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Subject: Re: MTD is a big win. - about 180 verified ECM positions

Author: Vincent Lejeune

Date: 16:58:02 07/20/99

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On July 20, 1999 at 15:06:25, Don Dailey wrote:


[...]


>By the way, what is the state  of the ECM problems?  Is there a subset
>of  them available that  have been  culled and  de-cooked that  are in
>common usage?
>
>- Don

Last year Howard Exner had sent me a subset (about 180) of verified ECM
positions:

1r5r/3b1pk1/3p1np1/p1qPp3/p1N1PbP1/2P2PN1/1PB1Q1K1/R3R3 b - - bm Nxg4; id
"ECM.011";
2r2bk1/4qp2/3n2p1/2R1p1Np/2p1N3/r6P/1Q3PP1/3R2K1 w - - bm Rxc8; id "ECM.035";
r1b1rnk1/1p3pb1/1qpp2p1/2n5/2PNP2p/1PN3PP/3R1PBK/BR1Q4 b - - bm Rxa1; id
"ECM.039";
3rnr1k/pp3ppp/4b3/2p1qNP1/P2pPR2/1P1P2Q1/2P3BP/5RK1 w - - bm Nh6; id "ECM.075";
5r1k/pb2r1bp/1p2B1p1/n7/4qNQ1/4B3/P4PPP/2RR2K1 w - - bm Rd4; id "ECM.080";
4r1k1/1b4pp/p7/1prP3q/2P1B3/5P2/P3Q2P/3RR2K w - - bm Bg6; id "ECM.084";
r1b1Q3/6pk/p6p/1pq1n3/4N3/8/PPP3PP/R6K b - - bm Qc6; id "ECM.112";
r1bn1rk1/pp3p1p/6p1/2bR2N1/2B2B2/q1P1P3/2Q2PPP/4K2R w K - bm Nxh7; id "ECM.115";
rn2qbr1/2p4k/p2p1nb1/1p1Pp2p/2P4P/2NBBPN1/PP1Q4/2KR2R1 w - - bm Nxh5; id
"ECM.128";
r1bq1rk1/pp2bp1p/2p2np1/3p2B1/3P4/2NQ2N1/PPP2PPP/4RRK1 w - - bm Rxe7; id
"ECM.130";
2rq1rk1/pp2bppp/1npp1n2/3PpN1b/2P5/2N3PP/PP2PPB1/R1BQ1RK1 w - - bm c5; id
"ECM.131";
2k3r1/pp2rp2/1np5/2Np1p2/P2P3p/1R2P1Pq/2Q2P1P/1R4K1 w - - bm Nxb7; id "ECM.135";
b3r3/q2B2k1/3Q2p1/1p5p/3pP3/5P2/1p4PP/5RK1 b - - bm d3+; id "ECM.142";
8/p3q1kp/1p2Pnp1/3pQ3/2pP4/1nP3N1/1B4PP/6K1 w - - bm Ba3; id "ECM.146";
r2b1rk1/5qp1/2p2P2/2p3Pp/p6P/2Q5/PPP5/2KR2R1 w - - bm g6; id "ECM.147";
4r3/Q2bppkp/3p2p1/3Nn3/4P3/6PP/1qr2PB1/R3R1K1 b - - bm Ra8; id "ECM.155";
8/p5Q1/2ppq2p/3n1ppk/3B4/2P2P1P/P5P1/6K1 w - - bm g4+; id "ECM.158";
