396. Vyacheslav Kamenskiy Russia
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1.Be2! (~)
1... Kh3,Kh5 2.Rh6,Kg3#
Too simple, even for an 5-piece position.[MV]
Compare to Denkovski's 396a.
396a. Gligor Denkovski Studentski zbor 6.3.1967
1.Bg7! Kd4,Kd6 2.Ke6,Rd2#
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397. Victor Kolpakov Russia
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a) 1.Se2! (~)
1... Kd1/Kd2,Kf1 2.Qc1,Qg1#
(1.Qc3+ Kd1 2.Be2#, 1... Kf2!)
b) 1.Sf1! (~)
1... Kd1,Kf2 2.Qb1,Qg3#
Twins with changed play. WPe4 is necessary only for second position.[MV]
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398. Vyacheslav Kamenskiy Russia
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1.Bf1! (~)
1... Kc4,Ke4,a4 2.Ke3,Qd3,Qb4#
Similar effect as in No.396, but presence of WQ makes the solution more difficult.[MV]
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399. Vyacheslav Kamenskiy Russia
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1.Bb4! (~)
1... Ke1: 2.Ra1#
1... de1Q 2.Bg2#
1... de1S 2.Rf2#
1... d1Q 2.Rf2#
1... d1S 2.Bg2#
Reciprocal mates after Pd2 promotions.[A].
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400. M. Lipton & J. Rice England
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1.Rf4? ~ 2.cb7#, 1... Sce4!
1... Sfd5/Sfe4 2.Rf8#
1... Scd5 2.Ra4#
1.Rf5? ~ 2.Ra5/cb7#, 1... Scd5!
1... Sfd5 2.Rf8#
1.Re3? ~ 2.cb7#, 1... Sfe4!
1... Scd5/Sce4 2.Ra3:#
1... Sfd5 2.Re8#
1.Rd3? ~ 2.Rd8/cb7#, 1... Sfd5!
1... Scd5 2.Ra3:#
1.Rg3! ~ 2.cb7#
1... Scd5/Sce4 2.Ra3:#
1... Sfd5/Sfe4 2.Rg8#
1... bc6 2.Bc6:#
White's four tries are defeated by a Nowotny-style interference on one of the cutting points d5 and e4. The key ensures that no double line-cutting is possible. We were pleased to discover the cook-stopping device with BBa1 and WKh8, and to get the idea to work in Meredith.[A]
Unfortunate, bud unavoidable symmetry of the tries.[ZG]
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401. Srecko Radovic Yugoslavia
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1.Qf6? ~ 2.Qe6#, 1... g5!
1... Rh5,Bf4 2.Qf3,Qf4:#
1.Qa4? ~ 2.Qd7#, 1... Bf8:!
1.Qd4! ~ 2.Qd7#
1... g5 2.Sg3# (2.Sf6?)
1... Bf8: 2.Sd2# (2.Sg5?)
1... Rh5,Rg3,Rf3 2.Sg5,Sf2,Sf6#
1... Bf4,Bg5 2.Rf4:,Rg5:#
Variation 1... Bf8 2.Sd2 makes the difference from the famous Botacchi mechanism, and the refutation for 1.Qa4? try. Here we see two interesting paits of mates, with Sf6 and Sg5 as effective and non-effective mates.[MK] ... as a matter of fact, there is no dual-avoidance after 1... Bf8 at all![MV]
See diagram 401a.
401a. A. Bottacchi 1.pr Alfiere di Re 1921
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402. Milan Velimirovic Yugoslavia
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1... Qf5: 2.Qe7#, (1... Qd4: 2.f6/Qe7#)
1.Kf2! ~ 2.Sc3/Sf6:#
1... Qd4:+,Qf5:+ 2.Se3,Sf4#
1... Qe5,Qd6,d2 2.de5,f6,Qb1#
Check-provoking key, one pair of cross-checks with pin mates and another with P-battery mates.[A]
Unpleasenat set dual after 1... Qd4: could have been avoided at the cost of loosing WP-battery mates, which is a high price for such an "improvement".[ZG]
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403. Darko Saljic Yugoslavia
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1... Sf5,dc2 2.Bd5,Qg8#
1.e5! ~ 2.Sd4#
1... Sf5,dc2 2.Qg8,Bd5#
1... Bf6+,Be5: 2.Qf6:,Sc5#
Reciprocal change in light and attractive setting.[MV]
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404. Alexander Zidek Austria
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1.Qd6? ~ 2.Qe5:#, 1... ed4!
