From retros at janko.at Fri Jun 5 07:09:50 2009 From: retros at janko.at (VIAGRA ® Official Site) Date: Fri, 5 Jun 2009 07:09:50 -0400 (EDT) Subject: [Retros] SALE 80% 0FF on Pfizer! Message-ID: <20090605110950.8B0F161E5C@mailwash39.pair.com> An HTML attachment was scrubbed... URL: From CAILLAUDM at aol.com Sat Jun 6 12:34:58 2009 From: CAILLAUDM at aol.com (CAILLAUDM at aol.com) Date: Sat, 6 Jun 2009 12:34:58 EDT Subject: [Retros] Retro solving in Messigny 2009 Message-ID: Hello, Here are the retros submitted to 19 solvers in the retro solving competition (French Retro Solving Championship) in Messigny last week-end : I rsRqkb2/2pp1pp1/4p3/7p/P7/8/1PPPPPPP/1SBQKBSR SPG 8.0 (16+11) (5 points) II 3q2sr/kpp2ppp/s7/p1p3B1/Pb6/S2b2PS/1P2PP1P/R2Q2K1 SPG 14.0 (12+14) (5 points) III rsbqkbsr/ppp1p2p/6P1/3P2P1/P2Q2p1/5S1B/1P2P3/1SB1K1RR SPG 15.5 (14+14) (5 points) IV rs1b4/p3p2p/1s1pp2p/7k/p7/1q5b/PPP1P2P/RSBQKBSR SPG 19.0 (13+14) (5 points) V rsbqkb1r/pppp1ppp/8/6s1/8/8/PPPPPPPP/RSB1KBSR SPG 7.5 Madrasi (15+15) (5 points) VI 1B4Br/pp3P1p/qpP4R/1Q1Pp1P1/1S1P2p1/4P1k1/2P3P1/4K2R Add a piece on a5 and mate in 2 (15+9+1?) (3 points per solution; number of solutions is not indicated) VII RB1Sk3/RPp2pp1/K1p1p3/p1P5/4p3/1P6/P1PP1P2/2q5 Shortest path by wSd8? (12+9) (10 points) VIII 1qk1K1SQ/pprpprpR/2p2p1p/7P/8/2P5/1P1PPPP1/1SB2B2 Minimal number of moves since first move by wTh7? (14+12) (10 points) All problems are originals for Phenix. VI is given here in an amended version, as the version submitted in Messigny was unfortunately incorrect. Some points were given for incomplete solutions in VII and VIII with additional questions such as "which captures are determined?" in VII or "who is to move?" in VIII... Before the competition, I thought this could be a tough set. Anyway, the new French Champion Thierry LE GLEUHER succeeded to solve everything in the given time of 2 hours, losing only 1 point due to a slight mistake! Best, Michel -------------- next part -------------- An HTML attachment was scrubbed... URL: From t.legleuher at hotmail.fr Sun Jun 7 17:10:29 2009 From: t.legleuher at hotmail.fr (Thierry LE GLEUHER) Date: Sun, 7 Jun 2009 23:10:29 +0200 Subject: [Retros] Messigny retro composing contest Message-ID: Dear retro friendsThere is the award of the Messigny 2009 retro composing contest. Special thanks to Andre? FROLKN, Kostas PRENTOS, Jorge J. LOIS and Roberto OSORIO for their participation. The aim of this new idea was to maximize the number of the thematic retro-moves. So my judgement has been made by classifying the problems per number of retro moves and in the event of equality by holding account of the number of moves of the proof game. An other criteria like ratio (n/m as explained after) can be used. This ratio is written for each problem for information. Now you can try to improve these different tasks. Your problems will be welcome for Phenix. Sincerely Thierry 1st Place - Messigny 2009 Michel CAILLAUD rn2kqnr/p1pp1ppp/2p4P/2P5/8/3n4/1PPPPPP1/2BQKB2 SPG in 16.0 moves (12+14) C+ last 12 single moves? 1.Nf3 e5 2.Nd4 Bc5 3.Nc6 bxc6 4.Nc3 Ba6 5.Ne4 Bc4 6.Ng3 Bb3 7.axb3 Qe7 8.Ra4 Qf8 9.Rf4 exf4 10.h3 fxg3 11.Rh2 gxh2 12.h4 h1=N 13.h5 Ng3 14.h6 Nh5 15.b4 Nf4 16.bxc5 Nd3+ (C+ Natch 2.4 in 0.88") last 12 single moves forced ! n=Thematic single moves m=Proof game single moves Ratio n/m=12/32=0.375 2nd Place - Messigny 2009 Andre? FROLKIN rn5r/pppknppp/P1n5/6p1/2bq4/8/1PPPPPP1/2BQKB2 SPG in 17.0 moves (11+15) C+ last 12 single moves? 1.Nc3 d5 2.Ne4 Be6 3.Nf6+ exf6 4.Nf3 Bd6 5.Ne5 Ne7 6.Nc4 Bg3 7.hxg3 dxc4 8.Rh5 Qd4 9.Rb5 Kd7 10.Rb3 cxb3 11.a3 Bc4 12.Ra2 bxa2 13.a4 a1=N 14.a5 Nb3 15.a6 Na5 16.g4 Nac6 17.g5 fxg5 (C+ Natch 2.4 in 1.04") last 12 single moves forced ! n/m=12/34=0.353 3th Place - Messigny 2009 Andre? FROLKIN 1n2k1nr/Ppqppp1p/5p2/b7/4r2P/5b2/1PPPPPP1/2BQKB2 SPG in 16.0 moves (12+14) C+ last 8 single moves? 1.Nf3 a5 2.Nd4 a4 3.Nb3 axb3 4.a3 Ra4 5.Ra2 bxa2 6.h4 axb1=B 7.Rh3 Ba2 8.Rc3 Bd5 9.Rxc7 Bf3 10.Rxc8 Re4 11.Rc6 Qc7 12.Rf6 gxf6 13.a4 Bh6 14.a5 Be3 15.a6 Bb6 16.a7 Ba5 (C+ Natch 2.4 in 9.62") last 8 single moves forced ! n/m=8/32=0.250 4th Place - Messigny 2009 Michel CAILLAUD rnb2bnr/pppqppp1/2p5/8/4Pk2/6pK/PPPP1P1P/RNBQ2NR SPG in 9.0 moves (14+16) C+ last 4 single moves? 