 by a wSg8 and move the wBf3 to e4, the key then being 1.Bf3 as in the Segers problem. However, this alternative key would take a flight on d4, so on balance the promotion key is better. Incidentally, Lev Loshinsky was credited as co-author of this problem, even though he had died in 1976!" Further reprints: Uralski Problemist 1993; Tages-Anzeiger 1993, Suomen Tehtäväniekat 2005.

Лев Ильич Лошинский (* 17.1.1913 in Warsaw, † 19.2.1976 in Moskva) Russian composer and Grandmaster, see wikipedia de, el, fi, fr, it, lv, ru. "Lev Loshinsky was perhaps 'the' greatest composer of threemovers." "Il est considéré comme un des plus grands problémistes russes. Spécialiste des problèmes orthodoxes en 2 et 3 coups, il remporta les neuf premiers championnats soviétiques de composition de problèmes en 3 coups (de 1945 à 1968) et quatre championnats de composition dans la catégorie des problèmes en deux coups (1947-1948, 1949-1952, 1953-1955 et 1959-1961) ainsi que le championnat de 1965-1966 dans la catégorie des problèmes en plus de trois coups. Lochinski était professeur de mathématiques à l'Université de Moscou."

Вячеслав Георгиевич Копаев (* 18.3.1938 in Moskva, † 28.5.2005 in Moskva) Russian composer and International Master, see wikipedia lv, ru. "Vyacheslav Kopaev's 1st place in the 3-mover section of the 2nd WCCT (1980) can be quoted as an example of the current WCCT 9 theme ... which already won another WCCT! What is more amazing is that 20 years later Kopaev won even another section of WCCT, which gives a glimpse on his remarkable skills in all composing genres."

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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