265. Michael Lipton England
| 1.Kb5! ~ 2.Qh7/Qe8/Re8/Rh7#
1... Sc3+ 2.Ka5 (2... Bc3+??)
1... Sd4+ 2.Kb6 Se6 3.Qh7# (2... Bd4+??)
1... Sa3+ 2.Kc6 Sf6/Bg7 3.Qg7#
1... Sd6+ 2.Ka4 Sf7 3.Re8#
1.Kc6? Sd4+? 2.Kb6!
1... Sb4+!
1.Kb6? Bd4+ 2.Kc6 Sb4+! (2... Sd6+??)
(1.Re4:? Bd4+!)
WK can also be on b4: 1.Ka5? Bc3+ 2.Ka4 Sc5+! (2... Sc3+??), 1.Ka4? Sc3+? 2.Ka5, 1... Sc5+!, (1.Kb3? Sa2/Sc5+? Kc2:!, 1... Sd4+!)...
Miniarutes are often anticipated, but I beleive this is original; there is no anticipation in my (substantial) miniature collection [Author]
WK runs away from black checks right from the initial position. Miniature with obvious task aspiration, where the unchecked WK is after the key exposed to four checks by BSs, two of which obstruct BB. [Milan Velimirovic]
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266. Leonid Makaronets Israel
| 1.Rc7:! ~ 2.ef5+ Kd5 3.c4#
1... Bf3 2.Qd2+ Ke4:(Ke5) 3.Re7#
1... Be2 2.c3+ Kd3 3.Sf2#
1... fe4 2.Qf6:+ Ke3,Kd5 3.Qf2,c4#
Two full-length variations with remote blocks and two sub-variations after self-block on e4. Capture key and distant WS are unpleasant. [Milan Velimirovic]
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267. Miodrag Mladenovic USA
| 1... Qf3: 2.Qc5+ Ke4: 3.Bf5#
1... Qf1 2.Qd6+ Ke4: 3.Sg5:# (2... Kc4 3.Ba6#)
1... Bd4 2.Qd4:+ Kc6 3.Qc5#
1.Ba6! ~ 2.Qc4:+ Sc4: 3.Bb7#
1... Qf3: 2.Qd6+ Ke4: 3.Bd3#
1... Qf1 2.Qc5+ Ke4: 3.Sg5:#
1... Bd4 2.Qd4:+ Kc6 3.Qd6#
Excellent reciprocal change of variations after a good key and beautiful Q-sactificial threat. Additional change of mate after 1... Bd4. Perfect construction - as expected from Misha! [Milan Velimirovic]
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268. Robin C. O. Matthews & John M. Rice England
| 1.Sdb5? ~ 2.Sc7+ Bc7: 3.b8S#
1... Rab5: 2.Ra4+ Ra5 3.Rd6#
1... Rbb5: 2.Rd6+ Rb6,Bd6: 3.Ra4,Rc6#
1... Re6/Rf6 2.Rc6+ Rc6: 3.Qc6:#
1... Sc3:!
(1.Sd5? Bd6:!)
1.Scb5! ~ 2.Sc7+ Bc7: 3.b8S#
1... Rab5: 2.Ra3:+ Ra5,Sa3: 3.Rc6,Ra4#
1... Rbb5: 2.Rc6+ Rb6 3.Ra3:#
1... Bd6: 2.Rd6: ~,Kb5:,Rd6:,Rb5: 3.Sc7,Rd4,b8Q,Ra4#
In the diagram position it looks as if White can make immediate use of his half-battery, but paradoxically, in both try and key, the line is deliberately masked by a WS. After the S has been captured by a BR, White must choose his continuation with care, in order to have a battery-opening available on move 3 which will pin the BR that has not moved. The position of the WSs determines the order of the moves by the WRs, and the result is a changed reciprocal sequence. The quiet continuation after 1... Bd6: fo
llowing the key gives four further mates, including a different promotion on b8, and another battery-opening after the K-flight. [Authors]
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269. Milan R. Vukcevich USA
| 1.Bc7! ~ 2.Rh4+ Kg5 3.Bd8#
1... Qd4: 2.Sc4+! Ke4 3.Sd2#, 2... Qe5 3.Sb2#, 2... Kg4 3.Se3#
1... Bd4: 2.Se4+! Ke4: 3.Sc3#, 2... Be5 3.Sd2#, 2... Kg4 3.Sf6#
1... Bf5: 2.Sf5:+ Ke4,Kg4 3.Sg3,Se3#
1... Kg4 2.Se4 ~ 3.Sf6#
A Rossel-fantasy! After a neat key in thematic variations black pins either Q or B, with Schiffman-like idea of unpinning after BK leaves fourth rank. Paradoxically, white continues with immediate unpins, which in both case leads to three subvariations: two BKs flights and one with newly formed battery shut-off. Milans imagination has no limits! [Milan Velimirovic]
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270. John M. Rice England
| 1.Ra6! ~ 2.Qe7+ Re7: 3.Rc6#, 2... Sd6 3.Ra5#
1... Qd5: 2.Qe3+ Qd4 3.e6#, 2... Sd4 3.Qa3#
1... Qe5: 2.Qg1+ Qd4/Qe3 3.d6#, 2... Sd4 3.Ra5#
1... Rf7: 2.Rc6+ Kd5: 3.Sb4#
1... Sd6/Sa7 2.Ra5+ Sb5 3.Rb5:#
1... c3 2.Qe7+ Kc4 3.Qb4#
The BQ vacates the diagonal g1-c5 when it captures a WP on a half-battery line. Whites checking replies are differentiated by the need to avoid capture of the WQ (1... Qe5: 2.Qe3+? Qe3:!) and to ensure that there is a mate after 2... Sd4 (1... Qd5: rules out 3.Ra5 by creating the potential flight on c6). I am not keen on the outlyning Ps e2 and f3, but they contribute to some fairly interesting by-play. As I was working on this problem, I thought it ought to be possible to set the idea with about 18 units (
