Problème d'il y a 7 jours

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Bruno's Chess Problem: 25/09/2025

S.Herland, Deutsche Schachzeitung, 1906

Mat en 3(***)
chess problem diagram

Les blancs jouent

Astuce :

niveau : * (très facile) à ***** (très difficile)

1. Nb5! ... 2. Qc2 ... 3. Nc7#
  1... Ke4 2. Qc2+ Kd5 3. Nc7#
     2... Kf3 3. Nbd4#
  1... Kc4 2. Qe2+ Kd5 3. Ne7#
     2... Kb3 3. Nfd4#
  1... Kc6 2. Ne7+ Kxb5 3. Qe2#
  1... Ke6 2. Qc2 ... 3. Nc7#
     2... Ne4 3. Qxe4#
  1... Ne6 2. Qe2 ... 3. Ne7#
  1... Ne4 2. Qa2+ Kc6 3. Nfd4#
  1... Nf3 2. Nc7+ ... 3. Qc2#
  1... Nh3 2. Qe2 ... 3. Ne7#

2025-09-25 09:52:42, by problemist: "Had I known that the Germans would not succeed in producing an atomic bomb, I never would have lifted a finger."
Albert Einstein (1879-1955) To Newsweek magazine, March 10, 1947, in regard to sending the famous letter to President Roosevelt about the new possibility of constructing atom bombs. Einstein allegedly maintained that the development of nuclear energy would have proceeded much the same even without his intervention.

Shown are two mirror mates and a quiet threat. The symmetric key is 1. Nb5 (2. Qc2 (3. Nc7# mirror mate) Ne6 3. Ne7#) with many variations 1.. Ke4 2. Qc2+ Kd5, Kf3 3. Nc7#, Nbd4# (switchback) and the symmetric 1.. Kc4 2. Qe2+ Kd5, Kb3 3. Ne7# ( mirror mate), Nfd4#; 1.. Kc6 2. Ne7+ Kxb5 3. Qe2#; 1.. Ke6 2. Qc2 (3. Nc7#) Ne4, Kd5 3. Qxe4#, Nc7#; 1.. Ne4 2. Qa2+ Kc6 3. Na7# or Nb(f)d4#; 1.. Ne6 2. Qe2 3. Ne7#; 1.. Nf3 2. Nc7+ 3. Qc2# (model mate after 2.. Kf3); 1.. Nh3 2. Qe2 3. Ne7#; 1.. Nf8 2. Qc2 like in the threat.

Sigmund Herland (* 27.9.1865 in Vienna, † 15.8.1954 in Bucharest) Austrian-Romanian composer and player, see wikipedia arz, de, en, ru. "A collection of 327 selected problems by Sigmund Herland was published by Ekaterina Yaremska-Iliescu. Sigmund Herland composed in all genres (studies, direct or fairy problems, in Bohemian or strategic style) and was often very creative and original. Sigmund Herland also composed what can be considered as the forerunner of the first cyclic Babson task (composed by Peter Hoffmann, Schach 2005). The story of this problem, published by Alain C. White in the "Theory of Pawn Promotion," was evoked by Steven Dowd in his "Skittles" on ChessCafe."

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