Free online chess problem of the day

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Each day I offer you a different free online chess problem with various difficulties. One day you will have to solve an easy checkmate in 2 and the day after a very difficult free online chess problem in 2 or a checkmate in 6.

Bruno's Chess Problem: 01/17/2022

A.Cheron, 1930

Mate in 3(***)
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2022-01-17 06:26:17, by problemist
"This method, seemingly very clever, actually played into our hands! And so it often happens that an apparently ingenious idea is in fact a weakness which the scientific cryptographer seizes on for his solution." Herbert O. Yardley (1889-1958) "The American Black Chamber" (1931).

Published in "Feuille d'Avis de Lausanne," 19 Jul 1930. Meredith with 9 pieces showing an Indian. The key 1. Bb8 moves beyond the critical square c7, now 1.. d5 2. Rc7 releasing stalemate 2.. Kxh2 3. Rh7#. On 1.. d6 2. d5 Kxh2 3. Rh4#. The wB has to be switched off and a R-row opened. In contrast to the classical Indian the double check (after 2. Rh7+) is not needed here. Reprinted in "Le Temps," 12 Oct 1930 (70).

André Chéron (* 25.9.1895 in Colombes, Seine, † 12.9.1980 in Leysin) French-Swiss composer and International Master, see wikipedia in many languages. "André Chéron was a chess player who is nowadays best known for his work in the theory of endgames and for his written works. In 1952 his "Nouveau traité d'échecs - la fin de partie" was published and included almost 700 more studies than the 1927 "Traité complet d'échecs". His masterwork was the 4-volume "Lehr und Handbuch der Endspiele", published between April 1958 and September 1964, which contains 2336 studies. He also wrote about chess composition "Les Échecs artistiques" (1934). He was one of the first five persons who received the title of International Master in chess composition. He was 3 times French chess champion and he also wrote books about bridge."

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