Chess problem: 8 days ago

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Bruno's Chess Problem: 04/11/2021

H.Lepuschutz, Deutsche Schachzeitung, 1950

Mate in 5(****)
chess problem diagram
White to play

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Level : * (very easy) to ****** (very hard)

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1. Ra8! ... 2. Rxa4 ... 3. Nb4#
     2... e3 3. Qc2#
     2... Bd2 3. Nxe5#
  1... Rxa8+ 2. Kh7 ... 3. Nb4#
     2... Ra4 3. Nxe5+ Bxe5 4. Rc2 ... 5. Qe2#
           4... e3 5. Qf5#
  
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2021-04-11 11:42:33, by problemist
The mainplan 1. Rc2? (2. Qe2#) still fails to 1.. e3! and also the introduction 1. Nxe5+? BxN 2. Rc2 still falls short to 2.. g6+! 3. Kg8 e3! when 4. Qf5# does not work. So first White moves his king out of the B-check, but 1. Kg8? Rc4! is too slow, thus using tempo by the check provocation (Lepuschütz theme) 1. Ra8 with the forced threat 2. Nb4+ RxN 3. Ra3+ and 1.. Rc4 2. Ra3+, thus Black has to take the wR 1.. RxR+ 2. Kh7 and the threat 3. Nb4# forces the switchback 2.. Ra4. Now the mainplan 3. Nxe5+ BxN 4. Rc2 e3 5. Qf5#. Comment by GM Hans Peter Rehm (source see below): "Type: K\R-walk out of (later) check. The theme is combined with a black decoy opening the line Qf2-f5. This fine composition has a very subtle black check g6+: first g6+ is deep because it is not obvious in the diagram: white only makes it possible when he forces the necessary line opening; secondly, this check by Be5 is only good because it wins a tempo to guard f5. White wins a tempo by allowing a check in order to prevent black to win a tempo by checking. One admires that such a deep idea has been realized in such a wonderful light position."

Dr. Hans Lepuschütz (* 5.8.1910 in Graz, † 6.9.1984 in Graz) Austrian composer and International Master, see wikipedia lv. "Hans Lepuschütz was a great specialist of the logical multimover and member of the Graz chess problem school (Grazer Schule) which linked logical combinations and aesthetic mate positions. The Lepuschütz theme means check provocation by White in a multimover, usually with a logical motivation. GM Hans Peter Rehm presented the Lepuschütz theme on IM Ralf Krätschmer's website berlinthema.de. Please have a look at these problems, you will not regret it. MontFuji presented in detail (in French, on France-Echecs.com) a doubled Lepuschütz and pendular movements associated with the Lepuschütz theme, as well as pendular movements associated with the doubled Lepuschütz theme and a Holst promotion."
"Der Grazer Jurist komponierte ab 1934 ca. 400 Probleme und errang damit über 100 Preise. Bis auf wenige Dreizüger umfaßt sein Lebenswerk ausschließlich Mehrzüger. Die für Lepuschütz typische Verschmelzung von scharfsinnigen logischen Kombinationen mit ästhetischen Mattbildern wird auch heute noch 'Grazer Schule' genannt." (Problempalette II, Vienna, 1991)

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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