3R4/1p2kp2/p1b1nN2/6p1/8/6BP/2r1qPPK/Q7 w - - bm Rd7+; id "ECM.162";
r1b4r/pp2ppk1/2np1np1/3N3p/2B1P3/q3BP2/P1PQ2PP/1R3RK1 w - - bm Nxe7; id
"ECM.187";
5rk1/Q2nqppp/5n2/2p5/8/1B2PP1P/Pr1B1P2/R3K2R b KQ - bm Ne4; id "ECM.189";
2k1r1r1/ppb2p2/6b1/2qP4/2P2P2/4pP1p/P3Q2P/2RBRN1K b - - bm Bd3; id "ECM.191";
1k1r4/ppq2p2/8/2pPb1r1/2P1Q1B1/6P1/PP3PK1/R4R2 b - - bm f5; id "ECM.201";
r1bq1rk1/pppn2bp/3p2p1/3N1p2/8/BP1BRQ1P/P1PP1PP1/4R1K1 w - - bm Nxc7; id
"ECM.206";
2r1r1k1/pp3pp1/3p3B/P2P1P2/2nb4/7R/1q3PQP/1B3R1K w - - bm Rb3; id "ECM.209";
r4rk1/ppp3b1/3p1qp1/3Pp3/2P1Bn2/4BP2/PP1Q4/2K3RR w - - bm Rxg6; id "ECM.211";
1k1r2r1/pp3p1p/B2q1n2/8/3Pb1p1/2Q5/PR3PPP/2B1R1K1 w - - bm Bf4; id "ECM.212";
8/p1r2q1k/1p1p3p/1Pp1nP2/P1P5/3R2PP/1Q4BK/8 w - - bm Rxd6; id "ECM.240";
r2qr1k1/1pnb1pp1/p1n1p2p/8/P2P3P/B2B1NP1/6P1/R2Q1RK1 w - - bm Bh7+; id
"ECM.247";
2r1rbk1/5pp1/bq5p/1pnBPN2/6Q1/N7/5PPP/R2R2K1 w - - bm Bxf7+; id "ECM.250";
r2r2k1/1bqpbpp1/ppn1p2p/2p1P1N1/P1B2B2/2P5/1PPRQPPP/3R2K1 w - - bm Nxf7; id
"ECM.266";
r1b1r1k1/1p1n1p2/p1nBp1p1/q2pP1Np/P7/R2B3Q/2P2PPP/5RK1 w - - bm Nxf7; id
"ECM.267";
rn4k1/pp2p1b1/4b3/q2p2Q1/2B2P2/8/P1P1K1P1/R6R w - - bm Rh8+; id "ECM.277";
r1b2rk1/1pqp1ppp/p1n1pn2/5N2/8/2PBB3/P1P2PPP/R2QR1K1 w - - bm Nxg7; id
"ECM.280";
2r1r1k1/pp1nbpp1/4pn1p/q3NN1P/P1pP1B2/2P5/1PQ2PP1/R3R1K1 w - - bm Nxg7; id
"ECM.289";
1r3rk1/6p1/p1pb1qPp/3p4/4nPR1/2N4Q/PPP4P/2K1BR2 b - - bm Rxb2; id "ECM.291";
2r1qrk1/pp1b1ppp/4pn2/n1b5/8/2NQ1NP1/PP1BPPBP/R2R2K1 w - - bm b4; id "ECM.297";
3r1rk1/pbqn1pp1/1pp2n1p/2b1p1B1/P1B1P2N/2N4P/1PP1QPP1/3R1RK1 w - - bm Rxd7; id
"ECM.327";
rkb2qr1/1p5p/pQ1bp3/3p2B1/5n2/3B1N2/PP3PPP/2R2RK1 w - - bm Rxc8; id "ECM.332";
8/5p2/4p1k1/4P1p1/2rBRbK1/5P2/r4P2/7R b - - bm Rxd4; id "ECM.335";
r1bqr1k1/pp3pp1/2p4p/3PN1n1/3P1b2/2NB4/PPQ2PPP/3R1RK1 b - - bm Rxe5; id
"ECM.336";
r4k1r/pp2pp2/3p1b2/q2PnQpp/3N4/1BP3P1/PP3PP1/3RR1K1 w - - bm Rxe5; id "ECM.353";