1.e3 h5 2.Bb5 h4 3.Bc6 dxc6 4.Ke2 Kd7 5.Kf3 Ke6 6.Kg4 Qd7 7.Kh3 Kf5 8.e4+ Kf4+ 9.g4 hxg3ep++ (C+ Natch 2.4 en 0,33") last 4 single moves forced ! n/m=4/18=0.222 5th Place - Messigny 2009 Jorge J. LOIS & Roberto OSORIO 5Qnr/p1pppp1p/1qp2p1P/1r5b/6nk/3P4/PP2NPPR/R1N2BK1 SPG in 22.5 moves (13+15) last 4 single moves? 1.c4 Nc6 2.c5 Ne5 3.c6 bxc6 4.h4 Ba6 5.h5 Bxe2 6.d3 Rb8 7.Bg5 Rb5 8.Bf6 gxf6 9.Nd2 Bh6 10.Nb3 Be3 11.Nc1 Bc5 12.Kd2 Bd6 13.Ke3 Kf8 14.Kf4 Kg7 15.Kg3 Kh6 16.Kh2 Kg5 17.Qd2+ Kh4 18.Qh6 Qb8 19.Qf8 Qb6 20.h6 Bh5 21.Nge2 Ng4++ 22.Kg1+ Bh2+ 23.Rxh2+ (partial C+ 21,5 coups Natch 2.4 in 15.66") last 4 single moves forced ! n/m=4/45=0.089 6th Place - Messigny 2009 ?ric PICHOURON & Michel CAILLAUD r1bq1bnr/ppp1p2p/5pp1/2kp2RQ/6K1/3P1PP1/PPP3P1/RNB2BN1 SPG in 11.0 moves (15+15) C+ last 3 single moves? 1.d3 Nc6 2.Kd2 Nd4 3.Ke3 Nxe2 4.Ke4 Ng3+ 5.hxg3 f6 6.Rh5 Kf7 7.Rg5 Ke6 8.Qh5 Kd6 9.Kf5 Kc5 10.f3 g6+ 11.Kg4+ d5+ (C+ Natch 2.4 in 1'32") last 3 single moves forced ! n/m=3/22=0.136 7th Place - Messigny 2009 Pascal WASSONG rnbqkb1r/pppp2p1/4p1n1/7B/3QP2K/5P1p/PPPPN1pP/RNB3R1 SPG in 12.0 moves (15+16) C+ last 3 single moves? 1.e4 f5 2.Be2 f4 3.Bg4 f3 4.Ne2 fxg2 5.f3 h5 6.Kf2 h4 7.Qg1 h3 8.Kg3 e6 9.Qd4 Ne7 10.Rg1 Rg8 11.Kh4 Rh8+ 12.Bh5+ Ng6++ (C+ Natch 2.4 in 1.10") last 3 single moves forced ! n/m=3/24=0.125 8th Place - Messigny 2009 Kostas PRENTOS & Andre? FROLKIN rnr5/p1P3pp/2p1p3/5b2/qb1p1kPN/3K4/PPPn1P2/R1BQ1BNR SPG in 18.0 moves (14+14) C+ last 3 single moves? 1.d4 Nf6 2.d5 Ne4 3.d6 Nc3 4.dxc7 d5 5.e4 Bf5 6.e5 Kd7 7.e6+ Kd6 8.exf7 e6 9.h4 Qxh4 10.Nd2 Qa4 11.Ndf3 d4 12.Nh4 Ke5 13.Kd2 Bb4 14.f8=Q Kf4 15.Qc5 Rc8 16.Qc6 bxc6 17.g4 Ne4++ 18.Kd3+ Nd2+ (C+ Natch 2.4 in 1'43") last 3 single moves forced ! n/m=3/36=0.083 9th Place - Messigny 2009 ?tienne DUPUIS 2kr2K1/pppq2p1/1n2pp2/3p1b1p/5r2/P4P2/P1PPPBPP/RN2QBNR SPG in 13.0 moves (16+14) C+ last single move? 1.f3 h5 2.Kf2 Rh6 3.Kg3 Rf6 4.Kh4 Rf4+ 5.Kg5 f6+ 6.Kg6 d5 7.Kh7 Bf5+ 8.Kxg8 e6 9.Qe1 Ba3 10.bxa3 Nd7 11.Bb2 Nb6 12.Bd4 Qd7 13.Bf2 OOO# (C+ Natch 2.4 in 0.27") last single move forced ! n/m=1/26=0,038 _________________________________________________________________ D?couvrez toutes les possibilit?s de communication avec vos proches http://www.microsoft.com/windows/windowslive/default.aspx -------------- next part -------------- An HTML attachment was scrubbed... URL: From raosorio at fibertel.com.ar Sat Jun 13 09:24:04 2009 From: raosorio at fibertel.com.ar (raosorio at fibertel.com.ar) Date: Sat, 13 Jun 2009 10:24:04 -0300 Subject: [Retros] Equal Last Move (ELM) - updating Message-ID: Dear friends, I'm sending here the updated list of ELM records. The changes compared to the last list (ending 2007) are marked here with "n)". I keep the complete presentation including the definition in order to make the things easy for newcomers. I've also included a fairy (LORTAP) one showing the e.p. case, wich is is not feasible with orthodox chess, neither ELM nor LMD. Both O-O and O-O-O cases are pending to be shown using some fairy stipulation. Madrasi seems to be a proper one; "Double Maximmumer" makes it (apparently) very easy both for ELM and even LMD but the problem to be solved is to bulid a legal position under this stipulation. Best, Roberto ------------------------------------------------------------------------------------------------------------------------------------ EQUAL LAST MOVE (ELM)- Definition Twinning a) white to move, b) black to move. Find the a) and b) "same nature" legal last move. The move's nature is determined by the type of the piece/pieces involved (K, Q, R, B, N, P) and the type of movement (simple, straight promotion, simple capture, capturing promotion, e.p., pawn double step, O-O, O-O-O). An ELM problem is not (in general) a Last Move type D one. The diagram could present many legal candidates to be the last move, but there is just one for a) and just one for b) that are of the same nature. On the contrary, all the Last Move type DD problems are particular ELM ones. There are 60 theorical cases (surely 57 in practice due to castlings and e.p. ??) We are trying here to find the economy records (minimal pieces number). On top of records, I think that this stipulation could be used to composse some nice problems with many tries. Some examples are a light variation of the previous Type B ones and