Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Some strange move

Author: Matthias Gemuh

Date: 16:00:10 12/30/01

Go up one level in this thread


On December 30, 2001 at 18:12:09, Benny Antonsson wrote:

>On December 30, 2001 at 17:59:32, Matthias Gemuh wrote:
>
>>On December 30, 2001 at 17:06:40, Benny Antonsson wrote:
>>
>>>Are there ANY other program playing (without openingbook) 5...dxc3 in this
>>>position than Alarm ?
>>>
>>>[D] r1bqkb1r/pp1ppppp/2n2n2/4P3/3p4/2P2N2/PP3PPP/RNBQKB1R b KQkq - 0 5
>>>
>>>The game continued:
>>>5...dxc3?? 6.exf6 cxb2 7.Bxb2 gxf6 and white wins easily.
>>
>>
>>HyLogicChess sticks to it even after 2 min.
>>I must admit that this is strange.
>>[1] (0.03)  1 ...dxc3 (00h:00m:00s)
>>[2] (0.03)  1 ...dxc3 2.exf6 (00h:00m:00s)
>>[3] (0.03)  1 ...dxc3 2.exf6 cxb2 (00h:00m:00s)
>>[4] (0.03)  1 ...dxc3 2.exf6 cxb2 3.Bxb2 exf6 (00h:00m:00s)
>>[5] (0.03)  1 ...dxc3 2.exf6 cxb2 3.Bxb2 (00h:00m:00s)
>>[6] (0.07)  1 ...dxc3 2.exf6 cxb2 3.Bxb2 exf6 4.Nc3 (00h:00m:00s)
>>[7] (-0.40)  1 ...dxc3 2.exf6 cxb2 3.Bxb2 gxf6 4.Nc3 d6 (00h:00m:01s)
>>[8] (-0.35)  1 ...dxc3 2.exf6 cxb2 3.Bxb2 gxf6 4.Nc3 Nb4 5.Rc1 d5 (00h:00m:04s)
>>[9] (-0.35)  1 ...dxc3 2.exf6 cxb2 3.Bxb2 gxf6 4.Nc3 (00h:00m:11s)
>>[10] (-0.34)  1 ...dxc3 2.exf6 cxb2 3.Bxb2 exf6 4.Qe2 Be7 5.Nc3 d5 6.Rc1
>>(00h:01m:52s)
>
>Yes it's strange !
>I tried the static evaluator in the following upcoming quiet position:
>[D] r1bqkb1r/pp1ppp1p/2n2p2/8/8/5N2/PB3PPP/RN1QKB1R w KQkq - 0 8
>Alarm evaluates it as +2.21 for white... but when it searches a few plys ahead,
>it thinks black is better !?
>
>Here is the search output:
>1       189     0       3       Kd2
>1       189     0       81      Kd2
>2       117     0       321     Kd2 d5
>2       117     1       498     Kd2 d5
>3       -40     3       5722    Kd2 d6 Bc3
>3       68      4       8951    Qe2
>3       68      5       9496    Qe2 Bg7
>3       68      5       9535    Qe2 Bg7
>4       18      11      15279   Qe2
>4       18      11      15318   Qe2
>5       -32     26      39525   Qe2
>5       -32     26      39564   Qe2
>6       -82     284     455223  Qe2
>6       -82     284     455262  Qe2
>7       -113    331     556113  Qe2 e6 Bc3 Be7 Qb2
>7       -47     582     1079018 Bb5 a6 Bc4
>7       -47     706     1329692 Bb5 a6 Bc4
>8       -70     2066    4042476 Nc3 d6 Bb5 Kd7 Nd4
>8       -70     2748    5975939 Nc3 d6 Bb5 Kd7 Nd4
>
>Hmmm... The fact that it considers Kd7 in the PV is VERY strange also!


[1] (0.11)  1.Nc3 (00h:00m:00s)
[2] (-0.40)  1.Nc3 d6 (00h:00m:00s)
[3] (0.17)  1.Nc3 d6 2.Rc1 (00h:00m:00s)
[4] (-0.01)  1.Nc3 e6 2.Ne4 d5 (00h:00m:00s)
[5] (-0.01)  1.Nc3 e6 2.Ne4 d5 3.Bxf6 (00h:00m:00s)
[6] (-0.01)  1.Nc3 Rg8 2.Rc1 d6 3.Nd5 Ne5 (00h:00m:00s)
[7] (-0.01)  1.Nc3 e6 2.Ne4 Bb4 3.Nfd2 Be7 4.Qf3 d5 (00h:00m:02s)
[8] (-0.25)  1.Nc3 Rg8 2.Qd5 Qb6 3.Nb5 e6 4.Qd2 d5 (00h:00m:16s)
[9] (-0.25)  1.Nc3 d6 2.Rc1 Be6 3.Qa4 d5 4.Nd4 Qb6 5.Nb5 (00h:01m:08s)
[10] (-0.13)  1.Nc3 Rg8 2.Rc1 d6 3.Qd3 h6 4.h3 (00h:02m:22s)













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.