r3r1k1/4pp1p/b5pB/q1pP4/3b4/2N4P/PP4P1/R2RQ2K w - - bm Rxd4; id "ECM.357";
r4rk1/5p2/p1b1pQpq/8/1B2P3/2NR4/PPP3PP/1K6 w - - bm Nd5; id "ECM.367";
3nr1k1/p6p/2n1pRpB/3pP3/2pP2P1/q1P4P/6BK/5Q2 w - - bm Rxg6+; id "ECM.368";
1r2r1k1/1pqb2pp/p2bp1n1/2p3BQ/3pN3/1P1P2P1/P1P3BP/4RRK1 w - - bm Bd8; id
"ECM.370";
1k2rb1r/pbp1q1pp/2pp4/2PnpP2/Q7/1P3NP1/PB5P/2KR1B1R w - - bm Rxd5; id "ECM.371";
r3k2N/pppbq1pp/5n2/3Ppn2/2BP4/2P3bP/PP2Q1P1/RNB2K1R b - - bm Bh2; id "ECM.376";
r3bb2/P1q3k1/Q2p3p/2pPp1pP/2B1P3/2B5/6P1/R5K1 w - - bm Bxe5; id "ECM.379";
q1r3k1/2r4p/2p3pP/2Qp1p2/PRn5/4P1P1/5PB1/1R4K1 w - - bm Rxc4; id "ECM.383";
r4r1k/1bq4p/p4bp1/3pn3/NP6/Q1PBB2P/6P1/3R1RK1 b - - bm d4; id "ECM.387";
2k2r1r/1pp1nqbp/p2p1p2/5P2/2PBN3/1P3Q2/1P4PP/R4RK1 w - - bm Rxa6; id "ECM.394";
2r2nk1/6pp/p1rPqp2/1pP1p3/1P6/2B3R1/1P2Q1PP/5RK1 w - - bm Rxf6; id "ECM.399";
r2rnbk1/pp3ppp/1q4n1/3p1N2/5P2/1PQB4/PBP3PP/4RR1K w - - bm Nh6+; id "ECM.401";
r3nrk1/p1pb1qpp/3p1p2/2pP1N2/2P1PR2/P1PB4/4Q1PP/5RK1 w - - bm e5; id "ECM.402";
6k1/pbq2pp1/4r2p/8/3prb2/1P1Q3P/PN2BPP1/3RRK2 b - - bm Bd2; id "ECM.412";
r2q1rk1/p5pp/bn1p1p2/2pP4/1bP1NP2/3B1R2/PBQ3PP/R5K1 w - - bm Ng5; id "ECM.416";
6k1/rnqb3p/5ppQ/2pPp3/p1N1P3/2PB3P/5PP1/1R4K1 w - - bm f4; id "ECM.422";
5r2/4prkp/3q2p1/2pP1n2/N1Q2R2/1P4PP/P5K1/4R3 b - - bm g5; id "ECM.424";
1n2n1r1/r3qppk/p2p3p/3PpP1P/1P2P3/3B2RQ/3B1P1K/6R1 w - - bm Bxh6; id "ECM.433";
n1rqk3/1p2p3/1n1pP1p1/pP1P1p1r/3B3P/1BN3p1/3Q4/R3K2R w KQ - bm Qg5; id
"ECM.436";
3r1r2/1b4bk/p1n3pp/1p2p3/4P3/q1P1QNB1/B4RPP/5RK1 w - - bm Bh4; id "ECM.438";
r1r3kb/1pqbpp2/p2p1npB/n7/3NP3/1BN2P2/PPPQ2P1/2KR3R w - - bm Bf8; id "ECM.439";
2b5/2qrrpk1/5Rp1/2p4p/1pB1PR1P/1P1P2P1/5Q1K/8 w - - bm Qb2; id "ECM.443";
6r1/6rk/3p3p/p2Rp3/R1PqPp1b/2N2Q2/6PP/7K b - - bm Rxg2; id "ECM.450";
2kr3r/p5b1/Pp2R1p1/2q2p1p/2p2Pn1/2P2BP1/1PQB2P1/5R1K b - - bm h4; id "ECM.456";
r1b1k2r/6pp/p1p1p3/3np1B1/1b2N3/8/q1PQB1PP/3RK2R w Kkq - bm Qxb4; id "ECM.459";