1.Qc6? ~ 2.Qf3#, 1... Sd7:+!
1.Bb5? (~), 1... d2!
1.Rd6? ~ 2.Rf6#, 1... Sd7+ 2.Bd7:#, 1... Se6+!
1.de5? ~ 2.Qf6#, 1... Ke5: 2.Rd5#, 1... Sd7:+!
1.Kc4? (~), 1... d2!
1.Kb4! (~)
1... e5~ 2.Rd5#
1... Sf~ 2.Qe6#
1... Sf7: 2.Rf7:#
1... d2 2.Qf1#
Wechselseitige Turm/Dame- sowie Dame/Laufer-Verstellungen sowie veitere Verfuhrungen.[A]
Intriguing "Holzhausen" tries, but the value of the try 1.Qc6? Sd7:+! is decreased because of actual minor dual 1... Sd7: 2.Bd7:/Se6#.[ZG]
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405. Marjan Kovacevic Yugoslavia
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1... R~ 2.Sef3/Sf7#
1... B~ 2.Sg4/Sd7#
1.Sg2! ~ 2.Qh4#
1... Rc7 2.Sf3#
1... Rc2 2.Sf7#
1... Bf7 2.Sg4#
1... Be8+ 2.Sd7#
1... Kg5,Bf5:,Sf7 2.Qh4,Qf5:,Rg6:#
Two pairs of dual-avoidance variations with all mates from the same S-battery.[A]
Marvelous separation of set duals by means of line theme in the first pair, and by less harmonoius motives in the second pair of variations.[ZG]
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406. Y. Marker & A. Pankratyev Germany / Russia
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1.b4? ~ 2.Rc5#
1... Bc2 2.Qe6#
1... Be4!
1.Ke3? ~ 2.Rd4#
1... Be4 2.Qe6#
1... Bc2!
1.Se6! ~ 2.Sc7#
1... Be4 2.Rc5#
1... Bc2 2.Rd4#
1... Ke6: 2.Bf7#
Dombrovskis with changed mates after non-defeating thematic defences. Not new, and lacks the unity already reached by earlier examples. For instance, here WPb3 is added only to make a try move, two tries and key are made by three different pieces.[MV]
Very well-known matrix of "Ideal Dombrovskis" (including transferred mate in the tries), anticipated by several previous examples, even by Mr. Pankratyev himself! Compare to Alaikov's problem (diagram 406a). [ZG]
406a. V. Alaikov 1.pr Shahmat 1982
1.Kg2? ~ 2.Rf3#(A), 1... Bd3:(y) 2.Bg3#(C), 1... Bd7:!(x); 1.Kh3? ~ 2.Se6#(B), 1... Bd7:(x) 2.Bg3#(C), 1... Bd3:!(y); 1.Se5! ~ 2.Sg6:#, 1... Bd7:(x) 2.Rf3#(A), 1... Bd3:(y) 2.Se6#(B), (1... Ke5: 2.Bg3#, 1... Be5: 2.Qd2#)
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407. Pascal Pasture France
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1.Scd5:? ~ 2.Sd~#
1... Qc7,Qb6,Qb4:,Sc3,Se3,Sf4,Sf6,Qa6,Bf8 2.Sc7:,Sb6:,Sb4:,Sc3:,Se3:,Sf4:,Sf6:,Sb6,Se7# (Themes 1 et 2)
1... Be5,ed5 2.Qc5,Qd5:#
1... Qa2!