they are indicated as such. Dates are reception ones, i) means improved from previous updating, and n) means new. I included the reference of the Last Move Type DD record (Type DD is the particular Type D cases where the last move is of the same nature both for WTM and BTM) in the form of DDxx, where xx is the number of pieces in the corresponding DD record. For instance, in the following first case the move is K-, after that DD12 indicates that the DD record uses 12 pieces, and after that (3+2=5) means that the ElM record uses 3 white pieces and 2 black pieces, total 5. Then, the FEN, author and reception date. K- DD12 (3+2=5) (8/8/8/6R1/7k/8/7K/6Rb) Bernd Schwarzkopf/9.05.2007 KxQ DD24 (1+11=12)(3nK2k/ppppp2p/4p2n/7p/8/8/8/8) Bernd Schwarzkopf/14.06.2007 KxR DD22 (3+3=6) (bK6/8/bk6/NP6/8/8/8/8) Bernd Schwarzkopf/9.05.2007 KxB DD14 (2+3=5) (K1k5/2rp4/2P5/8/8/8/8/8 ) Bernd Schwarzkopf, Werner Keym/9.05.2007 KxN DD10 (3+2=5) (K7/8/k7/P7/8/8/7b/6Q1) Bernd Schwarzkopf/9.05.2007 KxP DD24 (1+5=6) (8/8/8/1q1r4/k7/n1K5/5q2/8) Bernd Schwarzkopf/9.05.2007 Q- DD13 (5+4=9) (8/8/8/8/1p6/Pp6/qPP1k3/1QK5) Bernd Schwarzkopf 11.6.2007 QxQ DD?? (9+3=12) (8/8/8/8/8/4P1PP/1K1kPBPq/3N1Q1b) Bernd Schwarzkopf 22.06.2007 QxR DD?? (7+2=9) (8/8/8/8/1N6/kPP5/q1PP4/1QK5) Bernd Schwarzkopf/21.06.2007 QxB DD?? (7+3=10) (8/8/8/8/8/PK2B3/1pN1R3/QRqk4) Bernd Schwarzkopf 21.06.2007 QxN DD12 (5+2=7) (8/8/8/8/8/P7/1PP5/qQK1k3) Thierry Le Gleuher /14.05.07 n) QxP DD26 (7+4=11) (5KNk/5p1q/5P1Q/5PPP/6p1/8/8/8) Bernd Schwarzkopf & Werner Keym/13888 Die Schwalbe, X 2008, page 599 R- DD13 (5+3=8) (8/8/8/8/1p6/P7/rPP1k3/1RK5) Bernd Schwarzkopf/08.06.2007 RxQ DD17 (10+3=13) (8/8/8/8/8/P1P5/rP1PPPPP/kr1RK3) Bernd Schwarzkopf, Werner Keym/21.06.2007 RxR DD?? (8+2=10) (8/8/8/8/BPK5/1R1P4/BNk5/r1B5) Bernd Schwarzkopf, Roberto Osorio, Jorge Lois/21.06.2007 RXB DD18 (4+4=8) (8/8/8/8/1p6/p7/rPP1k3/1RK5) Bernd Schwarzkopf/08.06.2007 RXN DD9 (3+4=7) (8/8/8/8/8/np6/rP2k3/1RK5) Bernd Schwarzkopf/08.06.2007 RxP DD25 (6+2=8) (8/8/4K3/8/7P/4N1NR/5Pr1/6k1) Werner Keym/21.06.2007 B- DD12 (7+4=11) (8/8/1p6/b7/8/P2P4/P1kPP3/K1Bb4) Bernd Schwarzkopf/9.05.2007 BxQ DD24 (9+2=11) (8/8/6P1/4PPP1/7B/5P1P/5KPb/7k) Werner Keym/21.06.2007 BxR DD11 (2+6=8) (5b1B/4pK1k/5ppp/8/8/8/8/8) Bernd Schwarzkopf/21.06.2007 BxB DD27 (6+4=10) (4RBkb/3Pp2p/4KPP1/8/8/8/8/8) Bernd Schwarzkopf, Werner Keym/21.06.2007 BxN DD11 (6+2=8) (8/8/8/8/8/4P1PP/5BPb/4K2k) Bernd Schwarzkopf/06.06.2007 BxP DD26 (8+3=11) (8/8/6P1/6P1/3K1P1B/7N/5PPb/6nk) Werner Keym/21.06.2007 N- DD11 (5+2=7) (8/8/8/8/8/5K2/4PPPk/6Nn) Bernd Schwarzkopf/08.06.2007 NxQ DD17 (3+4=7) 6Nk/4p1Rn/4K2p/8/8/8/8/8 Bernd Schwarzkopf, Werner Keym/24.06.07 n) NxR DD16 (5+3=8) (6Nk/4pP1n/6KP/6P1/8/8/8/8) Bernd Schwarzkopf / 13456 (right side) Die Schwalbe, VIII 2007, page 201 n) NXB DD19 (4+4=8) (8/8/8/8/1P6/pk6/Nr1P4/Kn6) Bernd Schwarzkopf / 13456 (left side) Die Schwalbe, VIII 2007, page 201 NXN DD17 (5+3=8) (8/8/8/8/7P/4K1kP/6Pn/6Nb) Bernd Schwarzkopf/12.06.2007 n) NxP DD25 (7+3=10) (8/8/8/5P2/5KPn/7p/6PN/5BBk) Valentin Blacker/13524 Die Schwalbe, X 2007, page 257 P- DD8 (2+2=4) (8/8/8/8/8/6P1/7p/5K1k) Roberto Osorio/20.04.2007 P-- DD17 ( 3+3=6) (8/7p/7P/6pK/5k1P/8/8/8) Bernd Schwarzkopf/9.05.2007 PxQ DD24 (3+7=10) (8/8/8/8/4N1K1/5P1P/6Pp/4BkNb) Bernd Schwarzkopf/9.05.2007 PxR DD21 (7+2=9) (8/8/8/4KR2/7P/7P/6Pp/5BkN) Bernd Schwarzkopf/9.05.2007 PxB DD16 (6+2=8) (8/8/8/4KN2/7P/7P/6Pp/6Nk) Bernd Schwarzkopf/9.05.2007 PxN DD16 (5+2=7) (8/6K1/7P/8/8/7P/6Pp/6Nk) Bernd Schwarzkopf/9.05.2007 PxP DD18 (5+2=7) (8/4K3/8/8/7P/5N1N/6Pp/7k) Bernd Schwarzkopf, Werner Keym/9.05.2007 P-=Q DD20 (5+2=7) (7Q/8/8/7P/8/6K1/6P1/5Bkq) Bernd Schwarzkopf/9.05.2007 P-=R DD20 (5+2=7) (7R/8/8/8/8/6P1/5K1P/5Brk) Bernd Schwarzkopf/9.05.2007 P-=B DD10 (2+3=5) (7B/6p1/8/8/8/7K/8/6bk) Bernd Schwarzkopf/9.05.2007 P-=N DD16 (2+4=6) (7N/8/8/8/8/8/5pr1/3k1K1n) Bernd Schwarzkopf/9.05.2007 n)PxQ=Q DD24 (3+9=12) (nQr1B3/1ppKpp2/kp6/8/8/8/8/7q) Werner Keym / 13455 Die Schwalbe, VIII 2007, page 201 n) PxQ=R DD23 (4+6=10) (6R1/4pp2/5ppK/8/8/8/6R1/5Nrk) Bernd Schwarzkopf & Werner Keym 2009-03-11 PxQ=B DD25 (2+11=13) (2b1B3/pp1pp1p1/6p1/8/8/1k6/2rp4/bK6) Werner Keym/21.06.2007 n) PxQ=N DD24 (5+6=11) (6N1/4pp2/5ppK/8/8/6B1/6R1/5Bnk) Werner Keym & Bernd Schwarzkopf/new 2009-03-11 n)PxR=Q