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Subject: Re: Eleven BS2830 troublemakers (defy one billion nodes)

Author: Chessfun

Date: 18:58:51 01/24/00

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On January 24, 2000 at 16:06:48, Dann Corbit wrote:

>These positions in BS2830 were analysed by Crafty at C.A.P. time controls, and
>we got the wrong answer.  So I reanalyzed them at long time controls, and
>*still* got the wrong answer.  I have not tried with Hiarcs or Rebel yet.  Does
>anyone have good EPD results for these?  If so, what was the program used and
>what was the time control?   Yes, those node counts are over one Billion!
>
>r1bq1rk1/pp4bp/2np4/2p1p1p1/P1N1P3/1P1P1NP1/1BP1QPKP/1R3R2 b - - acd 15 acn
>1408945135; ce 67; pv Bg4 Ncd2 Qd7 Qe3 Bh3+ Kg1 Bxf1 Rxf1 g4 Nh4 Nd4 c4 Qe7 Bxd4
>exd4 Qe2 Qe6; pm Bg4; bm Bh3+; am Kom, 197; id "BS2830.03";
>
>2r1r3/p3bk1p/1pnqpppB/3n4/3P2Q1/PB3N2/1P3PPP/3RR1K1 w - - acd 14 acn 1313815153;
>ce 84; pv Qh3 Rh8 Nd2 Na5 Ne4 Qd7 Ba4 Nc6 Qf3 Rhe8 Ng5+ Kg8 Nxe6 Bxa3 Bb3 Rxe6
>Bxd5; pm Qh3; bm Rxe6; id "BS2830.05";
>
>rn2r1k1/pp3ppp/8/1qNp4/3BnQb1/5N2/PPP2PPP/2KR3R b - - acd 13 acn 1652241874; ce
>70; pv Bxf3 gxf3 Nxc5 Bxg7 Ne6 Qg3 f6 Bxf6+ Kf7 Qh4 Nd7 Bd4 Nef8 Rhe1; pm Bxf3;
>bm Bh5; id "BS2830.08";
>
>r3k2r/pb3pp1/2p1qnnp/1pp1P3/Q1N4B/2PB1P2/P5PP/R4RK1 w kq - acd 16 acn
>1236189939; ce 33; pv Qb3 O-O Bxg6 Qxc4 Qxc4 bxc4 Bxf7+ Kxf7 exf6 gxf6 Bf2 Rfe8
>Bxc5 a5 Rab1 Rab8 Rfd1; pm Qb3; bm exf6; id "BS2830.11";
>
>r1b1r1k1/ppp2ppp/2nb1q2/8/2B5/1P1Q1N2/P1PP1PPP/R1B2RK1 w - - acd 14 acn
>1355889197; ce 38; pv Qc3 Ne5 Bb2 Nxf3+ Qxf3 Qxf3 gxf3 Be6 Rfe1 Bxc4 bxc4 f5 d3
>Kf7 Kg2 Bf4 Bd4; pm Qc3; bm Bb2; id "BS2830.12";
>
>2r2rk1/1bpR1p2/1pq1pQp1/p3P2p/P1PR3P/5N2/2P2PPK/8 w - - acd 17 acn 1180937632;
>ce 0; pv c3 Rce8 Qf4 Kg7 Qf6+ Kg8; pm c3; bm Kg3; id "BS2830.15";
>
>r1b1qrk1/ppBnppb1/2n4p/1NN1P1p1/3p4/8/PPP1BPPP/R2Q1R1K w - - acd 15 acn
>1325306616; ce -18; pv Nb3 Ndxe5 N5xd4 Nxd4 Nxd4 Nc6 c3 Bxd4 cxd4 Qd7 Be5 f6 Qc2
>Kg7 Bg3 Nxd4 Qc4 Nxe2 Qxe2; pm Nb3; bm Ne6; id "BS2830.17";
>
>8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8 b - - acd 20 acn 1583636037; ce 132; pv Kg3 Be7
>d4+ exd4 Kxf4 Bg5+ Kf3 Kb2 Bd5 Bf6 Ke4 Kc3 Ke3 Bg5+ Ke2 Bf6 Kf2 Be7 Kf3 Kb2 Ke4
>Bf6; pm Kg3; bm g5; id "BS2830.18";
>
>r1bqk2r/pppp1Npp/8/2bnP3/8/6K1/PB4PP/RN1Q3R b kq - acd 14 acn 1211103667; ce
>198; pv Qe7 Qxd5 Rf8 Rf1 Rxf7 Qxf7+ Qxf7 Rxf7 Kxf7 Nc3 Bb6 Ne4 h6 Rf1+ Ke6 Kf4
>Kd5; pm Qe7; bm O-O; id "BS2830.20";
>
>r2qr2k/pbp3pp/1p2Bb2/2p5/2P2P2/3R2P1/PP2Q1NP/5RK1 b - - acd 17 acn 1280149593;
>ce 156; pv Bd4+ Kh1 Qf6 f5 Bxb2 Rd7 Rac8 Re1 Bc3 Rf7 Qxf7 Bxf7 Rxe2 Rxe2 Rd8 Kg1
>Bf3; pm Bd4+; bm Qxd3; id "BS2830.22";
>
>5r2/1p4r1/3kp1b1/1Pp1p2p/2PpP3/q2B1PP1/3Q2K1/1R5R b - - acd 16 acn 1187546978;
>ce 71; pv Qa8 Ra1 Qd8 Be2 Qf6 Rh3 Bxe4 fxe4 Qf2+ Kh1 Rxg3 Rh2 Qe3 Qxe3 Rxe3 Bf1
>Rxe4 Bg2 Re2 Rxh5; pm Qa8; bm Rxf3; am Kombinie; id "BS2830.23";

Dan.
   Check out http://www.netcologne.de/~nc-schwaran2/
go to computer chess left side menu, then to test suite results.

Seems also Century Q3 will solve most.
Thanks.






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