1.Sbd5:! ~ 2.Sd~#
1... Qc7:,Qb6,Qb4,Sc3,Se3,Sf4,Sf6,Bf8 2.Sc7:,Sb6:,Sb4:,Sc3:,Se3:,Sf4:,Sf6:,Se7# (Themes 1 et 2)
1... Be5,ed5,b4 2.Qc5,Qd5:,Rc4#
Theme 1 "Fleck 1, forme Burckadt": La cle institue au noirs trois menaces de mat. Chaque coup noir les elimine toutes, saul une. L'unique particularite de ce theme consiste en ce que la menace multiple est une menace deactiverte de batterie blanche.
Theme 2 de la "Rosace du Cavalier Blanc": Ce theme est realiee quand les retraits d'un Cavalier Blanc sur les huit cases de sa rosace, constituent autant de mats distincts a autant de defenses instituees pour le coup de cle.[A].
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408. Mircea Manolescu Romania
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1... bc4,dc5 2.Rd2,Bb2#
1.Sd8:? ~ 2.Se6# (= set play), 1... d5!
1.Qe6! ~ 2.Qd5#
1... S~,Sc5: 2.Rd2,Bb2#
1... dc5,bc4 2.Qe5:,Qc4:#
(1... d5 2.Qe5:#)
Ruchlis theme and Black Correction.[A].
The 5th WCCT example of set to actual "Ruchlis". The quoted try 1.Sd8:? is not convincing since white captures the BR on the first move.[ZG]
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409. Lars Larsen Danmark
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1.Bc6? ~ 2.ba5#
1... dc6 2.Sb7#
1... Se6!
1.Bd5:? ~ 2.Sb7#
1... Bc6 2.ba5#
1... Se6 2.Sf7#
1... Ba6!
1.Sc6! ~ 2.ba5#
1... dc6 2.Rd8#
1... Se6 2.Rd7:#
1... Rc2,Bb4: 2.Sf5,Bb4:#
Interesting and refreshing contents featuring changed mates after 1... dc6/Se6 and interference of BPc7 by two white and one black man.[MV]
A successful combination of pseude "le Grand" and changed mates after both thematic defences.[ZG]
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410. John Rice England
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1.Bf1? ~ 2.Sed3#, 1... Sf3:!
1.Bb1? ~ 2.Sed3#, 1... Sd2! (2.Qa1:?)
1.Bc2? ~ 2.Sed3#, 1... Sb6 2.Qa1:#, 1... Sb2! (2.Qc3?)
1.Be4? ~ 2.Sed3/Sfd3/Sg6#, 1... Se3:! (2.Qe3:?)
1.Bf5? ~ 2.Sed3#, 1... Rd2! (2.Rg5?)
1.Bg6? ~ 2.Sed3#, 1... Rd5! (2.Sg6?)
1.Bh7! ~ 2.Sed3#
1... Sd2,Sb2,Sb6,Sd6,Se3:,Rd2,Rd5 2.Qa1:,Qc3,Qc7,Bg7,Qe3:,Rg5,Sg6#
This problem shows a now old-fashioned idea much worked by other composers; it may, indeed, be completely amticipated. Where to put the Bd3? If it leaves the b1-h7 diagonal, Black captures on f3 to gain a flight. Staying on the diagonal, it must take care not to provoke self-interference. This is one of those constructions where no unit can be on any other square. Even the WK must be placed so that 1.Sg6+ is not a cook.[A]
Defences 1... Sb2! and 1... Sd2! appear as "bi-Valve" variations and refutations.[ZG]
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411. Dragan Stojnic (after and dedicated to M. Mladenovic) Yugoslavia
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1.Qd2? Ke4!