DD? (2+8=10) nQb5/Kp6/3p4/8/n7/1p6/2k5/q7 Werner Keym 18.6.2007 PxR=R DD?? (7+2=9) (7R/5K2/6P1/8/8/1P6/kP6/NrB5) Bernd Schwarzkopf/9.05.2007 PxR=B DD24 (2+8=10) (4rnBr/5Kp1/4r3/8/8/1p6/2k5/b7) Jorge Lois & Roberto Osorio/2.06.07 PxR=N DD24 (3+6=9) (5bNN/6pK/6p1/8/8/6p1/5k2/7n) Bernd Schwarzkopf/22.06.2007 PxB=Q DD26 (2+6=8) (5nQK/5pr1/8/8/8/1p6/2k5/q7) Jorge Lois & Roberto Osorio/14.06.07 PxB=R DD16 (5+2=7) (R7/2K5/1R6/8/8/P7/k7/rR6) Bernd Schwarzkopf/9.05.2007 PxB=B DD25 (2+6=8) (5nBK/5pr1/8/8/8/1p6/2k5/b7)Jorge Lois,Roberto Osorio & Werner Keym/23.06.07 n) PXB=N DD16 (4+3=7) (5+2=7) (7N/5K2/6R1/8/8/7P/7k/6Rn) Bernd Schwarzkopf/new 2009-03-10 PxN=Q DD23 (5+2=7) (5nQK/5pr1/8/8/8/8/2k5/1q6) Roberto Osorio & Jorge Lois/16.06.07 PxN=R DD14 (4+2=6) (1R6/2K5/8/8/8/P7/k7/rR6) Bernd Schwarzkopf/9.05.2007 n) PxN=B DD24 (2+7=9) (2+5=7) (5nBK/5pr1/8/8/8/8/2k5/1b6) Bernd Schwarzkopf & Roberto Osorio & Jorge Lois/new 2009-03-10 PxN=N DD22 (2+5=7) (6KN/5r1r/6n1/8/8/8/2k5/1n6) Jorge Lois & Roberto Osorio/2.06.07 PxP e.p. (7+4=11) (5R1k/4n1PP/5Pp1/8/8/6Kp/B7/B7) LORTAP CHESS/ Roberto Osorio /Tournoi de composition ISC 2008 ------------------------------------------------------------------------------------------------------------------------ From joost at sanguis.xs4all.nl Fri Jun 26 08:46:37 2009 From: joost at sanguis.xs4all.nl (Joost de Heer) Date: Fri, 26 Jun 2009 14:46:37 +0200 Subject: [Retros] Die Schwalbe Heft 237, Juni 2009 Message-ID: <4A44C32D.1060506@sanguis.xs4all.nl> 14123 - Unto Heinonen 3qkbsr/3ppppp/8/8/8/8/PPPPPP2/RSBQK3 (11+10) SPG 10.0 14124 - Alexei Gasparjan 4b2r/pQp2pb1/s2qppkp/5s2/8/3P3S/PPPP3P/RSB2RK1 (13+13) SPG 19.0 14125 - Bernd Gr?frath rsbq1bsr/p1p1pppp/3k4/3p4/8/QP6/2PPPPPP/KS3BSR (13+15) SPG 8.5, Madrasi 14126 - Henryk Grudzinski 1sbqkb1r/p1pppp2/8/8/8/8/P1PPP1PP/RS1QKBSR (13+11) SPG 9.5, Einstein 14127 - Ren? Jean Millour 1R6/P4P2/2K4P/5P2/8/1S4P1/2P5/sb1rkqbs (9+7) -8 & #1, Proca retractor, Marscirce 14129 - Werner Keym In an illegal cluster with (a) 2 white pieces and 2 black pieces (b) 3 white pieces and 1 black piece should the sum of the smallest distances between the diagram position and the origin square (either original or promotion) be as large as possible (example: Distance from origin square for a wBf4 is not sqrt(18) (distance to c1) but 4 (distance to f8). Original text: In einem Illegal Cluster mit (a) zwei wei?en Steinen und zwei schwarzen, (b) drei wei?en Steinen und einem schwarze soll die Summe der kleinsten Abst?nde der Standfelder der (vier) Steine zu inhren Partieanfangs- oder Umwandlungsfeldern m?glichst gro? sein. (Beispiel: F?r den wLf4 betr?gt der kleinste Abstand 4, n?mlich vron f4 bis f8, und nicht ca. 4,2 von f4 bis c1). SOLUTIONS HEFT 234 13940 - T?ngler 1.Kb4-a4 2.Bb1-c2 3.Bc2-d1 4.Bd1-e2 5.Be2-f1 6.Bf1-h3 7.Bh3-g4 8.Bg4-h5 9.Bh5-e8 10.Be8-d7 11.Bd7-c8 12.Bc8-a6 13.Ba6*b5 14.Bb5-a6 15.Ba6-c8 16.Bc8-d7 17.Bd7-e8 18.Be8-h5 19.Bh5-g4 20.Bg4-h3 21.Bh3-f1 22.Bf1-e2 23.Be2-d1 24.Bd1-b3 25.Ka4-b4 26.Kb4-c3 27.Bb3-c2 28.Kc3-d2 29.Kd2-d1 30.Bc2-a4 31.Ba4-b5 32.Bb5-a6 33.Ba6-c8 34.Bc8-d7 35.Bd7-e8 36.Be8-h5 37.Bh5-g4 38.Bg4-h3 39.Bh3-f1 40.Bf1-e2 41.Kd1-e1 42.Ke1-f1 43.Kf1-g2 44.Kg2-h3 45.Be2-d1 46.Bd1-a4 47.Ba4-b5 48.Bb5-a6 49.Ba6-c8 50.Bc8-d7 51.Bd7-e8 52.Be8-h5 53.Bh5-g4 54.Kh3-h4 55.Kh4-h5 56.Bg4-h3 57.Bh3-f1 58.Bf1-e2 59.Be2-d1 60.Bd1-a4 61.Ba4-b5 62.Bb5-a6 63.Ba6-c8 64.Bc8-d7 65.Bd7-e8 66.Be8-g6 67.Kh5-h6 68.Kh6-g7 69.Bg6-f7 70.Kg7-f8 71.Kf8-e8 72.Bf7-h5 73.Bh5-g4 74.Bg4-h3 75.Bh3-f1 76.Bf1-e2 77.Be2-d1 78.Bd1-a4 79.Ba4-b5 80.Bb5-a6 81.Ba6-c8 82.Bc8-d7 83.Ke8*d8 84.Kd8-e8 85.Bd7-c8 86.Bc8-a6 87.Ba6-b5 88.Bb5-a4 89.Ba4-d1 90.Bd1-e2 91.Be2-f1 92.Bf1-h3 93.Bh3-g4 94.Bg4-h5 95.Bh5-f7 96.Ke8-f8 97.Kf8-g7 98.Bf7-g6 99.Kg7-h6 100.Kh6-h5 101.Bg6-e8 102.Be8-d7 103.Bd7-c8 104.Bc8-a6 105.Ba6-b5 106.Bb5-a4 107.Ba4-d1 108.Bd1-e2 109.Be2-f1 110.Bf1-h3 111.Bh3-g4 112.Kh5-h4 113.Kh4-h3 114.Bg4-h5 115.Bh5-e8 116.Be8-d7 117.Bd7-c8 118.Bc8-a6 119.Ba6-b5 120.Bb5-a4 121.Ba4-d1 122.Bd1-e2 123.Kh3-g2 124.Kg2-f1 125.Kf1-e1 126.Ke1-d1 127.Be2-f1 128.Bf1-h3 129.Bh3-g4 130.Bg4-h5 131.Bh5-e8 132.Be8-d7 133.Bd7-c8 134.Bc8-a6 135.Ba6-b5 136.Bb5-a4 137.Ba4-c2 138.Kd1-d2 139.Kd2-c3 140.Bc2-b3 141.Kc3-b4 142.Kb4-a4 143.Bb3-d1 144.Bd1-e2 145.Be2-f1 146.Bf1-h3 147.Bh3-g4 148.Bg4-h5 149.Bh5-e8 150.Be8-d7 151.Bd7-c8 152.Bc8-a6 