THE LEPUSCHÜTZ THEME by Hans Peter Rehm
"... The English language and chess problems terminology lacks a word for one of the most
fundamental stratagems. If the success of a specific attack is guaranteed by the
consequences of a specific white move during the foreplan the logical school calls this white
move 'Führung' (German)...."
"...The subject of this article is the following paradoxical theme:
A specific Führung would be successful if black had not time to defend. So white allows
a check, and the Führung is successful as an answer to this check..."
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"...Let us look at our first (simple) example.
In Nr.1 the fundamental attack (main plan) is 1.Sb3??#. The Führung (unblock of
square b3) 1.Ka3!? would prepare this but 1... Be7! defends. 1.Be6! [2.Bc8:] provokes the
check Be6:+ (weakening a6), but now the Führung 2.Ka3 is successful because the threat
(3.Ba6) forces 2... Bc8 so that there is no time for the good move Be7 and the Führung
triumphs by 3.Sb3#. To get some classification I write first the white piece doing the
Führung then the black checking piece and finally the purpose of Führung. So the
type of No.1 is: K/B-antiblock...."
International Grandmaster FIDE for Chess Composition Hans Peter Rehm, undoubtedely the World leading
expert for New German Logical School, offers the authoritative and systematic analysis of the subject and
illustrates it with 36 carefully selected examples.
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1. Herbert Grasemann Weltspiegel 1947
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20 YEARS OF THEME VLADIMIROV by Milan Velimirovic
"The first realization of this perhaps the most difficult pattern theme was published exactly 20 years ago by one of the World leading composers Yakov Vladimirov, who by this claimed the right to call the theme by his name..."
"...Theme is based on the paradoxical relation between one white and one black move. If white tries move A, black defeats by move x. However, after the key if black defends with move x, white mates with move A. Of course, to get the status of theme the pattern should appear at least twice:
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1. A? x!, 1. B? y! [ , 1.C? z!. ... ]
1. key! x, y [ , z... ] 2. A, B [ , C... ] #
So far, there is not any acceptable example with more than two variations...."
"...Problem 2 is the one which provoked my real interest in theme and made me start exploring its possibilities. Unusual arrangement of prospective white P-batteries anticipatory opened in tries for threats by non-key pieces and attractive R-sacrificial key which leads to dual-free post-key block make this excellent problem the first real affirmation of the Vladimirov theme..."
Editor of Mat Plus gives the overview of one of the most difficult two-move themes. 24 examples, probably
all that exist, are reproduced here. They are classifed according to the side which makes the white key move ineffective in the tries.
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2. A. Dombrovskis 64 1977
1.e5? ~ 2.Qf3:#, 1... f2!
1.cb6? ~ 2.Rc1#, 1... d2!
1.Rc2! (~)
1... d2,f2 2.cb6,e5#
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MAT PLUS COLLECTIONS
MARK ADABASHEV (1908 - 1954) by Alexander Pavlovich Grin
"...What I know is only the small part of his tragic life story. Mark Adabashev was born in Rostov-on-Don, 1908. In early 1920's he moved to the Taganrog, and several years later, just before the World War II, he moved again to the peninsula of Krim. After the War, Adabashev was accused and prosecuted for being a German translator during their occupation of the Krim (or maybe some other place). At that time, it was treated as the collaboration with the occupator. Adabashev was punished by removal to the North, possibly to the town of Arhangelsk. There he had a hard life, without any possibility of getting a job since he had been treated as 'people's enemy', 'supporter of the occupator'. Depressed by such a miserable life, he finally ended it by committing suicide.
Now we have only his quiet diagrams to talk about him, but they really have a lot to say..."
Although the oldest living International Grandmaster FIDE for Chess Composition Alexander Pavlovich Gulyayev - Grin was born the same year as the genial composer of two-movers Mark Adabashev, he never had a chance nor to meet him, neither even to see his photo. Nevertheless, there is no other person who can offer more information about Adabashev's life than Mr. Grin. Collection of 76 reprinted problems is nearly complete Adabashev's output. Following three are just a small illustration of his exceptional talent.
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M. Adabashev hm Shakhmatny listok 29,1929
1.Sd5! ~ 2.Sef4#
1... Kc4,Ke4 2.Sb4,Sd4#
(1... Be2: 2.Qe2:#)
Complex form of Schiffmann defence by BK moves (A. C. White calls it a "Black King Schiffmann"). Key gives two flights.
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M. Adabashev 1.pr Konk. Moldavian SSR 1935
1.Qc7! ~ 2.Qc6#
1... Qg5: 2.Sg3# (2.Sfd6?)
1... Qe2: 2.Sfd6# (2.Sg3?)
1... Bb5 2.Sc5# (2.Sbd6?)
1... Bc4: 2.Sbd6# (2.Sc5?)
(1... Sb4,Qf5:+,Bb7:+,fg5,Se7+
2.Re3:,Bf5:,Qb7:,Qe5,Qe7:#)
Two pairs of unpin defences with dual avoidance. "Adabashev theme" according to A. C. White: Java-like dual avoidance where one of the lines of guard is replaced by a direct guard, with the guarding piece liable to capture.
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M. Adabashev 1-2.pr Konk. Tambowskaya Prawda 1935
1.Sc6! (~)
1... S4~,S4e5,Sf6 2.c4,Scd4,Sbd4#
1... f6 2.c3#
(1... Qh5,S6~,d7~ 2.Rh5:,Se7,Qc8#)
Complex white "double"-interference (+Somov) mates after WS corrections. |
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OTHER MATERIAL
Mat Plus No.15 also contains awards in informal tourneys: Helpmates 1995 (judge: Marko Klasinc, Slovenia), Twomovers 1996 (judge: Colin Sydenham, England) and Selfmates 1996 (judge: Zivko Janevski, Macedonia).
Then "MISCELLANEOUS" column with short texts by Alexander Grin, Sir Jeremy Morse, John M. Rice and Milan Velimirovic. Readers will also enjoy in several original "Zagoruyko" twomovers by young Yugoslav author Dragan Stojnic.
Not to forget, there is also the announcement of Mat Plus Challenge No.1 , first of the planned series of theme tourneys for direct twomovers.
Of course, all quality comments for Original problems , given in advance on this site, will be quoted in the magazine.
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