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Subject: Re: Glaurung 1.01 small bug?

Author: Uri Blass

Date: 08:21:07 01/14/06

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On January 14, 2006 at 10:50:53, Christos Gitsis wrote:

>Hello Tord,
>
>[D] 8/p4ppk/1P4rp/8/4Pq2/8/R3QP1P/5K2 b - - 0 48
>
>Glaurung doesn't see the win with 48...Qc1+ 49. Qe1 Rg1+ 50. Kxg1 Qxe1+ in this
>position. It is strange, since all the moves are with check.
>
>Regards,
>Christos.

Glaurung has no problem

Can you show the game because I suspect that 48...Qc1+ force repetition of the
position.

New game
[D]8/p4ppk/1P4rp/8/4Pq2/8/R3QP1P/5K2 b - - 0 1

Analysis by Glaurung 1.0.1:

1...axb6 2.f3 Qc1+ 3.Qe1
  ยต  (-1.06)   Depth: 2/8   00:00:01
1...Qc1+ 2.Qe1 Rg1+ 3.Kxg1 Qxe1+ 4.Kg2 Qxe4+ 5.f3
  -+  (-5.81)   Depth: 2/10   00:00:01
1...Qc1+ 2.Qe1 Rg1+ 3.Kxg1 Qxe1+ 4.Kg2 Qxe4+ 5.Kg3 axb6
  -+  (-6.57)   Depth: 3/11   00:00:01
1...Qc1+ 2.Qe1 Rg1+ 3.Kxg1 Qxe1+ 4.Kg2 Qxe4+ 5.Kg3 axb6
  -+  (-6.57)   Depth: 4/12   00:00:01
1...Qc1+ 2.Qe1 Rg1+ 3.Kxg1 Qxe1+ 4.Kg2 Qxe4+ 5.Kg3 Qd3+ 6.f3 axb6
  -+  (-6.67)   Depth: 5/16   00:00:01
1...Qc1+ 2.Qe1 Rg1+ 3.Kxg1 Qxe1+ 4.Kg2 Qxe4+ 5.Kg3 Qe5+ 6.f4 Qe3+ 7.Kg2 axb6
  -+  (-6.78)   Depth: 6/18   00:00:01  6kN
1...Qc1+ 2.Qe1 Rg1+ 3.Kxg1 Qxe1+ 4.Kg2 Qxe4+ 5.f3 Qg6+ 6.Kf2 Qxb6+ 7.Kg3 Qc7+
8.f4 a5
  -+  (-6.84)   Depth: 7/24   00:00:02  23kN
1...Qc1+ 2.Qe1 Rg1+ 3.Kxg1 Qxe1+ 4.Kg2 Qxe4+ 5.f3 Qg6+ 6.Kf2 Qxb6+ 7.Kg3 Qg6+
8.Kh4 Qg5+ 9.Kh3 Qf5+ 10.Kg3 a5
  -+  (-6.84)   Depth: 8/24   00:00:03  41kN

(,  14.01.2006)



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