4r1kb/p2r4/1np1p1p1/3nP1Bp/1p3P1R/1B2qP2/PPPN3Q/2K4R w - - bm Rxh5; id
"ECM.463";
r1b3k1/3nqp1p/p1n1p1pP/3pP1N1/Pp3QN1/1Pr3P1/2PR1P2/4RBK1 w - - bm Rxd5; id
"ECM.465";
2rr2k1/5pn1/1b2q1pp/pP1pP3/2pP1PP1/2R1B2P/2Q3B1/3R3K w - - bm f5; id "ECM.468";
2Q2bkr/5p2/1rb5/1pN1n1qB/1P1pPN2/6P1/5P2/R1R3K1 w - - bm Nce6; id "ECM.469";
1rb3k1/2r2pbp/p2q1npn/P1pPp1N1/2B1P3/2P1B1NP/5QP1/3R1RK1 w - - bm Ne6; id
"ECM.472";
r7/pp4pk/2n3qp/5p2/3p4/P4QB1/1PP1RPPP/6K1 b - - bm d3; id "ECM.473";
r4rk1/5ppp/p7/4PR2/P1qnp2Q/4B3/1P4PP/5RK1 w - - bm Rh5; id "ECM.475";
1r2k2r/1bq2pp1/pn2p2p/1p2P1b1/3N4/2N3Q1/PPP3PP/1K1R1BR1 w k - bm Bxb5+; id
"ECM.482";
r4rk1/p1p2pp1/bp1p1q1p/n1nPpN2/2P1P2P/2PB4/P2BQPP1/R3K2R w KQ - bm Bg5; id
"ECM.485";
2kr2r1/2pqbp1p/p1n1b3/1P1pP3/4n3/1BP1BN2/1P4PP/RN1Q1RK1 b - - bm Bh3; id
"ECM.488";
r4r2/1pnqb2k/3p1p1p/p1pPpPpP/2P1N1P1/4BP2/PP1Q4/R2R2K1 w - - bm Bxc5; id
"ECM.492";
r4rk1/1nqb1pbn/6pB/pppPp2p/8/1PP2NNP/P1BQ2P1/R4RK1 w - - bm Nxh5; id "ECM.499";
r1b2rk1/pp4bp/2p3p1/4q2n/NQPN1p1P/1P5n/P3PPB1/2BRRK2 b - - bm f3; id "ECM.500";
r3rk2/pb2bpp1/1n5p/q1pP1B2/1p3B2/5N2/PPQ2PPP/R2R2K1 w - - bm Bc8; id "ECM.503";
r3kb1r/npqbpp1p/p3n1p1/P3P3/6N1/3B1NB1/1PP3PP/R3QRK1 w kq - bm Ng5; id
"ECM.507";
2rr1nk1/pp2q1b1/4p1p1/5p2/1nB5/2B1N1QP/PP4P1/4RRK1 w - - bm Nxf5; id "ECM.512";
6rk/1b2bp1p/ppq1p3/2p1Pp2/P1Br1P2/1PNR2P1/2P1QK1P/6R1 b - - bm Rxf4+; id
"ECM.514";
4qrk1/pp1bbppp/4pn2/2r1Q1B1/7P/2N3R1/PPP2PP1/2KR1B2 w - - bm Bxf6; id "ECM.516";
3k4/p1p5/8/2p1p3/4P3/PpPP2K1/1P6/8 b - - bm c4; id "ECM.551";
2r1r1k1/pp1b1ppp/1q6/3P4/7N/Pn1Q4/1P3PPP/1RB2RK1 b - - bm Nxc1; id "ECM.569";
2q1rk2/QR3ppp/1pPpb3/1P2p1b1/4P3/6P1/3N1PBP/6K1 w - - bm Bh3; id "ECM.578";
r3r1k1/p2n4/3p1pp1/qnp3B1/1p2P1P1/1P3P2/PP2N2Q/1K1R1B2 w - - bm Nf4; id
"ECM.580";
r2q1rk1/pb1nbpp1/1pp1pn1p/3pN3/2PPP3/2N1B1P1/PP3PBP/R2Q1RK1 w - - bm Nxc6; id
"ECM.587";