I often have a target in mind, as I expect other composers have), but I found I had to add two or three extra bits to shield the WK - annoying! [Author]
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271. Miomir Nedeljkovic Yugoslavia
| 1.Kb7! ~ 2.Rd7+ Sd7: 3.Sc7#
1... Sc4 2.e4+ Re4: 3.Bc4:#
1... Se4 2.c4+ Rc4: 3.Qe4:#
1... Bb3: 2.Qb3:+ Sc4 3.Rd7#
Two analogous variations with forced openings of white lines. However, only one half of mechanism is alternatively used in each variarion. Black half-pin is not convincing either. [Milan Velimirovic]
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272. Milovan Belic & Borislav Stojanovic Jugoslavija
| 1.Qa3! Ke6 2.Ba2+ Kf6 3.Qf8+ Ke5,Kg6 4.Qf4,Bb1#
2... Ke5 3.Qc5+ Kf6,Ke4 4.Qg5,Bb1#
1... Kc4 2.Sd7 Kb5 3.Qc5+ Ka6,Ka4 4.Qb6,Bc2#
2... Kd5 3.Qa6 Kd4 4.Qd3#
1... Ke5 2.Sd7+ Ke6 3.Bf5+ Kf7,Kd5 4.Qf8,Qc5#
2... Kd5 3.Qa6 Kd4 4.Qd3#
1... Kd4 2.Sc6+ Kd5 3.Be4+ Ke4,Ke6,Kc4 4.Qf3,Qe7,Qb4#
2... Kc4 3.Qa5 Kb3 4.Qb4#
A rich play with only five pieces. Lets hope that there is not a direct anticipation! [Milan Velimirovic]
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273. Viktor Melnichenko Ukraine
| 1.Re4? g5 2.Re6 g4 3.Kf4 g3 4.Rh6#, 1... e5!
1.Rh4+ Kg5 2.Re4 Kh5 3.Re6! Kg5 4.Re5#, 3... g5 4.Rh6#
After forcing BK to e5 WR gains tempo to reach e6 in time. Simple strategy with different play in the try and the solution. [Milan Velimirovic]
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274. Mirko Markovic Vlasotince
| 1.Rh1! ~ 2.Qh2 ~ 3.Qg2#
1... b4 2.Ra1! Be2: 3.Qh1+ Kd3/Bf3 4.Qb1#
1... Rc6 2.Rf1 Re6: 3.Qh1+ Kf5: 4.Sh4#
1... c4 2.Rd1 cb3+ 3.Kb1
1... Rh8 2.ba3 Rc7 3.bc7
Regular Bristol (short) threat and bent-Bristol main variation resemble on 19th century romantic style. [Milan Velimirovic]
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275. Yury Sushkov Russia
| 1.Kf4? e5+ 2.Ke3 e4 3.Qd4#, 1... e6!
1.Kf5! e6+ 2.Kf4 e5+ 3.Ke3 e4 4.Qd4#
1... e5 2.Bb5 e4 3.Qc3 e3(Kd6) 4.Qe5#
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276. Yury Sushkov Russia
| 1.Ke3! d6 2.Rd2 Kf5: 3.Rg2 d5 4.Rg5# - model mate
1... d5 2.Bd5:! Kd5: 3.Rc2 Ke5 4.Rc5# - model mate
In both problems all variants are created by moves of one pawn. [Author]
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277. Yury Sushkov Russia
| 1.Kg4! e5 2.Kf5 e4 3.Sd2 Kd4 4.Kf4 d5 5.Sb3#
1... e6 2.Qc3! e5 3.Kf5 e4 4.Sd2 e3 5.Qc4#
Another moremover with BPs single- and double-step alternative. [Milan Velimirovic]
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278. Viktor Melnichenko Ukraine
| *1... a3 2.Kc3! Ka1 3.Kb3#
1.Kc3? Ka3 2.Kc4 Ka2 3.Kb4 a3 4.Kc3!
1... a3! 2.Bh8 e5 3.Kc2 e4!
1.Kc4! Ka3 2.Kc3 Ka2 3.Kb4! a3 4.Kc3!
The WK moves in different dirrection in the try and solution. [Author]
Pseudo-threemover with WK tempo-losing triangle. [Milan Velimirovic]
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279. Borislav Stojanovic & Aleksandr Chistyakov Yugoslavia / Russia
| 1.Ba1! a4 2.Rb2 Kf6 3.Rb6+ Kg6 4.Kb2 Kf6 5.Kc2+ Kg6 6.Kc3 Kf6 7.Kd3+ Kg6 8.Sd5 Kf5 9.e4+ Kg6 10.Rd6! ed6 11.c6! Be7 12.Se7:#
Well known Indian with multiple temporary interferences ends with interesting R-sacrifice and zugzwang. Authors claim that problem has been computer tested. [Milan Velimirovic]
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280. Aleksandr Pankratyev Russia
| 1.Sde5+ Kc5 2.Sd3+ Kc6 3.Sce5+ Kd6 4.Be7+ Ke6 5.Sf7: Kd7 6.Sfe5+ Ke6 7.Sg6: Kf7 8.Sge5+ Ke6 9.Sg4: Kd7 10.Sge5+ Ke6 11.Sf3: Kd7 12.Sfe5+ Ke6 13.Sc5+ Ke5: 14.f4#
WS makes the half-wheel from e5 in order to clear the way for WPf2. As usually happens in the life, having done the most of the hard work the exhausted hackney goes to the butchery (it is left en prise to be captured by BK). Note: this problem is not computer tested. [Milan Velimirovic]
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