Author: Sam Lloyd
Date: 17:46:20 04/14/04
Go up one level in this thread
On April 14, 2004 at 11:12:08, Stephen Ham wrote: >Hi Terry, > >I agree with you and am glad that 13 a3! interests you as well. > >As you know, I'm a correspondnece chess player with a technical style of play >(tactics aren't my strength - especially against machines!). So I've had fun >testing engines to see if any of them will select my purely human moves. So far, >there's been very little acceptance of my positional/technical move tests by the >engines. The closest correlation seems to be with Rebel 12. In one of my tests, >it was the only engine to select the move that I played. When I fed my move into >the other engines that didn't select my move, their evaluations eventually rose >to a favorable figure. So it's clear that engines in general won't find the >"positional" moves that I think are best. But when forced to play the move, they >eventually learn to like the resulting positions, although the evaluation may >not be as high as the original PV for that engine. > >So I think it would be fun for you and other engine experts to test 13 a3! to >see if any engine selects it. Since the justifications behind 13 a3! are deep >(they certainly are for humans), you may need to allow 24-hours or so for the >test. > >Thanks again for mentioning this game, Terry. It is indseed rich in test >positions, both tactically and of a positional/technical nature. I'll try to >Rebel 12 on this position and will report what it selects. > >Stephen > Rebel 12 finds 13. a3 instantly, and stays with it. Hiarcs 9 takes a little longer, but as I suspected found 13. a3 and stays with it as well. My hardware is prehistoric by todays standards. P-III 500 128MB RAM with 64MB for HTs. Hiarcs 9 - McCracken,T [D]r1bq1rk1/3nbppp/2n1p3/2ppP3/pp3B1P/3P1NP1/PPP2PB1/R2QRNK1 w - - 0 1 Analysis by Hiarcs 9: 13.Qd2 a3 ³ (-0.44) Depth: 1/2 00:00:00 13.Qd2 Bb7 14.c3 ³ (-0.63) Depth: 2/6 00:00:00 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 2/6 00:00:00 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 2/6 00:00:00 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 3/6 00:00:00 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 4/6 00:00:00 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 5/6 00:00:00 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 6/6 00:00:00 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 7/8 00:00:00 1kN 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 8/8 00:00:00 1kN 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra8 17.Bb2 Bb7 ³ (-0.44) Depth: 9/12 00:00:00 4kN 13.h5 f6 14.exf6 Rxf6 15.Qe2 a3 16.b3 Nb6 17.Ne5 Nxe5 18.Bxe5 ³ (-0.43) Depth: 10/26 00:00:58 2162kN 13.h5 a3 14.bxa3 Rxa3 15.h6 g6 16.Bc1 Ra5 17.Bb2 Bg5 18.Nxg5 Qxg5 19.c4 ³ (-0.56) Depth: 11/27 00:02:24 5363kN 13.a3 Bb7 ³ (-0.55) Depth: 11/27 00:03:13 7211kN 13.a3 bxa3 14.bxa3 Ba6 15.h5 c4 16.h6 g5 17.Nxg5 Bxg5 18.Qg4 Ncxe5 19.Qxg5+ ³ (-0.46) Depth: 11/28 00:04:38 10347kN 13.a3 bxa3 14.bxa3 Rb8 15.c4 Nb6 16.Ne3 Na5 17.Rb1 Nb3 18.Nd2 dxc4 19.Ndxc4 Ba6 ³ (-0.32) Depth: 12/30 00:12:30 28289kN 13.a3 bxa3 14.bxa3 Re8 15.c4 Nb6 16.Ne3 Rb8 17.Rb1 ³ (-0.29) Depth: 13/37 00:37:12 83484kN (McCracken, None 14.04.2004) Terry
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