Author: Dann Corbit
Date: 11:15:59 12/01/99
Go up one level in this thread
On November 30, 1999 at 15:29:58, John Stanback wrote: >On November 29, 1999 at 15:42:01, Dann Corbit wrote: > >>Here are 3 positions from fairly standard openings. For all of them, they have >>a fairly bad eval. On lengthy analysis, they seemed to be pulling out of the >>dolldrums. What I am wondering is what other programs/human analysts think of >>these positions: >> >>rnb1kbnN/ppp3pp/8/3p4/2B1p3/8/PPPP1PqP/RNBQKR2 b Qq - acd 13; ce -222; pv dxc4; >> >>rnb1k2r/1p1n1ppp/p3p3/4P1B1/1bBN4/q1N5/P1PQ2PP/1R2K2R w Kkq - acd 14; ce -230; >>pv Rb3 Qa5 O-O Nxe5 Be2 O-O Bf4 Ng6 Bc7 Qxc7; >> >>rnb2bnr/pp1p1k1p/2p2q2/8/4Pp2/2N1BQ2/PPP3PP/R4RK1 w - - acd 13; ce -217; pv >>Qh5+; > >I had Zarkov search each of these for 3 minutes on a P2-300. The output >is shown below. The 3rd column is the iteration and the 4th column is >the score in centipawns. > >rnb1kbnN/ppp3pp/8/3p4/2B1p3/8/PPPP1PqP/RNBQKR2 b Qq - >00:01.0 34944 5> -147 dxc4 Qh5+ Kd8 Qf7 Nd7 Qxg8 Qxh2 Qxc4 >00:02.0 65850 6> -147 dxc4 Qh5+ Kd8 Qf7 Nd7 Qxg8 Qxh2 Qxc4 >00:03.2 105728 6 -191 dxc4 Qh5+ Kd8 Qd5+ Nd7 Qxg8 Qxh2 d3 Qh5 dxe4 >00:03.8 128384 6 -153 Bg4 Be2 Nf6 Nc3 Bxe2 Qxe2 Qxh2 Qb5+ Nbd7 Qxb7 >00:05.2 175289 6 -79 Nf6 Bxd5 Bh3 Bc4 Qxh2 Nc3 Bxf1 Bf7+ Kd7 <HT> >00:05.3 179072 6 -89 Nf6 Bxd5 Bh3 Bf7+ Ke7 Bc4 Qxh2 d4 Bxf1 Bxf1 >00:06.9 243366 7> -89 Nf6 Bxd5 Bh3 Bf7+ Ke7 Bc4 Qxh2 d4 Bxf1 Bxf1 >00:08.9 309956 7 -28 Nf6 Bxd5 Bg4 f3 Bxf3 Rxf3 exf3 Bxf3 Qg1+ Ke2 >00:09.2 325504 7 -50 Nf6 Bxd5 Bh3 Bf7+ Kd7 Qe2 Qxh2 <HT> >00:13.5 493042 8> -50 Nf6 Bxd5 Bh3 Bf7+ Kd7 Qe2 Qxh2 <HT> >00:17.7 656768 8 -78 Nf6 Bxd5 Bg4 f3 Bxf3 Rxf3 exf3 Bxf3 Qxh2 Bxb7 >00:51.8 1690918 9> -78 Nf6 Bxd5 Bg4 f3 Bxf3 Rxf3 exf3 Bxf3 Qxh2 Bxb7 >01:05.2 2127099 9 -19 Nf6 Bxd5 Bg4 f3 Bxf3 Rxf3 exf3 Bxf3 Qxh2 Nf7 Kxf7 >01:18.7 2527872 9 -13 Nf6 Bxd5 Bg4 f3 Bxf3 Rxf3 exf3 Bxf3 Qxh2 Qe2+ >02:16.1 