Author: Dann Corbit
Date: 18:03:44 11/03/03
Go up one level in this thread
On November 03, 2003 at 18:03:21, martin fierz wrote: >i'm using ECM98 for testing purposes, and i found two positions with alternate >solutions (i think): > >ECM.018 bm Nxd6 > >[D]r3rbk1/1pq2ppp/2ppbnn1/p3p3/P1PPN3/BP1BPN1P/2Q2PP1/R2R2K1 w - - 0 1 > >intended solution: 1.Nxd6 Bxd6 2.Bxd6 Qxd6 3.dxe5 +- >alternate solution: 1.Bxd6 Bxd6 2.Nxd6 transposes Reduced the set to the ones that might be solutions (1st 5 have possibilities): [D]r3rbk1/1pq2ppp/2pNbnn1/p3p3/P1PP4/BP1BPN1P/2Q2PP1/R2R2K1 b - - acd 14; acn 32231888; acs 61; ce -127; pv Bxd6 Bxd6 Qxd6 dxe5 Qe7 exf6 Qxf6 Nd4 Rad8 Nxe6; [D]r3rbk1/1pq2ppp/2pBbnn1/p3p3/P1PPN3/1P1BPN1P/2Q2PP1/R2R2K1 b - - acd 14; acn 33413099; acs 60; ce -118; pv Bxd6 Nxd6 Qxd6 dxe5 Qe7 exf6 Qxf6 Nd4 Rad8 Rac1 Qe5 c5 Rd5 Qc4; [D]r3rbk1/1pq2ppp/2ppbnn1/p3p1N1/P1PPN3/BP1BP2P/2Q2PP1/R2R2K1 b - - acd 12; acn 26520989; acs 61; ce -85; pv Nxe4 Nxe6 Rxe6 Bxe4 exd4 Bf5 dxe3 Bxe6 exf2+ Qxf2 fxe6 Rf1 Re8 Bb2; [D]r3rbk1/1pq2ppp/2ppbNn1/p3p3/P1PP4/BP1BPN1P/2Q2PP1/R2R2K1 b - - acd 12; acn 26804085; acs 60; ce -83; pv gxf6 h4 Bg4 Bf5 Bxf5 Qxf5 Qc8 Qxc8 Raxc8 h5 Nh8 dxe5 dxe5; [D]r3rbk1/1pq2ppp/2ppbnn1/p3p1N1/P1PP4/BP1BPN1P/2Q2PP1/R2R2K1 b - - acd 12; acn 22631131; acs 61; ce -81; pv Bd7 dxe5 dxe5 c5 Rad8 Bb2 Bc8 Bc4 Nd5 Rac1 f6 Ne4; r3rbk1/1pq2ppp/2ppbnn1/p3P3/P1P1N3/BP1BPN1P/2Q2PP1/R2R2K1 b - - acd 12; acn 30422132; acs 61; ce -79; pv Nxe4 Bxe4 dxe5 Bb2 Bc8 c5 Qe7 Rac1 Qf6 Nd2 Qh4 Nf3 Qf6; r3rbk1/1pq2ppp/2ppbnn1/p2Pp3/P1P1N3/BP1BPN1P/2Q2PP1/R2R2K1 b - - acd 13; acn 28565012; acs 60; ce -68; pv cxd5 Nxf6+ gxf6 cxd5 Qxc2 Bxc2 Bd7 g4 e4 Nd4 Rac8 Rac1 Nh4 Bb2 Bg7; r3rbk1/1pq2ppp/2ppbnn1/p3p3/P1PPN3/1P1BPN1P/1BQ2PP1/R2R2K1 b - - acd 12; acn 26248015; acs 62; ce -67; pv Nxe4 Bxe4 exd4 Nxd4 Bd7 Rac1 Qc8 Bc3 b6 Bd3 Re5 Nf3 Rh5 Be4; >ECM.614 bm Qxf7+ > >[D]5r2/pp1RRrk1/4Qq1p/1PP3p1/8/4B3/1b3P1P/6K1 w - - 0 1 > >intended solution: 1.Qxf7+ Rxf7 2.Rxf7+ Qxf7 3.c6! bc6 4.bc6 Be5 5.Bd4! +- >alternate solution: 1.Rxf7 Rxf7 2.Qxf7+ Qxf7 transposes Reduced the set to the ones that might be solutions (1st 3 look very good): [D]5r2/pp1RRQk1/5q1p/1PP3p1/8/4B3/1b3P1P/6K1 b - - acd 17; acn 37004728; acs 60; ce -426; pv Rxf7 Rxf7+ Qxf7 c6 bxc6 bxc6 Be5 Bd4 Bxd4 Rxf7+ Kxf7 c7 Bb6 c8=Q Kf6 Qh8+ Kg6 Kg2 h5 Qe8+ Kh6 Qe6+ Kg7 Kf3; [D]5r2/pp1R1Rk1/4Qq1p/1PP3p1/8/4B3/1b3P1P/6K1 b - - acd 15; acn 38578370; acs 60; ce -409; pv Rxf7 Qxf7+ Qxf7 c6 bxc6 bxc6 Be5 Bd4 Bxd4 Rxf7+ Kxf7 c7 Bb6 c8=Q Kf6 Qc6+ Kg7 Qd7+ Kg6 Qd6+ Kh5 Kg2 g4; [D]5r2/pp1RRrk1/5q1p/1PP3p1/4Q3/4B3/1b3P1P/6K1 b - - acd 12; acn 34871769; acs 60; ce -336; pv Rxe7 Rxe7+ Rf7 Rxb7 Be5 Rxf7+ Kxf7 c6 Qd6 Bxa7 Bxh2+ Kg2 Bf4 Qc4+ Kf6 b6; 5r2/pp1RRrk1/5Q1p/1PP3p1/8/4B3/1b3P1P/6K1 b - - acd 14; acn 33957620; acs 61; ce -47; pv Bxf6 Rxf7+ Rxf7 Rd3 Be5 Ra3 Bb8 c6 bxc6 bxc6 Kg6 Kg2 Kf5 f3 Re7 Ra5+ Re5 Rc5 Rxc5 Bxc5; 5r2/pp1RRrk1/3Q1q1p/1PP3p1/8/4B3/1b3P1P/6K1 b - - acd 13; acn 34133392; acs 61; ce -13; pv Qxd6 Rxf7+ Rxf7 Rxd6 Be5 Rd5 Bc7 Rd3 a6 h4 gxh4 c6 axb5 Bd4+ Kg6 cxb7 Bb8; >am i missing something? is anybody still maintaining ECM98 officially? did i >download an old version of this? is there a newer version? questions, questions >:-) > >i got my version of ECM98 on scott gasch's monsoon site: >http://wannabe.guru.org/scott/hobbies/chess/ECM.EPD > >cheers > martin
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