No. 58, Apr-Jun 2012
R0192 - Stanislav Vokal
StrateGems, No. 58, Apr-Jun 2012
13+10. #4
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[2N1k2r/1pBp1p1p/prpP1R1P/1PP1p1P1/8/1P6/2P3P1/4K2R]
Solution
If the bRb6 is the original Ra8, the bK must have moved to let it pass. If it is a promoted piece, the promotion must have occurred between d1 and h1, thus rendering White’s castling illegal. Solution: 1.0-0! (Not 1.Kf1? 0-0!) Rf8 (1…0-0??) 2.R1f5 Rg8 3.Rxf7, 4.Re7#.
P0329 - Rustam Ubaidullaev
15+14. PG 17½
[4nk2/p1pp1rpp/1p1p1p1q/2P1n3/3b4/8/PPP1PPPP/RNB1KBNR]
1.d3 b6 2.Kd2 Ba6 3.Kc3 Bc4 4.dxc4 Sc6 5.Qd6 exd6 6.c5 Be7 7.Kc4 Bf6 8.Kb5 Bd4 9.Ka6 Qh4 10.Kb7 Sf6 11.Kxa8 0-0+ 12.Kb7 Se8 13.Ka6 f6 14.Kb5 Rf7 15.Kc4 Kf8 16.Kd3 Se5+ 17.Kd2 Qh6+ 18.Ke1.
P0330 - François Labelle
1+1. PG 19½
[8/8/8/4K3/8/8/4k3/8]
1.c4 e5 2.Qb3 Qh4 3.Qxb7 Qxh2 4.Qxb8 Qxg1 5.Rxh7 Rxb8 6.Rxg7 Rxb2 7.Rxf7 Rxa2 8.Rxd7 Rxd2 9.Rxa7 Kxd7 10.Rxc7+ Kd6 11.Rxc8 Qxg2 12.Rxf8 Kc5 13.Rxg8 Rxg8 14.Bxg2 Rxg2 15.Sc3 Rxf2 16.Kxf2 Kxc4 17.Kf3 Kxc3 18.Bxd2+ Kxd2 19.Ke4 Kxe2 20.Kxe5.
P0331 - James Soliman
14+13. PG 20
[rn1q2nr/p2b1p1p/pp1b4/4k3/8/2PK1P2/P1P1NP1P/RNB1QB1R]
1.d4 g5 2.d5 g4 3.d6 g3 4.dxe7 d5 5.e4 Kd7 6.e8R d4 7.Re6 d3 8.Rb6 d2+ 9.Ke2 cxb6 10.Qe1 d1B+ 11.Kd3 Bf3 12.gxf3 g2 13.Se2 g1Q 14.e5 Qg7 15.e6+ Kd6 16.e7 Qc3+ 17.bxc3 Bd7 18.e8S+ Ke5 19.Sc7 Bd6 20.Sa6 bxa6.
P0332 - Silvio Baier
12+15. PG 22
[2b5/2ppp1bp/pp2p2n/2kr4/2PnPq2/3r4/PP1P1P2/RN2KBNR]
1.e4 Sc6 2.Qg4 Sd4 3.Qe6 fxe6 4.h4 Kf7 5.h5 Kf6 6.h6 Ke5 7.hxg7 Sh6 8.g8Q Kd6 9.Qg4 Rg8 10.Qd1 Rg3 11.c4 Rc3 12.g4 Rxc1 13.g5 Rc3 14.Qb3 Rd3 15.Qb6+ axb6 16.g6 Ra5 17.g7 Rd5 18.g8Q Kc5 19.Qg4 Bg7 20.Qd1 Qf8 21.Qa4 Qf4 22.Qa6 bxa6. (SS&PK)(Q,Q).