4580281 10> -13 Nf6 Bxd5 Bg4 f3 Bxf3 Rxf3 exf3 Bxf3 Qxh2 Qe2+ >03:00.0 6039682 10 -13 Nf6 Bxd5 Bg4 f3 Bxf3 Rxf3 exf3 Bxf3 Qxh2 Qe2+ This one is really intesting. Since your program finds it so fast, I wonder why others don't. >rnb1k2r/1p1n1ppp/p3p3/4P1B1/1bBN4/q1N5/P1PQ2PP/1R2K2R w Kkq - >00:01.0 39168 5> -45 Rb3 Qa5 O-O O-O Bf4 Nxe5 Bxe5 Bxc3 >00:02.3 60809 6> -45 Rb3 Qa5 O-O O-O Bf4 Nxe5 Bxe5 Bxc3 >00:03.4 98304 6 -90 Rb3 Qa5 O-O Nxe5 Bd3 O-O >00:06.9 217509 7> -90 Rb3 Qa5 O-O Nxe5 Bd3 O-O >00:10.2 324608 7 -103 Rb3 Qa5 O-O Nxe5 Bd3 O-O Be4 >00:20.0 743599 8> -103 Rb3 Qa5 O-O Nxe5 Bd3 O-O Be4 >00:38.5 1370624 8 -110 Rb3 Qa5 a3 Bxa3 O-O h6 Bf4 Nc6 Nxc6 bxc6 >01:08.7 2458873 9> -110 Rb3 Qa5 a3 Bxa3 O-O h6 Bf4 Nc6 Nxc6 bxc6 >01:49.5 3949440 9 -135 Rb3 Qa5 a3 Bxa3 O-O Bc5 Qf4 Bxd4+ Qxd4 Nc6 Qd6 >03:22.4 7672200 10> -135 Rb3 Qa5 a3 Bxa3 O-O Bc5 Qf4 Bxd4+ Qxd4 Nc6 Qd6 >03:22.4 7672833 10 -135 Rb3 Qa5 a3 Bxa3 O-O Bc5 Qf4 Bxd4+ Qxd4 Nc6 Qd6 None of the programs like this or the next one, but Kurt seems to think a draw can be achieved. >rnb2bnr/pp1p1k1p/2p2q2/8/4Pp2/2N1BQ2/PPP3PP/R4RK1 w - - >00:01.0 34176 5> -133 Bxf4 Na6 Qh5+ Ke6 Be3 Qg7 >00:01.1 38272 5 -155 Bxf4 Be7 Qh5+ Qg6 Bxb8+ Nf6 Qe5 >00:02.3 75994 6> -155 Bxf4 Be7 Qh5+ Qg6 Bxb8+ Nf6 Qe5 >00:06.5 182272 6 -206 Bxf4 Ke8 Qh5+ Qg6 Qe5+ Be7 Nb5 cxb5 Qxh8 >00:11.1 344989 7> -206 Bxf4 Ke8 Qh5+ Qg6 Qe5+ Be7 Nb5 cxb5 Qxh8 >00:15.2 460262 7 -131 Bxf4 Ke8 Qh5+ Qg6 Qe5+ Be7 Qxh8 Bf6 Bd6 Bxh8 Rf8+ >00:20.4 616960 7 -132 Bxf4 Bg7 Qg3 Qg6 Bxb8+ Nf6 Qd6 Rf8 >00:30.3 944651 8> -132 Bxf4 Bg7 Qg3 Qg6 Bxb8+ Nf6 Qd6 Rf8 >00:52.0 1582592 8 -125 Bxf4 Bg7 Qg3 Qg6 Bxb8+ Nf6 Qd6 Re8 e5 Re6 >01:57.7 3978616 9> -125 Bxf4 Bg7 Qg3 Qg6 Bxb8+ Nf6 Qd6 Re8 e5 Re6 >02:33.4 5310848 9 -127 Bxf4 Bg7 Qg3 Qg6 Bxb8+ Nf6 Qc7 Rg8 e5 Bh8 Rf2 >03:00.0 6429313 9 -127 Bxf4 Bg7 Qg3 Qg6 Bxb8+ Nf6 Qc7 Rg8 e5 Bh8 Rf2 > > >John
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.