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Subject: Re: Glaurung 1.01 small bug?

Author: Christos Gitsis

Date: 09:13:44 01/14/06

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On January 14, 2006 at 11:54:32, Tord Romstad wrote:

>On January 14, 2006 at 11:35:55, Christos Gitsis wrote:
>
>>This is the game:
>>
>>1.d4 Ng8f6 2.c4 e6 3.Nb1c3 Bf8b4 4.e3 O-O 5.Bf1d3 c5 6.Ng1f3 d5 7.O-O Nb8c6 8.a3
>>Bb4a5 9.cxd5 exd5 10.dxc5 Ba5xc3 11.bxc3 Bc8g4 12.a4 Qd8a5 13.Ra1b1 Ra8b8
>>14.Rb1b5 Bg4xf3 15.gxf3 Qa5c7 16.Bc1a3 Nc6e5 17.Bd3e2 Rf8e8 18.Qd1d4 h6 19.Rf1d1
>>Re8e6 20.c4 Ne5xc4 21.Be2xc4 dxc4 22.Qd4xc4 Nf6e8 23.Rb5b1 Qc7c6 24.e4 Qc6c7
>>25.Rb1b3 Re6g6 26.Kg1h1 Rb8d8 27.Rd1xd8 Qc7xd8 28.Qc4d3 Qd8h4 29.Qd3f1 Qh4f6
>>30.Ba3c1 Qf6c6 31.Bc1e3 Ne8f6 32.Rb3b4 Nf6d7 33.Be3d4 Nd7xc5 34.Bd4xc5 Qc6xc5
>>35.Rb4b3 Qc5c6 36.Rb3a3 b6 37.Ra3a1 Qc6c3 38.Qf1d1 Qc3b2 39.Qd1e1 Kg8h7 40.Qe1f1
>>Rg6d6 41.Qf1e1 Qb2b3 42.Qe1e2 Rd6d4 43.a5 Qb3c3 44.Ra1a2 Qc3c1 45.Kh1g2 Rd4d6
>>46.f4 Qc1xf4 47.axb6 Rd6g6 48.Kf1
>>
>>No repetition of moves.
>>
>>I tried again after reading your post, and it is strange: one time Glaurung
>>finds Qc1+ immediately, and all the other times it sticks to 48...axb6 for at
>>least 2-3 minutes and until depth 13 (after that I stop analysing).
>
>Very strange, and unfortunately I cannot reproduce it.  Glaurung always
>finds Qc1+ at ply 2 and sticks to it in my tests.
>
>Have you activated the new, experimental position learning feature?
>If the answer is yes, this *might* explain the problem.  Position learning
>is almost completely untested, and bugs are certainly possible.
>
>Tord

I don't know how to activate the position learning feature, so I probably am not
using it. I am using the source code of Glaurung 1.01, and the polyglot.ini file
you provided.

Regards,
Christos.



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