Double Ceriani/Frolkin with two white Queens, cross-captured after performing a Pronkin. I have not seen this combination before. (A)
P0333 - Gianni Donati & Olli Heimo
13+14. PG 22
[rnb1kbnr/1pp2pp1/5p1P/1pR2Q2/2B3K1/2P1PP2/PPpN1NP1/8]
1.f3 h5 2.Kf2 Rh6 3.Kg3 h4+ 4.Kg4 h3 5.Sxh3 Re6 6.Sf2 d5 7.h4 d4 8.h5 d3 9.h6 dxc2 10.Rh5 Qd3 11.Rb5 Qc3 12.dxc3 a6 13.Bg5 axb5 14.Bf6 exf6 15.e3 Bd6 16.Bc4 Kd7 17.Qd3 Re8 18.Sd2 Se7 19.Rh1 Rh8 20.Rh5 Sg8 21.Rc5 Ke8+ 22.Qf5 Bf8.
P0334 - Nicolas Dupont
14+15. PG 23½
[1n2R3/2pp2pp/1r3bb1/2pnkp2/2qr4/1p6/1PPP2PP/RNBQKBNR]
1.f4 b5 2.f5 Bb7 3.f6 Be4 4.fxe7 Bg6 5.e4 f5 6.e5 Kf7 7.e8R b4 8.Re6 b3 9.Rb6 axb6 10.e6+ Kf6 11.e7 Ra4 12.e8R Rd4 13.Re5 Be7 14.Rc5 bxc5 15.a4 Ke5 16.a5 Sf6 17.a6 Qg8 18.a7 Qc4 19.Ra6 Sd5 20.Rf6 Re8 21.Rf8 Bf6 22.a8R Re6 23.Ra1 Rb6 24.Re8+.
The anti-Pronkin theme (the original Ra1 going to e8) is reinforced in two ways: a second Ceriani/Frolkin Rook is promoted on the thematic square e8, while a third promoted Rook goes back to the thematic square a1. This content is presented in an at home position (except for the thematic Re8). To the best of my knowledge, such a twofold reinforced anti-Pronkin is new. (A)
P0335 - Unto Heinonen
12+14. PG 27
[8/p3pn2/2nk4/1p1r3b/p6p/r1p1p3/PPP1P2q/RNBQKBNR]
1.h4 c6 2.h5 Qc7 3.h6 Qh2 4.hxg7 h5 5.f4 h4 6.f5 Rh5 7.f6 Sh6 8.g8B Bg7 9.fxg7 f5 10.Bc4 f4 11.Bb5 cxb5 12.g8B Sc6 13.Bc4 d5 14.g4 dxc4 15.g5 Bg4 16.g6 0-0-0 17.g7 Rd3 18.g8B Ra3 19.d4 c3 20.Bb3 Sf7 21.Ba4 bxa4 22.d5 b5 23.d6 Rd5 24.d7+ Kc7 25.d8B+ Kd6 26.Bb6 Bh5 27.Bbe3 fxe3.
Four Ceriani/Frolkin Bishop promotions and homebase, without visible promoted pieces. Compare with Silvio Baier’s P1202297 in http://www.softdecc.de/pdb/index.pdb (the shortest realization, but with a promoted bB in the diagram) and the 1st prize in FIDE World Cup 2011: http://www.selivanov.ru/download/Awards/2011/2WCUPRETROS.pdf (a promoted bQ, but also, two of the C/F captures are more subtle, being made by pieces).
P0336 - Rustam Ubaidullaev
15+16. PG 27
[kr1B4/p1bp2pn/B1n2p1p/qpp1p3/PP6/4P3/N1PP1PPP/Qb2rKNR]
1.e3 c5 2.Ba6 b5 3.a4 Bb7 4.Ra3 Bd5 5.Rd3 Ba2 6.Rd6 Qa5 7.Rb6 Sc6 8.Rb7 0-0-0 9.Rc7+ Kb8 10.b4 Ka8 11.Bb2 Rb8 12.Bf6 e5 13.Rc8 Bd6 14.Re8 Bc7 15.Bd8 Sf6 16.Re6 Re8 17.Rd6 Re6 18.Rd3 Rd6 19.Rb3 Rd3 20.Rb2 Rb3 21.Sc3 h6 22.Qa1 Sh7 23.Rb1 f6 24.Rd1 Rb1 25.Kf1 Rc1 26.Re1 Bb1 27.Sa2 Rxe1+.
