Author: Will Singleton
Date: 17:18:57 03/10/00
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On March 10, 2000 at 15:04:29, Ernst A. Heinz wrote: >>I'm very sorry about not posting the test positions correctly. Thank you again >>to Laurence Chen for seeing that. As I said before, I'm extremely curious if >>any chess programs out there can solve any of the following test positions. >>For those who find these positions familiar, they are indeed from famous games. >> >>Position Number One, White to move: b3 >> >>Position Number One, Black to move: Rb4 >> >>Position Number One, Black to move: Re6 >> >>Position Number One, Black to move: Rc4 >> >>1rbq1rk1/p3ppbp/3p2p1/n2P4/1p3B2/6P1/PPPQNPBP/R4RK1 w - - 0 1 >> >>1r3rk1/2qnppb1/b2p2pp/p1pP4/P1P5/3B1NP1/2QBPP1P/1R3RK1 b - - 0 1 >> >>3rq1k1/4rppp/2n3b1/pp2P3/2pP1QB1/P1P1R3/1B4PP/4R1K1 b - - 0 1 >> >>2q2rk1/p1rn1ppp/1p2pn2/8/Q2P4/2P2N2/P2B1PPP/2RR2K1 b - - 0 1 > >----- > >"DarkThought WCCC'99" locks onto the solution move b3 of the first >position in iteration #12 after roughly 3 min. > >00:00:27 12.01 Bh6 Nc4 Qf4 Bxh6 Qxh6 Nxb2 Nd4 Bd7 Rab1 Nc4 =-0.52 #9506904 >00:00:47 12.02 Rfb1 Nc4 Qc1 e5 dxe6 fxe6 c3 Qc7 b3 Bd7 >=-0.51! #15669185 >00:02:46 12.31 b3 Bxa1 Rxa1 g5 Bxg5 Bf5 >=-0.51! #53920727 >00:02:58 12.01 Rfb1 Nc4 Qc1 Bg4 f3 Qb6+ Kh1 Bd7 Bg5 Qf2 =-0.45 #58017768 >00:03:25 12.01_b3 Bxa1 Rxa1 g5 Bxg5 Bf5 >=-0.44! #67738465 >00:06:58 13.01 b3 Bxa1 Rxa1 Ba6 a3 Bxe2 Qxe2 bxa3 Rxa3 =-0.28 #134968048 >00:13:50 14.01 b3 Bxa1 Rxa1 Ba6 a3 Bxe2 Bh6 Re8 axb4 Nxb3 =-0.30 #264407240 >00:42:41 15.01 b3 Ba6 a3 Bxe2 Qxe2 Bxa1 Rxa1 bxa3 Rxa3 Qc7 =-0.11 #818967735 > >----- > >"DarkThought WCCC'99" locks onto the solution move Rb4 of the second >position in iteration #7 after 3 sec. > >00:00:03 7.01 Rb4 Bxb4 cxb4 Qb3 Nc5 Qa2 Rc8 Rxb4 axb4 >=-0.09! #1144004 >00:00:04 8.01 Rb4 Bxb4 cxb4 Nd2 Rc8 e4 Kh7 Nb3 Bxc4 Bxc4 =-0.11 #1393526 >00:00:08 9.01 Rb4 Bxb4 cxb4 e4 Rc8 Kh1 Nb6 Rfc1 Kh7 =-0.02 #2587933 >00:00:15 10.01 Rb4 Rfc1 Rc8 Qd1 Kh7 Bxb4 cxb4 Kh1 Rf8 e4 =-0.09 #4853632 >00:00:39 11.01 Rb4 Rfc1 Nb6 Bxb4 cxb4 Qb3 Qc5 Nd2 Rc8 e3 =-0.05 #12517125 >00:01:15 12.01 Rb4 Rfc1 Rc8 Qd1 Bb7 Bxb4 cxb4 e3 Kh8 Qb3 =-0.09 #24250267 >00:03:57 13.01 Rb4 Rfc1 Nb6 Bxb4 cxb4 e3 Rc8 Nd4 Bxd4 exd4 =-0.02 #74930603 >00:06:44 14.01 Rb4 Rfc1 Rbb8 Kh1 Nf6 Rxb8 Rxb8 Bxg6 fxg6 Qxg6 =-0.10 #126840781 > >----- > >For the remaining two positions, "DarkThought" seems to prefer Ne4 >and Ra7 resp. > >Cheers, > >=Ernst= > >P.S. >WWW pages of "DarkThought" at URL >http://supertech.lcs.mit.edu/~heinz/dt/. This is Hiarcs 6 on a Mac G3/500, one hour per position: 1rbq1rk1/p3ppbp/3p2p1/n2P4/1p3B2/6P1/PPPQNPBP/R4RK1 w - - 0 1 bm b3; id "test1"; ce -48; pv Qd3 Bf5 Be4 Bxe4 Qxe4 Qc7 c3 bxc3 bxc3 Qc4 f3 Rb2 Rfe1 Qxe4 fxe4 Rfb8 Be3 ; 1r3rk1/2qnppb1/b2p2pp/p1pP4/P1P5/3B1NP1/2QBPP1P/1R3RK1 b - - 0 1 bm Rb4; id "test2"; ce -21; pv Rfe8 Kg2 Nf8 Rxb8 ; 3rq1k1/4rppp/2n3b1/pp2P3/2pP1QB1/P1P1R3/1B4PP/4R1K1 b - - 0 1 bm Re6; id "test3"; ce -53; pv Ra7 e6 f6 Bf5 Bxf5 Qxf5 Ne7 Qe4 Raa8 R1e2 f5 Qe5 Rd5 Qc7 Rdd8 ; 2q2rk1/p1rn1ppp/1p2pn2/8/Q2P4/2P2N2/P2B1PPP/2RR2K1 b - - 0 1 bm Rc4; id "test4"; ce -17; pv Ne4 c4 Nxd2 Rxd2 Qb7 Rdc2 Rfc8 Qb5 Nf6 a4 a6 Qb4 Nd5 Qd2 Nf6 ; So, it finds none. But the last two are the same as DT found, and the first two are also debatable. You sure about these? Will
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