2r2rk1/pp2pp1p/2np2p1/q4P2/2PBP1b1/2N5/PP1Q2PP/R4RK1 w - - bm h3; id "ECM.589";
1rb1r1k1/p1p1qppp/2pb4/8/2P3n1/4P1P1/PB2BP1P/R1QN1RK1 b - - bm Nxh2; id
"ECM.595";
7k/8/1p1ppp1p/1Pp5/2P2P2/8/3P2PP/6K1 w - - bm f5; id "ECM.600";
8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8 b - - bm g5; id "ECM.605";
r1b5/p2k1r1p/3P2pP/1ppR4/2P2p2/2P5/P1B4P/4R1K1 w - - bm Bxg6; id "ECM.607";
6r1/1p3k2/pPp4R/K1P1p1p1/1P2Pp1p/5P1P/6P1/8 w - - bm Rxc6; id "ECM.608";
1k2b3/4bpp1/p2pp1P1/1p3P2/2q1P3/4B3/PPPQN2r/1K1R4 w - - bm f6; id "ECM.609";
2kr3r/ppp1qpp1/2p5/2b2b2/2P1pPP1/1P2P1p1/PBQPB3/RN2K1R1 b Q - bm Rh1; id
"ECM.610";
6k1/2q3p1/1n2Pp1p/pBp2P2/Pp2P3/1P1Q1KP1/8/8 w - - bm e5; id "ECM.613";
5r2/pp1RRrk1/4Qq1p/1PP3p1/8/4B3/1b3P1P/6K1 w - - bm Qxf7+; id "ECM.614";
6k1/1q2rpp1/p6p/P7/1PB1n3/5Q2/6PP/5R1K w - - bm b5; id "ECM.615";
r5r1/8/bRP1pk1p/3pNp2/5P2/7P/PR4P1/6K1 w - - bm Rxa6; id "ECM.616";
3r2k1/p6p/b2r2p1/2qPQp2/2P2P2/8/6BP/R4R1K w - - bm Rxa6; id "ECM.617";
3r1r2/pp1P3k/4Rbp1/1BP2p1p/8/7P/P4KP1/3R4 w - - bm Ba6; id "ECM.626";
8/6Bp/6p1/2k1p3/4PPP1/1pb4P/8/2K5 b - - bm b2+; id "ECM.629";
3qr1k1/p4ppp/1p1P4/2r1nN2/4P2n/P7/1B4P1/3QRRK1 w - - bm d7; id "ECM.632";
2r1rbk1/p1Bq1ppp/Ppn1b3/1Npp4/B7/3P2Q1/1PP2PPP/R4RK1 w - - bm Nxa7; id
"ECM.635";
r4rk1/ppq3pp/2p1Pn2/4p1Q1/8/2N5/PP4PP/2KR1R2 w - - bm Rxf6; id "ECM.636";
r3qr1k/1b4pp/p2RQ3/Bp2p3/4p3/6P1/PPP2P1P/3R2K1 b - - bm Qh5; id "ECM.637";
8/pR4pk/1b6/2p5/N1p5/8/PP1r2PP/6K1 b - - bm Rxb2; id "ECM.640";
6k1/p4pp1/Pp2r3/1QPq3p/8/6P1/2P2P1P/1R4K1 w - - bm cxb6; id "ECM.641";
8/2k5/2p5/2pb2K1/pp4P1/1P1R4/P7/8 b - - bm Bxb3; id "ECM.646";
2r5/1r5k/1P3p2/PR2pP1p/4P2p/2p1BP2/1p2n3/4R2K b - - bm Nd4; id "ECM.647";
4r2k/p2qr1pp/1pp2p2/2p1nP1N/4R3/1P1P2RP/1PP2QP1/7K w - - bm Rxg7; id "ECM.648";
8/1R2P3/6k1/3B4/2P2P2/1p2r3/1Kb4p/8 w - - bm Be6; id "ECM.650";
r2qrbk1/5ppp/pn1p4/np2P1P1/3p4/5N2/PPB2PP1/R1BQR1K1 w - - bm Bxh7+; id