153.Ba6-b5 154.Ka4*a5 155.Ka5-a4 156.Bb5-a6 157.Ba6-c8 158.Bc8-d7 159.Bd7-e8 160.Be8-h5 161.Bh5-g4 162.Bg4-h3 163.Bh3-f1 164.Bf1-e2 165.Be2-d1 166.Bd1-b3 167.Ka4-b4 168.Kb4-c3 169.Bb3-c2 170.Kc3-d2 171.Kd2-d1 172.Bc2-a4 173.Ba4-b5 174.Bb5-a6 175.Ba6-c8 176.Bc8-d7 177.Bd7-e8 178.Be8-h5 179.Bh5-g4 180.Bg4-h3 181.Bh3-f1 182.Bf1-e2 183.Kd1-e1 184.Ke1-f1 185.Kf1-g2 186.Kg2-h3 187.Be2-d1 188.Bd1-a4 189.Ba4-b5 190.Bb5-a6 191.Ba6-c8 192.Bc8-d7 193.Bd7-e8 194.Be8-h5 195.Bh5-g4 196.Kh3-h4 197.Kh4-h5 198.Bg4-h3 199.Bh3-f1 200.Bf1-e2 201.Be2-d1 202.Bd1-a4 203.Ba4-b5 204.Bb5-a6 205.Ba6-c8 206.Bc8-d7 207.Bd7-e8 208.Be8-g6 209.Kh5-h6 210.Kh6-g7 211.Bg6-f7 212.Kg7-f8 213.Kf8-e8 214.Bf7-h5 215.Bh5-g4 216.Bg4-h3 217.Bh3-f1 218.Bf1-e2 219.Be2-d1 220.Bd1-a4 221.Ba4-b5 222.Bb5-a6 223.Ba6-c8 224.Bc8-d7 225.Ke8-d8 226.Kd8-c8 227.Bd7-e8 228.Be8-h5 229.Bh5-g4 230.Bg4-h3 231.Bh3-f1 232.Bf1-e2 233.Be2-d1 234.Bd1-b3 235.Kc8-b7 236.Kb7*a7 237.Ka7-b7 238.Kb7-c8 239.Bb3-d1 240.Bd1-e2 241.Be2-f1 242.Bf1-h3 243.Bh3-g4 244.Bg4-h5 245.Bh5-e8 246.Be8-d7 247.Kc8-d8 248.Kd8-e8 249.Bd7-c8 250.Bc8-a6 251.Ba6-b5 252.Bb5-a4 253.Ba4-d1 254.Bd1-e2 255.Be2-f1 256.Bf1-h3 257.Bh3-g4 258.Bg4-h5 259.Bh5-f7 260.Ke8-f8 261.Kf8-g7 262.Bf7-g6 263.Kg7-h6 264.Kh6-h5 265.Bg6-e8 266.Be8-d7 267.Bd7-c8 268.Bc8-a6 269.Ba6-b5 270.Bb5-a4 271.Ba4-d1 272.Bd1-e2 273.Be2-f1 274.Bf1-h3 275.Bh3-g4 276.Kh5-h4 277.Kh4-h3 278.Bg4-h5 279.Bh5-e8 280.Be8-d7 281.Bd7-c8 282.Bc8-a6 283.Ba6-b5 284.Bb5-a4 285.Ba4-d1 286.Bd1-e2 287.Kh3-g2 288.Kg2-f1 289.Kf1-e1 290.Ke1-d1 291.Be2-f1 292.Bf1-h3 293.Bh3-g4 294.Bg4-h5 295.Bh5-e8 296.Be8-d7 297.Bd7-c8 298.Bc8-a6 299.Ba6-b5 300.Bb5-a4 301.Ba4-c2 302.Kd1-d2 303.Kd2-c3 304.Bc2-b3 305.Kc3-b4 306.Kb4-a4 307.Bb3-d1 308.Bd1-e2 309.Be2-f1 310.Bf1-h3 311.Bh3-g4 312.Bg4-h5 313.Bh5-e8 314.Be8-d7 315.Bd7-c8 316.Bc8-a6 317.Ba6-b5 318.Ka4-a5 319.a3-a4 320.Be5-d4 13941 - le Gleuher Start from the following position: r3k2s/ppp1ppRb/3p2pK/5p2/1b3P1S/3P1P1B/PPP2PP1/4S1B1 1... O-O-O 2. Rg8 Kd7 3. Kg7 Ra8 4. Rc8 Rb8 5. Kf8 Ke6 6. Ke8 Kf6 7. Kd7 Ba5 8. Rg8 Bb4 9. Rg7 Bg8 10. Rh7 Ra8 11. Rh5 Bh7 12. Bh2 Rg8 13. Bg1 Kg7 14. Bh2 Kf8 15. Kc8 Ke8 16. Kb8 Kd8 17. Ka8 Kc8 18. Bg1 Rd8 19. Bh2 Bg8 20. Bg1 Rd7 21. Bh2 Kd8 22. Kb8 Ke8 23. Bg1 Kf8 24. Bh2 Kg7 25. Rh7+ Kf6 26. Rg7 Bh7 27. Rg8 Ba5 28. Rc8 Rd8 29. Bg1 Rg8 30. Bh2 Rg7 31. Rg8 Bb4 32. Kc8 Ba5 33. Kd8 Bb4 34. Ke8 Ke6 35. Kf8 Kd7 36. Bg1 Kc8 37. Ke8 Kb8 38. Rf8 Bg8 39. Kd8 Ka8 40. Kc8 Rh7 41. Rd8 Rh5 42. Rd7 Rg5 43. Kd8 Rg3 44. Bg4 Bh7 45. Ke8 Rh3 46. Kf8 Rh1 47. Kg7 Bc3+ 48. Kh6 Bg7+ 49. Kg5 Bf8 50. Bh2 Rf1 51. Bh3 So with black to move the position is legal (49.5 moves since castling). 1... O-O-O 2. Rg8 Kd7 3. Kg7 Ra8 4. Rc8 Rb8 5. Kf8 Ke6 6. Ke8 Kf6 7. Kd7 Ba5 8. Rg8 Bb4 9. Rg7 Bg8 10. Rh7 Ra8 11. Rh5 Bh7 12. Bh2 Rg8 13. Bg1 Kg7 14. Bh2 Kf8 15. Kc8 Ke8 16. Kb8 Kd8 17. Ka8 Kc8 18. Bg1 Rd8 19. Bh2 Bg8 20. Bg1 Rd7 21. Bh2 Kd8 22. Kb8 Ke8 23. Bg1 Kf8 24. Bh2 Kg7 25. Rh7+ Kf6 26. Rg7 Bh7 27. Rg8 Ba5 28. Rc8 Rd8 29. Bg1 Rg8 30. Bh2 Rg7 31. Rg8 Bb4 32. Kc8 Ba5 33. Kd8 Ke6 34. Ke8 Bb4 35. Kf8 Kd7 36. Bg1 Kc8 37. Ke8 Kb8 38. Rf8 Bg8 39. Kd8 Ka8 40. Kc8 Rh7 41. Rd8 Rh5 42. Rd7 Rg5 43. Kd8 Rg3 44. Bg4 Rh3 45. Ke8 Rh1 46. Bh3 Bh7 47. Kf8 Ba5 48. Kg7 Bc3+ 49. Kh6 Bg7+ 50. Kg5 Bf8 51. Bh2 Rf1 So with white move move the position is a draw (50.0 moves since castling). So #1 with 1...f6# and not 1.Rd8#? 13942 - Osorio, Lois 1. f4 e6 2. f5 Ba3 3. f6 Qe7 4. fxe7 f5 5. b4 Kf7 6. e8=N c5 7. Nc7 Nf6 8. Na6 bxa6 9. b5 Bb7 10. b6 Bf3 11. b7 Nc6 12. b8=N Ne7 13. Nc6 Rhb8 14. e4 Rb3 15. e5 Rc3 16. dxc3 dxc6 17. Be3 Nd7 18. Bf2 Nb8 19. Qd7 Kg6 20. Bd3 Ng8 Two white CF-knights, black knight swap. 13943 - Gr?frath 1. g4 d5 2. g5 Qd6 3. g6 Qxh2 4. gxf7+ Qxg1 5. fxe8=N Qxf1+ 6. Nxc7 Qxe1 7. Rxe1 e5 8. Nxd5 e4 9. Nf4 Nd7 10. Nh3 Ne5 11. Ng1 Knight Pronkin 13944 - Gr?frath a) 1. d3 Nc6 2. d4 Nxd4 3. Qxd4 d6 4. Qa4+ d5 5. Qxa7 d4 6. Qxa8 d3 7. Qa3 d2+ 8. Qf3 Qd3+ 9. c3 d1=R b) 1. d3 Nc6 2. d4 Nxd4 3. Qxd4 a6 4. Qxd7+ Ra7 5. Qd6 Qd7 6. Qxa6 Qd6 7. Qa3 Ra4 8. Qf3 Rd4 9. c3 Rd1 Pronkin rook vs original rook. 13945 - Heinonen 1. g3 d5 2. Bg2 Bg4 3. Be4 Sd7 4. Bh7[Bc8] Rh3 5. b3 Sh6 6. Sh3[Sg8] Sf6 7. OO Sh5 8. Re1 Be2[Bf1] 9. Re7[Rh8] Ba3 10. Sa3[Sb8] Ke7 11. f3 Kf6 12. Kf1[Ke8] Qd6 13. Qg1 Kg6 14. Qa7[Qd8] Ra3 15. Ba3[Bf8] Qg3[Qd1] 16. Rd1[Ra8] Kh7 White homebase on foreign grounds. 