513. Nikola Veliky Ukraine
|
1.Bf8? Rd4,Re5 2.Qg5,Qd7#, 1... c3!
1.Qh8? Rd4,Re5 2.Qh5,Qd8#, 1... c3!
1.Qa1? Rd4,Re5 2.Qa5,Qd1#, 1... c3!
1.Qc3! Rd4,Re5,Re6: 2.Qa5,Qc4:,Rc5#
Almost a four phase Zagoruiko (mate 2.Qa5 appears twice), but the same refutation to all tries is a disappointment.[MV]
|
514. Valery Shanshin Kirgizia
|
1... Kd4:,Be4: 2.Qc3:,Sf3#
1.Qc3:?(A) ~ 2.Se6#
1... Kf4,Be4: 2.Qg3,Se2(B)#
1... fe4!
1.Se2!(B) ~ 2.Re6#
1... Ke4:,Be4: 2.Qe3,Qc3:(A)#
1... fe4,Sf8 2.Qg5,Qf4#
Changed mates in "Chepizny" form and theme Salazar.[A]
A three phase changed mates after black self-block and BK flight to different squares, which is not quite "Chepizny" form where the same mate is a response do different BK moves. A reversal of white first and mating moves Qc3 and Se2 is often wrongly labelled as "Salazar" theme, which in fact does contain such reversal, but also requires a change of two direct/indirect mates which further implies the white switchbacks. However, the inaccuraties in terminology take nothing from the value of this excellent Meredith.[MV]
|
515. Sinisa Perunicic Yugoslavia
|
1.Sd4? ~ 2.Sf2#(A)
1... Rf3,Bd4: 2.ef3,Qc6#
1... Re3!(a)
1.Rd3? ~ 2.Sg3#(B)
1... Rd3:,Bf2 2.Qd3:,Sf2:#
1... Be3!(b)
1.Rf8! ~ 2.Rf4#
1... Re3(a),Be3(b),Rf3 2.Sf2(A),Sg3(B),ef3#
Dombrovskis and Grimshaw.[A]
Economical rendering of a good old Grimshaw mechanism for the Dombrovskis theme, but the strongest white piece has only a side role, especially after the key.[MV]
|
516. Sinisa Perunicic Yugoslavia
|
1.Qc2? ~,Bb1,gf3,Re5,Sc5,Se6 2.Qe4,Qb3,Bf3:,Sb6,Qc5:,Qc6#
1... Rg6!
1.Qe2! ~,Bb1,gf3,Re5,Sc5,Se6 2.Qe4,Bb3,Qf3:,Qe5:,Sb6,Qe6:#
Five changed mates in economical position, but symmetry, as always, spoils the impression.[MV]
|
517. Valery Shanshin Kirgizia
|
1.Sb4? ~ 2.Qa7:#, 1... Rc5!
1.Sc7? ~ 2.Qa7:#, 1... Bc5!
1.Sb8! ~,Rc5,Bc5,a6 2.Qa7:,Bd2,Bd8,Qb6#
Grimshaw.[A]
Interesting pin-mates after mutual interferences of BR and BB in pleasant position, even with superflouos BRg8, but with unpleasant dual after 1... Rc6 2.Bd2/Rb5#.[MV]
|
518. Darko Saljic Yugoslavia
|
1.Qc8? ~,d5(x) 2.Qc4(A),Qg4(B)#
1... Rb4/Rb3!
1.Qg8? ~,f5(y) 2.Qg4(B),Qc4(A)#
1... Rh4!
1.Qe8? ~,d5(x),f5(y) 2.Qe4:,Qb5:(C),Qh5:(D)#
1... Rb3!
1.Qe5! ~ 2.Qe4:#
1... ~,d5(x),f5(y) 2.Qe4:,Qh5:(D),Qb5:(C)#
1... e3,Rbe5:,Rhe5: 2.Qe3:,Rb2,Rh2#
This ambitious pattern play consists of two halves, one corresponding to pseudo le Grand theme and another to reciprocal change of mates, always with different departure squares for thematic mates. Pity that one try is defeated by two defences.[MV]
|
519. V. Melnichenko & V. Rudenko Ukraine
|
(*1... Qf1 2.Rd4#)
1.Bd6? ~ 2.Sb4/Sf4#
1... Qd4,e5 2.Sb4,Sf4#, 1... Qf1!
1.Qg5:? ~ 2.Qd8#
1... Be5:,Qc5: 2.Sf6,Sf4#, 1... f6!
1.Qa5! ~ 2.Qd8#
1... Be5:,Qc5: 2.Sb4,Rd4#
1... Sc7+,Bf6 2.Sc7:,Sf6:#
6th WCCT theme with reciprocal change of defensive motives Nietvelt / guard. Rudenko theme in a non-traditional form.[A]
The publication of this problem have been postponed since the WCCT is still running.
|
520. Efren Petite Spain
|
1.Sd2?(A) ~ 2.Se6#
1... Rg6(b),Rd2: 2.Qc1(C),Rf5#, 1... Rf6!
1.Se3?(B) ~ 2.Se6#
1... Rf6(a),Re3: 2.Qc1(C),Bd6#, 1... Rg6!
1.Qc1!(C) ~ 2.Se6#
1... Rf6(a),Rg6(b) 2.Se3(B),Sd2(A)#
1... Rc2,Rc4 2.Rf5,Bd6#
1... Rg7: 2.Bd6/Sd2#
Not quite new but clear presentation of the Banny theme. A dual by-variation could have been easely eliminated by addition of the WPg6.[MV]
|
521. Dragan Stojnic Yugoslavia
|
1.Qa3? (~), 1... Ke7:!
1... Re7: 2.Qg3#
1.Qd2? (~), 1... Re7:!
1... Ke7: 2.d6#
1... c4 2.Qb4#
(1.h3? Re7: 2.Qh2#, 1... Ke7:!)
(1.Qa6? Re7: 2.Qb6:#, 1... Ke7:!)
(1.Rc8? Re7: 2.Rc6#, 1... Ke7:!)
1.dc6(ep)! (~)
1... Ke7:,Re7: 2.Qa3,Qd2#
1... Rf8: 2.ef8Q#
Ideal form of theme Vladimirov with changed mates after black thematic defences/defeats.[A]
The greatest difficulty of the Vladimirov theme - how to avoid the key move to be a mate in tries - is here resolved ny means of "It's now or never" particularity of the en passant capture.[MV]
|
|