"ECM.654";
1r1qr1k1/5p1p/1n2p1p1/pp1pP1P1/2pP1BB1/PnP3P1/1P3PK1/1R1Q3R w - - bm Rxh7; id
"ECM.663";
r1b2rk1/2q1bppp/p1n1p3/1p1np1P1/5P2/1NNBBQ2/PPP4P/R4RK1 w - - bm Bxh7+; id
"ECM.665";
r4rk1/pp2q1p1/4b2p/2ppb3/6n1/2P3N1/PPQBBPPP/R4RK1 b - - bm Nxh2; id "ECM.667";
2rqr1k1/1p1bbppp/p3p3/n7/3P2Q1/2PB1N2/P4PPP/R1B1R1K1 w - - bm Bxh7+; id
"ECM.673";
r1b2r1k/ppppq1pp/2n1n3/6N1/2B2P2/4B3/PPP3PP/R2Q1RK1 w - - bm Nxh7; id "ECM.674";
rn1q1rk1/pb1p1ppp/4p3/2pnP3/1bp5/2N2N2/PP3PPP/RBBQK2R w KQ - bm Bxh7+; id
"ECM.675";
rn3rk1/pp1bppbp/1qp3p1/4P1N1/PP1PB3/2P1B3/4Q1PP/R4RK1 w - - bm Nxh7; id
"ECM.679";
3rr1k1/1pq1nppp/p1p2b2/4pB2/2QPP3/P1P1B3/1P4PP/3R1RK1 w - - bm Bxh7+; id
"ECM.680";
2rq1rk1/pp1bnpbp/4p1p1/3pP1N1/3P2Q1/2PB4/P4PPP/R1B1R1K1 w - - bm Nxh7; id
"ECM.684";
2rq1bk1/1br2p1p/p2p2p1/1p1P4/4Q3/PP3N2/1BP5/1K1R3R w - - bm Rxh7; id "ECM.685";
r4rk1/pp1n1ppp/3qp3/3nN1P1/b2P4/P2B1Q2/3B1P1P/1R2R1K1 w - - bm Bxh7+; id
"ECM.687";
r2r2k1/ppqbbppp/4pn2/6N1/n1P4P/3B1N2/PP2QPP1/1KBR3R w - - bm Nxh7; id "ECM.688";
r6r/4ppk1/p2p1bp1/B2p4/3P2p1/QP2P3/P1R1qPPP/2R3K1 b - - bm Rxh2; id "ECM.690";
r3k2r/1b1n1p2/pq1p1bp1/1p4p1/P3P3/1NN5/1PP3PP/R2QRB1K b kq - bm Rxh2+; id
"ECM.692";
2k3r1/ppq2p1p/n1Pb1p2/8/6r1/4BN1b/PPQ2PPP/R3RBK1 b - - bm Bxh2+; id "ECM.698";
3qr1k1/1br2ppp/p2b4/8/PpNp4/3P4/1PP2PPP/R1BQ1RK1 b - - bm Bxh2+; id "ECM.699";
2r2r1k/3b1pb1/p3pp1p/q2p1P1B/8/2N2RR1/P1PQ2PP/7K w - - bm Rxg7; id "ECM.706";
r2qr1k1/1p3ppp/2pb4/2Np4/1P1P2bn/3BP3/2QN1PPP/1RR3K1 b - - bm Nxg2; id
"ECM.712";
r3r1k1/pp3pp1/3p4/2q4p/2P5/1PB2Q1P/n4PP1/3R1RK1 w - - bm Bxg7; id "ECM.713";
r5k1/pn1q1rpp/2pp4/5R1N/bP6/4BQ2/P4PPP/2R3K1 w - - bm Nxg7; id "ECM.714";
3r1rk1/5pp1/pq1n1n1p/2pPR3/2B2P2/1PBQ2RP/P5P1/6K1 w - - bm Rxg7+; id "ECM.715";
rn3rk1/ppq2ppp/2pb1nb1/5N2/2BP4/8/PPP1N1P1/R1B1QR1K w - - bm Nxg7; id "ECM.716";
r4rk1/5ppp/p2pbb2/3B3Q/qp2p3/4B3/PPP2P1P/2KR2R1 w - - bm Rxg7+; id "ECM.718";