13946 - Weeth -1. Ra1*Bb1[Rh1] Qc8-b8 -2. c7*Bb8=R[Ra1] (thr: -3. b6-b7 & 1. Bb7 Qb7[Qd8]#) Rh1-h7! -3. Re6-e8 & 1. Bh1[Bf1] Qe6[Qd8]# Thematic tries: -2. c7*Sb8=R[Ra1]? and the black knight can uncapture something. -2. c7*Qb8=R[Ra1]? and no threat: -3. b6-b7 & 1. Bb7 Qbb7[Qd8] 2. Kc2 -2. Ra8*Rb8[Ra1]? Rd7-h7!! (no retro-check!) and the d-file is blocked: -3. b6-b7 & 1. Bb7 Qb7[Qd8] 2. Sc2! 13497 - Brobecker 1. c4 f5 2. Qa4 Kf7 3. Qd7 Kg6 4. Qc6 Qd6 5. Qc6-e8# 13498 - Brobecker 1. f4 e5 2. Kf2 Qf6 3. Kg3 Be7 4. fe5 d5 5. ed6ep Be7xPd6# 13499 - Keym wKg1 wRf1 wPa2 wPb2 wPe2 wPf2 / bKa1. After removing e2, the last moves were -1. OO Kb1*Sa1 The symmetric position wKc1 wRd1 wPd2 wPe2 wPg2/h3 wPh2 is a try: After removing e2, the position with the pawn on g2 is still illegal, and with the pawn on h3, the last two moves aren't exactly determined. 13950 - Keym The largest distance are the two positions wKb8 wBa7 bKg1 and wKg8 wBh7 bKb1 (sqrt(58)+sqrt(53) ~ 14.9 The second-largest is the unique position wKa8 wBa1 bKb2 with distance sqrt(65)+sqrt(45) ~ 14.8 From retromode at web.de Fri Jun 26 09:37:41 2009 From: retromode at web.de (=?iso-8859-15?Q?Bernd_Gr=E4frath?=) Date: Fri, 26 Jun 2009 15:37:41 +0200 Subject: [Retros] Die Schwalbe Heft 237, Juni 2009 Message-ID: <1687067331@web.de> Hi there, I would like to correct a small mistake in the comment to the solution of my 13944: It should read "PHOENIX rook vs original rook". Best wishes, Bernd > -----Urspr?ngliche Nachricht----- > Von: "Joost de Heer" > Gesendet: 26.06.09 14:55:39 > An: The Retrograde Analysis Mailing List > Betreff: [Retros] Die Schwalbe Heft 237, Juni 2009 > 14123 - Unto Heinonen > 3qkbsr/3ppppp/8/8/8/8/PPPPPP2/RSBQK3 (11+10) > SPG 10.0 > > 14124 - Alexei Gasparjan > 4b2r/pQp2pb1/s2qppkp/5s2/8/3P3S/PPPP3P/RSB2RK1 (13+13) > SPG 19.0 > > 14125 - Bernd Gr?frath > rsbq1bsr/p1p1pppp/3k4/3p4/8/QP6/2PPPPPP/KS3BSR (13+15) > SPG 8.5, Madrasi > > 14126 - Henryk Grudzinski > 1sbqkb1r/p1pppp2/8/8/8/8/P1PPP1PP/RS1QKBSR (13+11) > SPG 9.5, Einstein > > 14127 - Ren? Jean Millour > 1R6/P4P2/2K4P/5P2/8/1S4P1/2P5/sb1rkqbs (9+7) > -8 & #1, Proca retractor, Marscirce > > 14129 - Werner Keym > In an illegal cluster with (a) 2 white pieces and 2 black pieces (b) 3 > white pieces and 1 black piece should the sum of the smallest distances > between the diagram position and the origin square (either original or > promotion) be as large as possible (example: Distance from origin square > for a wBf4 is not sqrt(18) (distance to c1) but 4 (distance to f8). > Original text: In einem Illegal Cluster mit (a) zwei wei?en Steinen und > zwei schwarzen, (b) drei wei?en Steinen und einem schwarze soll die > Summe der kleinsten Abst?nde der Standfelder der (vier) Steine zu inhren > Partieanfangs- oder Umwandlungsfeldern m?glichst gro? sein. (Beispiel: > F?r den wLf4 betr?gt der kleinste Abstand 4, n?mlich vron f4 bis f8, und > nicht ca. 4,2 von f4 bis c1). > > SOLUTIONS HEFT 234 > > 13940 - T?ngler > > 1.Kb4-a4 2.Bb1-c2 3.Bc2-d1 4.Bd1-e2 5.Be2-f1 6.Bf1-h3 > 7.Bh3-g4 8.Bg4-h5 9.Bh5-e8 10.Be8-d7 11.Bd7-c8 12.Bc8-a6 > 13.Ba6*b5 14.Bb5-a6 15.Ba6-c8 16.Bc8-d7 17.Bd7-e8 18.Be8-h5 > 19.Bh5-g4 20.Bg4-h3 21.Bh3-f1 22.Bf1-e2 23.Be2-d1 24.Bd1-b3 > 25.Ka4-b4 26.Kb4-c3 27.Bb3-c2 28.Kc3-d2 29.Kd2-d1 30.Bc2-a4 > 31.Ba4-b5 32.Bb5-a6 33.Ba6-c8 34.Bc8-d7 35.Bd7-e8 36.Be8-h5 > 37.Bh5-g4 38.Bg4-h3 39.Bh3-f1 40.Bf1-e2 41.Kd1-e1 42.Ke1-f1 > 43.Kf1-g2 44.Kg2-h3 45.Be2-d1 46.Bd1-a4 47.Ba4-b5 48.Bb5-a6 > 49.Ba6-c8 50.Bc8-d7 51.Bd7-e8 52.Be8-h5 53.Bh5-g4 54.Kh3-h4 > 55.Kh4-h5 56.Bg4-h3 57.Bh3-f1 58.Bf1-e2 59.Be2-d1 60.Bd1-a4 > 61.Ba4-b5 62.Bb5-a6 63.Ba6-c8 64.Bc8-d7 65.Bd7-e8 66.Be8-g6 > 67.Kh5-h6 68.Kh6-g7 69.Bg6-f7 70.Kg7-f8 71.Kf8-e8 72.Bf7-h5 > 73.Bh5-g4 74.Bg4-h3 75.Bh3-f1 76.Bf1-e2 77.Be2-d1 78.Bd1-a4 > 79.Ba4-b5 80.Bb5-a6 81.Ba6-c8 82.Bc8-d7 83.Ke8*d8 84.Kd8-e8 > 85.Bd7-c8 86.Bc8-a6 87.Ba6-b5 88.Bb5-a4 89.Ba4-d1 90.Bd1-e2 > 91.Be2-f1 92.Bf1-h3 93.Bh3-g4 94.Bg4-h5 95.Bh5-f7 96.Ke8-f8 > 97.Kf8-g7 98.Bf7-g6 99.Kg7-h6 100.Kh6-h5 101.Bg6-e8 102.Be8-d7 > 103.Bd7-c8 104.Bc8-a6 105.Ba6-b5 106.Bb5-a4 107.Ba4-d1 108.Bd1-e2 > 109.Be2-f1 110.Bf1-h3 111.Bh3-g4 112.Kh5-h4 113.Kh4-h3 114.Bg4-h5 > 115.Bh5-e8 116.Be8-d7 117.Bd7-c8 118.Bc8-a6 119.Ba6-b5 120.Bb5-a4 > 121.Ba4-d1 122.Bd1-e2 123.Kh3-g2 124.Kg2-f1 