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Subject: Re: Mate in 12

Author: M Hurd

Date: 07:58:06 02/12/06

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On February 12, 2006 at 10:34:47, Rob Basham wrote:

>[D]2r4k/1R3Q2/5b2/1P2pq2/6b1/4B2N/5PPK/8 w - - 0 1
>
>Bg5 seems to mate in about 12 moves.
>Any engines announce a mate at move one?
>
>regards
>
>Rob

Hi Rob

Rybka gets it on my athlon 2400 xp with 512 mb hash.

New game - Rybka 1.01 Beta 13d 32-bit
2r4k/1R3Q2/5b2/1P2pq2/6b1/4B2N/5PPK/8 w - - 0 1

Analysis by Rybka 1.01 Beta 13d 32-bit:

1.Bg5
  +-  (12.13)   Depth: 3   00:00:00
1.Bg5
  +-  (12.13)   Depth: 4   00:00:00
1.Bg5 Be7
  +-  (10.25)   Depth: 5   00:00:00
1.Bg5 Be7 2.Qxe7
  +-  (10.25)   Depth: 6   00:00:00  2kN
1.Bg5 Be7 2.Qxe7 Qg6
  +-  (10.25)   Depth: 7   00:00:00  5kN
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8
  +-  (10.86)   Depth: 8   00:00:00  11kN
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4
  +-  (10.80)   Depth: 9   00:00:00  23kN
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4 Re8
  +-  (10.86)   Depth: 10   00:00:01  49kN
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4 Re8 5.Qh8+ Kxh8 6.Nxg6+ Kg8 7.Bf6
  +-  (14.08)   Depth: 11   00:00:03  152kN, tb=1
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4 Re8 5.Qh8+ Kxh8 6.Nxg6+ Kg8 7.Bf6 Bd7
  +-  (14.08)   Depth: 12   00:00:07  279kN, tb=2
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4 Re8 5.Qh8+ Kxh8 6.Nxg6+ Kg8 7.Bf6 Bd7
  +-  (14.08)   Depth: 13   00:00:15  544kN, tb=5
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4 Re8 5.Qh8+ Kxh8 6.Nxg6+ Kg8 7.Bh6 Bd7
  +-  (14.93)   Depth: 14   00:00:49  1273kN, tb=34
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4 Re8 5.Qh8+ Kxh8 6.Nxg6+ Kg8 7.Bh6 Bd7
  +-  (14.93)   Depth: 15   00:02:01  2562kN, tb=120
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Nf4 Re8 5.Qh8+ Kxh8 6.Nxg6+ Kg8 7.Bh6 Bd7
  +-  (22.42)   Depth: 16   00:04:48  7962kN, tb=609
1.Bg5 Be7 2.Qxe7 Qg6 3.Qxe5+ Kg8 4.Bf6 Bxh3 5.Qd5+ Kf8 6.Be7+ Ke8 7.gxh3 Rc7
  +-  (#13)   Depth: 17   00:06:25  12501kN, tb=1632

Regards

Mike

• Re: Mate in 12 - Glaurung (Tord, look at this) Andre Reffhaug 08:07:55 02/12/06
  • Re: Mate in 12 - Glaurung (Tord, look at this) Tord Romstad 08:34:56 02/12/06
    • Re: Mate in 12 - Glaurung (Tord, look at this) Steve Maughan 12:45:12 02/12/06
    • Re: Mate in 12 - Glaurung (Tord, look at this) Andre Reffhaug 09:27:26 02/12/06
    • Re: Mate in 12 - Glaurung (Tord, look at this)...OK thanks to All... Rob Basham 08:57:28 02/12/06

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