4q1k1/1b3r1p/p4pp1/1p6/2P2n2/1P3N2/1B3PPP/R2Q3K b - - bm Nxg2; id "ECM.719";
4rrk1/2pn2pb/p1p1qp2/1pb1pN2/P3P1PN/1P1P4/1BP2PK1/R2Q3R w - - bm Nxg7; id
"ECM.721";
r3r1k1/p3bppp/q1b2n2/5Q2/1p1B4/1BNR4/PPP3PP/2K2R2 w - - bm Rg3; id "ECM.722";
4kbr1/pp1bpp1p/3p1p2/3N4/1PBQP3/q7/P1r2PPP/R4RK1 b - - bm Rxg2+; id "ECM.725";
2rr2k1/4bppp/p1n1p3/3q4/1p1P2N1/2P3R1/P3QPPP/2B2RK1 w - - bm Nh6+; id "ECM.727";
rq1r1bk1/1b3pp1/3pn2p/1n2BN1P/1P2P3/3R1NP1/3Q1PB1/2R3K1 w - - bm Bxg7; id
"ECM.728";
3q1r2/1p1b1pk1/pn5p/3pN1pQ/3P3P/2r3B1/P4PP1/3RR1K1 w - - bm Nxf7; id "ECM.730";
r3r1k1/1bqn1ppp/1pp2p2/8/3P4/1B4N1/PP3PPP/R2QR1K1 w - - bm Bxf7+; id "ECM.734";
r2r2k1/1b2qpp1/1p2n3/p1b1p2p/4P1n1/PP1B2PP/1B1NQP2/R3NRK1 b - - bm Nxf2; id
"ECM.736";
2rq1rk1/1b2bppp/p1n5/1p1BN3/5B2/P7/1P3PPP/R2Q1RK1 w - - bm Nd7; id "ECM.740";
r1bq2k1/pp1n1ppp/3b1n2/PQ1B3r/3N1P2/2N5/1PP3PP/R1B2RK1 w - - bm Bxf7+; id
"ECM.749";
2r1r1k1/5ppp/pq3b2/2pB1P2/2p2B2/5Q1P/Pn3PP1/2R1R1K1 w - - bm Bxf7+; id
"ECM.750";
r3r1k1/pbq1ppbp/1pp2np1/4N3/3P4/2P5/PPB1QPPP/R1B1R1K1 w - - bm Nxf7; id
"ECM.762";
r2rn3/1p3pk1/p1pNn1pp/q3P3/P7/1PN4P/2QR1PP1/3R2K1 w - - bm Nxf7; id "ECM.764";
1bq2k2/1b1n1pp1/pp5p/2pBpN2/P3P2B/3Q1P2/1PP3PP/4K3 w - - bm Be7+; id "ECM.769";
3qr1k1/1br1bp1p/p3p1pB/1p1nN3/3PB3/7Q/PP3PPP/3RR1K1 w - - bm Nxf7; id "ECM.771";
rr1q2k1/1p2bpp1/2p1p2p/P1Pn4/2NP4/3Q1RP1/5PKP/2B1R3 w - - bm Bxh6; id "ECM.773";
r2r2k1/pb1nbpp1/1qp1pn1p/1p2N3/3P1B2/P1N1P3/BPQ2PPP/2R2RK1 w - - bm Bxh6; id
"ECM.774";
r1b1r3/pp2Npbk/3pp2p/q5p1/2QNPP2/6P1/PPP3P1/2KR3R w - - bm Ndf5; id "ECM.776";
1rbqnr2/5p1k/p1np3p/1p1Np3/4P2P/1Q2B3/PPP1BP2/2KR3R w - - bm Bxh6; id "ECM.779";
6rk/3b1n1p/1p1q3b/1PpNp3/2P1Pp2/2Q2NrP/5RP1/2R2B1K b - - bm Bxh3; id "ECM.783";
2r1r1k1/pb1n1pp1/1p1qpn1p/4N1B1/2PP4/3B4/P2Q1PPP/3RR1K1 w - - bm Bxh6; id
"ECM.789";
r2qr3/2p1b1pk/p5pp/1p2p3/nP2P1P1/1BP2RP1/P3QPK1/R1B5 w - - bm Bxh6; id
"ECM.792";