1.Bc2! with 6 to 9 changed mates
An attempt to extend the number of changes succeeded only in quantity, but does not come near to Misha's model with seven-to-six set-actual change (diagram 411a: *1... Sc~,Sf3,Bf5:,f3,fg3,g4,f6 2.Qe4,Sf3,Qf5:,g4,Bg3:,gf4,Sg6#, 1.Qd2:! (~)
1... Sc~,Sf3,Bf5:,f3/fg3,g4,f6,Ke4 2.Qd4,Qe2,Qd5,Qe3,Qf4:,Re6:,Qd4#).[MV]
Although the actual play is richer than the virtual one, the key is agressive. Nevertheless, the non-concurent changes must be appreciated. The impression could be finalized only after looking at the position of preceeding Mladenovic's problem. [ZG]
411a. M. Mladenovic Politika 21.11.1994
*1... Sc~,Sf3,Bf5:,f3,fg3,g4,f6 2.Qe4,Sf3,Qf5:,g4,Bg3:,gf4,Sg6#
1.Qd2:! (~)
1... Sc~,Sf3,Bf5:,f3/fg3,g4,f6,Ke4 2.Qd4,Qe2,Qd5,Qe3,Qf4:,Re6:,Qd4#
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412. Lars Larsen Danmark
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1.Bf6? ~ 2.Sg5#
1... Bg4: 2.Qg4:#
1... Bf6: 2.Qf6:#
1... Rg8!
1.Sf6! ~ 2.Qh3:#
1... Bh~ 2.Qg4#
1... Bf5 2.Bd5#
1... Se5: 2.Sg5#
A similar try+key matrix as in 409, but despite more material on the board not as rich in content.[MV]
Unthematic try with dull mates and a pair of selfblocks in the solution.[ZG]
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413. Mihailo Stojnic Yugoslavia
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1.Se2? ~ 2.Se7#, 1... Qh4!
1... c4 2.Sd4:#
(1... Qe2: 2.Rh5:#)
1.Sg2? ~ 2.Se7#, 1... c4!
1... Qh4 2.Sh4:#
(1... Qg2: 2.Rh5:#)
1.Qf1! ~ 2.Se7#
1... Qh4 2.Se2#
1... c4 2.Sg2#
(1... Qf2,Bf1: 2.Rh5:,c8QB#)
Ideal form of Vladimirov theme, with changed mates after non-defeating black thematic defences in both tries.[A]
This is only the second presentation ever of extremely difficult and attractive "Ideal Vladimirov" complex, again by the same talented young author. Unfortunately, the first presentation did not get an adequate and deserved highest tourney distinction (see the award elsewhere in this issue).[MV]
Harmonious exchange of BPc5 and BQh2 in a role of defending and defeating piece in the "Vladimirov" tries. Actual variations have nice shut-off mates.[ZG]
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414. Aleksandr Pankratyev Russia
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1.Sf7? ~ 2.Re5#
1... Sg5 2.Sfg5:#
1... Bc3!
1.Sd3? ~ 2.Re5#
1... Bc3 2.Sdc5:#
1... Sg5!
1.Sd7? ~ 2.Re5#
1... Sg5 2.Sf6#
1... Bc3 2.Sdc5:#
1... Sc6!
1.Sc6? ~ 2.Re5#
1... Sg5 2.S(e)g5:#
1... Bc3 2.S(e)c5:#
1... Sd7!
1.Sg4! ~ 2.Re5#
1... Sg5 2.Sf6#
1... Bc3 2.Re3:#
(1... Sc6,Sd7,Qc3,Re2: 2.Qc6:,Qa8,Bd5,Rf4#)
Multiphase change of mates after 1... Bc3 (4-phase change) and 1... Sg5 (3-phase change since Sd7-f6 and Sg4-f6 is the same mate). Good composition but adds nothing new to often employeed method.[MV]
Very familiar 2+2+1+1 changes after arrivals of WS to different squares.[ZG]
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415. Dragan Stojnic Yugoslavia
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1.Bd4! ~ 2.Qc5:#
1... Kd4: 2.Rd3:#
1... Qd4: 2.a8Q/B#
1... Rd4: 2.Se3:#
1... Bd4: 2.e4#
1... Sfd4: 2.Qe5:#
1... Sbd4: 2.Qd6#
1... Sd6 2.Qd6:#
1... cd4 2.Rb5:#
1... ed4 2.Qe4#
First realisation of 8-fold WB sacrifice with all different mates. Equalled record of non-checking sacrifices.[A]
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416. Vladan Vuckovic Yugoslavia
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*1... Qe4: 2.Qe4:#
1.Q~? ~ 2.Sef5#, 1... Sf~!