125.Kf1-e1 126.Ke1-d1 > 127.Be2-f1 128.Bf1-h3 129.Bh3-g4 130.Bg4-h5 131.Bh5-e8 132.Be8-d7 > 133.Bd7-c8 134.Bc8-a6 135.Ba6-b5 136.Bb5-a4 137.Ba4-c2 138.Kd1-d2 > 139.Kd2-c3 140.Bc2-b3 141.Kc3-b4 142.Kb4-a4 143.Bb3-d1 144.Bd1-e2 > 145.Be2-f1 146.Bf1-h3 147.Bh3-g4 148.Bg4-h5 149.Bh5-e8 150.Be8-d7 > 151.Bd7-c8 152.Bc8-a6 153.Ba6-b5 154.Ka4*a5 155.Ka5-a4 156.Bb5-a6 > 157.Ba6-c8 158.Bc8-d7 159.Bd7-e8 160.Be8-h5 161.Bh5-g4 162.Bg4-h3 > 163.Bh3-f1 164.Bf1-e2 165.Be2-d1 166.Bd1-b3 167.Ka4-b4 168.Kb4-c3 > 169.Bb3-c2 170.Kc3-d2 171.Kd2-d1 172.Bc2-a4 173.Ba4-b5 174.Bb5-a6 > 175.Ba6-c8 176.Bc8-d7 177.Bd7-e8 178.Be8-h5 179.Bh5-g4 180.Bg4-h3 > 181.Bh3-f1 182.Bf1-e2 183.Kd1-e1 184.Ke1-f1 185.Kf1-g2 186.Kg2-h3 > 187.Be2-d1 188.Bd1-a4 189.Ba4-b5 190.Bb5-a6 191.Ba6-c8 192.Bc8-d7 > 193.Bd7-e8 194.Be8-h5 195.Bh5-g4 196.Kh3-h4 197.Kh4-h5 198.Bg4-h3 > 199.Bh3-f1 200.Bf1-e2 201.Be2-d1 202.Bd1-a4 203.Ba4-b5 204.Bb5-a6 > 205.Ba6-c8 206.Bc8-d7 207.Bd7-e8 208.Be8-g6 209.Kh5-h6 210.Kh6-g7 > 211.Bg6-f7 212.Kg7-f8 213.Kf8-e8 214.Bf7-h5 215.Bh5-g4 216.Bg4-h3 > 217.Bh3-f1 218.Bf1-e2 219.Be2-d1 220.Bd1-a4 221.Ba4-b5 222.Bb5-a6 > 223.Ba6-c8 224.Bc8-d7 225.Ke8-d8 226.Kd8-c8 227.Bd7-e8 228.Be8-h5 > 229.Bh5-g4 230.Bg4-h3 231.Bh3-f1 232.Bf1-e2 233.Be2-d1 234.Bd1-b3 > 235.Kc8-b7 236.Kb7*a7 237.Ka7-b7 238.Kb7-c8 239.Bb3-d1 240.Bd1-e2 > 241.Be2-f1 242.Bf1-h3 243.Bh3-g4 244.Bg4-h5 245.Bh5-e8 246.Be8-d7 > 247.Kc8-d8 248.Kd8-e8 249.Bd7-c8 250.Bc8-a6 251.Ba6-b5 252.Bb5-a4 > 253.Ba4-d1 254.Bd1-e2 255.Be2-f1 256.Bf1-h3 257.Bh3-g4 258.Bg4-h5 > 259.Bh5-f7 260.Ke8-f8 261.Kf8-g7 262.Bf7-g6 263.Kg7-h6 264.Kh6-h5 > 265.Bg6-e8 266.Be8-d7 267.Bd7-c8 268.Bc8-a6 269.Ba6-b5 270.Bb5-a4 > 271.Ba4-d1 272.Bd1-e2 273.Be2-f1 274.Bf1-h3 275.Bh3-g4 276.Kh5-h4 > 277.Kh4-h3 278.Bg4-h5 279.Bh5-e8 280.Be8-d7 281.Bd7-c8 282.Bc8-a6 > 283.Ba6-b5 284.Bb5-a4 285.Ba4-d1 286.Bd1-e2 287.Kh3-g2 288.Kg2-f1 > 289.Kf1-e1 290.Ke1-d1 291.Be2-f1 292.Bf1-h3 293.Bh3-g4 294.Bg4-h5 > 295.Bh5-e8 296.Be8-d7 297.Bd7-c8 298.Bc8-a6 299.Ba6-b5 300.Bb5-a4 > 301.Ba4-c2 302.Kd1-d2 303.Kd2-c3 304.Bc2-b3 305.Kc3-b4 306.Kb4-a4 > 307.Bb3-d1 308.Bd1-e2 309.Be2-f1 310.Bf1-h3 311.Bh3-g4 312.Bg4-h5 > 313.Bh5-e8 314.Be8-d7 315.Bd7-c8 316.Bc8-a6 317.Ba6-b5 318.Ka4-a5 > 319.a3-a4 320.Be5-d4 > > 13941 - le Gleuher > > Start from the following position: > r3k2s/ppp1ppRb/3p2pK/5p2/1b3P1S/3P1P1B/PPP2PP1/4S1B1 > 1... O-O-O 2. Rg8 Kd7 3. Kg7 Ra8 4. Rc8 Rb8 5. Kf8 Ke6 6. Ke8 Kf6 7. Kd7 > Ba5 8. Rg8 Bb4 9. Rg7 Bg8 10. Rh7 Ra8 11. Rh5 Bh7 12. Bh2 Rg8 13. Bg1 > Kg7 14. Bh2 Kf8 15. Kc8 Ke8 16. Kb8 Kd8 17. Ka8 Kc8 18. Bg1 Rd8 19. Bh2 > Bg8 20. Bg1 Rd7 21. Bh2 Kd8 22. Kb8 Ke8 23. Bg1 Kf8 24. Bh2 Kg7 25. Rh7+ > Kf6 26. Rg7 Bh7 27. Rg8 Ba5 28. Rc8 Rd8 29. Bg1 Rg8 30. Bh2 Rg7 31. Rg8 > Bb4 32. Kc8 Ba5 33. Kd8 Bb4 34. Ke8 Ke6 35. Kf8 Kd7 36. Bg1 Kc8 37. Ke8 > Kb8 38. Rf8 Bg8 39. Kd8 Ka8 40. Kc8 Rh7 41. Rd8 Rh5 42. Rd7 Rg5 43. Kd8 > Rg3 44. Bg4 Bh7 45. Ke8 Rh3 46. Kf8 Rh1 47. Kg7 Bc3+ 48. Kh6 Bg7+ 49. > Kg5 Bf8 50. Bh2 Rf1 51. Bh3 > So with black to move the position is legal (49.5 moves since castling). > > 1... O-O-O 2. Rg8 Kd7 3. Kg7 Ra8 4. Rc8 Rb8 5. Kf8 Ke6 6. Ke8 Kf6 7. Kd7 > Ba5 8. Rg8 Bb4 9. Rg7 Bg8 10. Rh7 Ra8 11. Rh5 Bh7 12. Bh2 Rg8 13. Bg1 > Kg7 14. Bh2 Kf8 15. Kc8 Ke8 16. Kb8 Kd8 17. Ka8 Kc8 18. Bg1 Rd8 19. Bh2 > Bg8 20. Bg1 Rd7 21. Bh2 Kd8 22. Kb8 Ke8 23. Bg1 Kf8 24. Bh2 Kg7 25. Rh7+ > Kf6 26. Rg7 Bh7 27. Rg8 Ba5 28. Rc8 Rd8 29. Bg1 Rg8 30. Bh2 Rg7 31. Rg8 > Bb4 32. Kc8 Ba5 33. Kd8 Ke6 34. Ke8 Bb4 35. Kf8 Kd7 36. Bg1 Kc8 37. Ke8 > Kb8 38. Rf8 Bg8 39. Kd8 Ka8 40. Kc8 Rh7 41. Rd8 Rh5 42. Rd7 Rg5 43. Kd8 > Rg3 44. Bg4 Rh3 45. Ke8 Rh1 46. Bh3 Bh7 47. Kf8 Ba5 48. Kg7 Bc3+ 49. Kh6 > Bg7+ 50. Kg5 Bf8 51. Bh2 Rf1 > So with white move move the position is a draw (50.0 moves since castling). > > So #1 with 1...f6# and not 1.Rd8#? > > 13942 - Osorio, Lois > 1. f4 e6 2. f5 Ba3 3. f6 Qe7 4. fxe7 f5 5. b4 Kf7 6. e8=N c5 7. Nc7 Nf6 > 8. Na6 bxa6 9. b5 Bb7 10. b6 Bf3 11. b7 Nc6 12. b8=N Ne7 13. Nc6 Rhb8 > 14. e4 Rb3 15. e5 Rc3 16. dxc3 dxc6 17. Be3 Nd7 18. Bf2 Nb8 19. Qd7 Kg6 > 20. Bd3 Ng8 > Two white CF-knights, black knight swap. > > 13943 - Gr?frath > 1. g4 d5 2. g5 Qd6 3. g6 Qxh2 4. gxf7+ Qxg1 5. fxe8=N Qxf1+ 6. Nxc7 Qxe1 > 7. Rxe1 e5 8. Nxd5 e4 9. Nf4 Nd7 10. Nh3 Ne5 11. Ng1 > Knight Pronkin > > 13944 - Gr?frath > a) 1. d3 Nc6 2. d4 Nxd4 3. Qxd4 