r1b2rk1/1p3pp1/p5Pp/2bpPp1Q/3N4/1Pq1B1R1/2P4P/3R2K1 w - - bm Bxh6; id "ECM.796";
2b1rk2/r6p/1pP1p1p1/p2pNnR1/5Q2/P1B4q/1PP2P1P/1K4R1 w - - bm Rxf5+ Nxg6+; id
"ECM.799";
r6r/ppnqpk2/3pbpp1/5N2/1PP1P3/5RR1/P2QB1PP/6K1 w - - bm Nh6+; id "ECM.801";
2b2r1k/2p3pp/2Nb4/pP5q/2PP4/P4pP1/5P1P/R1BQ2K1 b - - bm Bxg3; id "ECM.803";
r1bq2k1/pp3r1p/2n1p1p1/3pP3/6Q1/2PB2P1/P4PK1/R1B4R w - - bm Bxg6; id "ECM.804";
3q1rk1/2r4p/n1p1n1pQ/p2pP3/Np1P2R1/5PN1/PP3KP1/2R5 w - - bm Rxg6+; id "ECM.805";
r2q1rk1/pp2ppb1/3pn1pQ/3R4/2P3B1/4BR2/PP4PP/6K1 w - - bm Qxg6; id "ECM.813";
6rk/pb3p1p/3bpPq1/3P4/1p1B3r/1B4P1/PPRQ1R1P/6K1 b - - bm Bxg3; id "ECM.815";
1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - bm Rxf6; id "ECM.825";
1rbq2k1/b1p3pp/p1Pp4/3Ppr2/8/5N2/PPQ2PPP/R1B2RK1 b - - bm Rxf3; id "ECM.826";
r1bq1rk1/1p2bppp/p3p3/n3P3/4N3/1P1P1N2/PB4PP/R3QR1K w - - bm Nf6+; id "ECM.829";
r1bq1rk1/ppp3p1/7p/3P2n1/2PQ1p2/1N5P/PPP2PPK/R1B2R2 b - - bm Nf3+; id "ECM.831";
3r1b2/p4bkp/1p1P1p2/r3p1p1/2q1N3/2N2P2/1P1R2PP/2QR3K w - - bm Nxf6; id
"ECM.832";
rqbn1rk1/1p3ppp/p3p3/8/4NP2/8/PPP1BQPP/1K1R3R w - - bm Nf6+; id "ECM.833";
r1b1kb1r/1p4pp/p2ppn2/8/2qNP3/2N1B3/PPP3PP/R2Q1RK1 w kq - bm Rxf6; id "ECM.834";
6nk/pn2qr1r/1pbp1p1p/2p1pPpN/P1P1P1PP/2PP3R/7Q/2BBK2R w K - bm Nxf6; id
"ECM.837";
r1b1kb1r/1p1n1ppp/p2ppn2/6BB/2qNP3/2N5/PPP2PPP/R2Q1RK1 w kq - bm Nxe6; id
"ECM.841";
r1b1k1nr/3n1p1p/1qpBp1p1/pp2b3/4PN2/PBN2Q2/1PP2PPP/2KR3R w kq - bm Nxe6; id
"ECM.842";
r3k2r/1q3ppp/p3p3/2b1P3/p2N1Q2/P7/1PP3PP/3R1R1K w kq - bm Nxe6; id "ECM.845";
3qr1k1/rp3pbp/2p3p1/3p1b2/N1nP4/P2NP3/1PQ2PPP/1BRR2K1 b - - bm Rxe3; id
"ECM.846";
rr4k1/5p1p/n2p1npQ/q1pP4/6P1/2N2P1N/PP1R3P/2K4R b - - bm Rxb2; id "ECM.853";
5rk1/5rp1/p2qb3/R2Np2Q/3bP2B/7P/P5PK/1R6 b - - bm Rf1; id "ECM.856";
2rq1rk1/5ppp/2b1pb2/np6/6N1/2NBB3/PP3PPP/R2Q2K1 w - - bm Bb6; id "ECM.872";




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