1.Qf6!? Sf~ 2.Qf2:#, 1... Sfg2!
1.Qg5!!? Sf~ 2.Qe3#, 1... Sfg2!
1.Qg4! ~ 2.Sef5#
1... Sf~,Sd5! 2.Sdf5,Be5:#
1... Se~,Sd7! 2.Sdf5,Sc6#
1... Qe4:+ 2.Sef5#
First version (with 20 pieces) was published in -Sahovski vjesnik- 1947. (see diagram 416a: 1.Qd7! ~,Se~,Sg4,Sd~,Se4 2.Sge6,Sfe6,Sf3,Sfe6,Be5:#) and was commented by Nenad Petrovic as follows: "Black corrections by two BSs in pseudo-Chicco theme". Exactly 50 years after (couldn't find time earlier!) I rotated the board and added three pieces. Now, besides two black correction, I obtained a kind of white correction by BQ (1.Q~?, Qf6!?, Qg5!!?, Qg4!!!). Also, one check appeared in the actual play with changed set. Os it worth those 15% added pieces?[A]
416a. Vladan Vuckovic Sahovski vjesnik 1948
1.Qd7! ~,Se~,Sg4,Sd~,Se4 2.Sge6,Sfe6,Sf3,Sfe6,Be5:#
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417. Milan Velimirovic Yugoslavia
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1.Qb4! ~ 2.Sf4:#
(1... Q~ 2.ed8S/ef8S/e8QR#)
1... Qe5: 2.e8Q#
1... Qg5 2.ef8S#
1... Qf7 2.ed8S#
1... Qe7: 2.Qe7:#
1... Rd6 2.Qd6:#
Secondary Fleck duel WP v. BQ in three variations.[A]
Impeccable economy and technique of secondary separation. Black halfpin is a clever constructional device rather than the main element.[ZG]
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418. Miodrag Radomirovic Yugoslavia
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1.Sb4! ~ 2.Qc7#
(1... c5~ 2.dc8Q/dc8S/d8S#)
1... cd4 2.dc8S#
1... cb4 2.dc8QB#
1... c4 2.d8S#
1... Kb6 2.dc8S#
1... Sd6 2.d8Q#
Secondary Fleck duel WP v. BP in three variations. Task.[A]
Rather strong key (considering the unprovided flight 1... Ka6 in the set play), yet the tematic one. Added promotion mate after 1... Sd6 is a good bonus, but double promotion mate 2.dc8Q/B after 1... cb4 and repeated mate 2.dc8S after 1... cd4 and 1... Kb6 detract a little.[ZG]
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419. Milan Velimirovic Yugoslavia
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1.Qh3! ~ 2.Qe5#
(1... Q~ 2.Rd5/Rd6/Rd7/Rdd8/Re4/Rf4/Rg4/Rh4/*Qe5#)
1... Qd5+ 2.Rd5:#
1... Qc6+ 2.Rd6#
1... Qb7 2.Rd7#
1... Qa8: 2.Rd8#
1... Qe4+ 2.Re4:#
1... Qh2/Qf3 2.Rf4#
1... Qh3+ 2.Rg4#
1... Qh4 2.Rh4:#
(1... Kg7 2.Rd7#)
Secondary duel WR v. BQ (8). This is a "relaxed" form of Secondary Fleck theme, where a random move by black thematic piece does not stop the threat (i.e. 1... Q~ produces all 8 thematic battery mates plus threatened mate 2.Qe5).[A]
This artistic interpretation od 8-fold duel between BQ and WR looks as a scheme, but M.V. was the one who found it. Unprovided flight might be a bigger blemish if there wasn't a try 1.Qg3? Kg7!.[ZG]
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