d6 4. Qa4+ d5 5. Qxa7 d4 6. Qxa8 d3 7. > Qa3 d2+ 8. Qf3 Qd3+ 9. c3 d1=R > b) 1. d3 Nc6 2. d4 Nxd4 3. Qxd4 a6 4. Qxd7+ Ra7 5. Qd6 Qd7 6. Qxa6 Qd6 > 7. Qa3 Ra4 8. Qf3 Rd4 9. c3 Rd1 > Pronkin rook vs original rook. > > 13945 - Heinonen > 1. g3 d5 2. Bg2 Bg4 3. Be4 Sd7 4. Bh7[Bc8] Rh3 5. b3 Sh6 6. Sh3[Sg8] Sf6 > 7. OO Sh5 8. Re1 Be2[Bf1] 9. Re7[Rh8] Ba3 10. Sa3[Sb8] Ke7 11. f3 Kf6 > 12. Kf1[Ke8] Qd6 13. Qg1 Kg6 14. Qa7[Qd8] Ra3 15. Ba3[Bf8] Qg3[Qd1] 16. > Rd1[Ra8] Kh7 > White homebase on foreign grounds. > > 13946 - Weeth > -1. Ra1*Bb1[Rh1] Qc8-b8 -2. c7*Bb8=R[Ra1] (thr: -3. b6-b7 & 1. Bb7 > Qb7[Qd8]#) Rh1-h7! -3. Re6-e8 & 1. Bh1[Bf1] Qe6[Qd8]# > > Thematic tries: > -2. c7*Sb8=R[Ra1]? and the black knight can uncapture something. > -2. c7*Qb8=R[Ra1]? and no threat: -3. b6-b7 & 1. Bb7 Qbb7[Qd8] 2. Kc2 > -2. Ra8*Rb8[Ra1]? Rd7-h7!! (no retro-check!) and the d-file is blocked: > -3. b6-b7 & 1. Bb7 Qb7[Qd8] 2. Sc2! > > 13497 - Brobecker > 1. c4 f5 2. Qa4 Kf7 3. Qd7 Kg6 4. Qc6 Qd6 5. Qc6-e8# > > 13498 - Brobecker > 1. f4 e5 2. Kf2 Qf6 3. Kg3 Be7 4. fe5 d5 5. ed6ep Be7xPd6# > > 13499 - Keym > wKg1 wRf1 wPa2 wPb2 wPe2 wPf2 / bKa1. After removing e2, the last moves > were -1. OO Kb1*Sa1 > The symmetric position wKc1 wRd1 wPd2 wPe2 wPg2/h3 wPh2 is a try: After > removing e2, the position with the pawn on g2 is still illegal, and with > the pawn on h3, the last two moves aren't exactly determined. > > 13950 - Keym > The largest distance are the two positions wKb8 wBa7 bKg1 and wKg8 wBh7 > bKb1 (sqrt(58)+sqrt(53) ~ 14.9 > The second-largest is the unique position wKa8 wBa1 bKb2 with distance > sqrt(65)+sqrt(45) ~ 14.8 > > _______________________________________________ > Retros mailing list > Retros at janko.at > http://www.pairlist.net/mailman/listinfo/retros > ______________________________________________________ GRATIS f?r alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de From joost at sanguis.xs4all.nl Fri Jun 26 10:10:50 2009 From: joost at sanguis.xs4all.nl (Joost de Heer) Date: Fri, 26 Jun 2009 16:10:50 +0200 Subject: [Retros] Die Schwalbe Heft 237, Juni 2009 In-Reply-To: <1687067331@web.de> References: <1687067331@web.de> Message-ID: <4A44D6EA.1070803@sanguis.xs4all.nl> >> 14127 - Ren? Jean Millour >> 14129 - Werner Keym Of course there is an 14128 too, I just forgot it: 14128 - Valentin Blacker 8/8/8/8/8/8/5PPk/4KR1r (4+2) ELM? From joost at sanguis.xs4all.nl Sat Jun 27 10:13:41 2009 From: joost at sanguis.xs4all.nl (Joost de Heer) Date: Sat, 27 Jun 2009 16:13:41 +0200 Subject: [Retros] Die Schwalbe Heft 237, Juni 2009 In-Reply-To: <4A44C32D.1060506@sanguis.xs4all.nl> References: <4A44C32D.1060506@sanguis.xs4all.nl> Message-ID: <4A462915.3030504@sanguis.xs4all.nl> > 14124 - Alexei Gasparjan > 4b2r/pQp2pb1/s2qppkp/5s2/8/3P3S/PPPP3P/RSB2RK1 (13+13) > SPG 19.0 Natch cooked this within seconds. Is this a misprint or did Thomas forget to check it? 1.Ch3 h5 2.f4 h4 3.f5 Ch6 4.f6 Cf5 5.g3 Ca6 6.Fg2 ??f6 7.Fd5 D?7 8.F?6 d??6 9.g?h4 Fd7 10.h5 Td8 11.h6 g?h6 12.Rf1 Fg7 13.R?1 Rf8 14.Rf2 F?8 15.Tf1 Rg8 16.Rg1 Td3 17.??d3 Dd6 18.Df3 Rh7 19.D?b7 Rg6 Joost From t.brand at gmx.net Sat Jun 27 11:16:02 2009 From: t.brand at gmx.net (Thomas Brand) Date: Sat, 27 Jun 2009 17:16:02 +0200 Subject: [Retros] Die Schwalbe Heft 237, Juni 2009 In-Reply-To: <4A462915.3030504@sanguis.xs4all.nl> References: <4A44C32D.1060506@sanguis.xs4all.nl> <4A462915.3030504@sanguis.xs4all.nl> Message-ID: <4A4637B2.20904@gmx.net> Alas, it is both... The problem (14124, Die Schwalbe June 2009) is misprinted (add bPe7) -- and I missed for any reason the standard natch test: now natch cooked the correct version within a few seconds, too! Sorry to all solvers and best regards, Thomas ---------------------- Joost de Heer schrieb: >> 14124 - Alexei Gasparjan >> 4b2r/pQp2pb1/s2qppkp/5s2/8/3P3S/PPPP3P/RSB2RK1 (13+13) >> SPG 19.0 > > Natch cooked this within seconds. Is this a misprint or did Thomas > forget to check it? > > 1.Ch3 h5 2.f4 h4 3.f5 Ch6 4.f6 Cf5 5.g3 Ca6 6.Fg2 ??f6 7.Fd5 D?7 8.F?6 > d??6 9.g?h4 Fd7 10.h5 Td8 11.h6 g?h6 12.Rf1 Fg7 13.R?1 Rf8 14.Rf2 F?8 > 15.Tf1 Rg8 16.Rg1 Td3 17.??d3 Dd6 18.Df3 Rh7 19.D?b7 Rg6 > > Joost > _______________________________________________ > Retros mailing list > Retros at janko.at > http://www.pairlist.net/mailman/listinfo/retros