Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Does any program see Nunn's winning 1st move?

Author: Ernst Walet

Date: 15:44:37 09/03/02

Go up one level in this thread


On September 01, 2002 at 15:25:12, Roy Eassa wrote:

>Nunn - Ward
>
>[d] r3r1kb/p2bp2p/1q1p1npB/5NQ1/2p1P1P1/2N2P2/PPP5/2KR3R w - - 0 1
>
>1.Bg7! Bxg7 2.Nxg7 Kxg7 3.Nd5 Qb5 4.Qh6+ Kf7 5.g5
>
>   [5.Nxf6 c3 6.bxc3 exf6
>      (6...Kxf6 7.Rd5 +-)
>      {6...Rh8 7.Nxh7 Rab8 8.Qf4+ Kg7 9.e5! +-)
>    7.Qxh7+ Kf8 8.e5 Qxe5 9.Qxd7 Re7 10.Qxd6 Qxd6 11.Rxd6 Kg7 makes
>    things a little more difficult for White]
>
>5...Rab8
>
>   [5...Nh5 6.Qxh7+ Ng7 7.Rh4 +-]
>
>   [5...c3 6.bxc3 e6
>      (6...Nh5 7.Qxh7+ Ng7 8.Rh4 +-)
>    7.Nc7 Qc5 8.gxf6 Kxf6 9.Qf4+ Kg7 10.Rxh7+ Kxh7 11.Qf7+ Kh6 12.Rh1+ Qh5
>       (12...Kg5 13.f4+ Kg4 14.Qxg6+ leading to mate)
>    13.Rxh5+ gxh5 14.Nxa8 +-]
>
>6.gxf6 Qxb2+ 7.Kd2 Bf5
>
>   [7...Ba4 8.Qxh7+ Ke6 9.f7 +-]
>
>8.exf5 Qd4+ 9.Ke2 exf6+ 10.Ne3 +-


Result of Hiarcs8.  Any other engine plays this move?

Kind regards, Ernst.

New game
r3r1kb/p2bp2p/1q1p1npB/5NQ1/2p1P1P1/2N2P2/PPP5/2KR3R w - - 0 1

Analysis by Hiarcs 8:

1.Qd2 Rab8 2.b3 Qc5
  ²  (0.62)   Depth: 3/11   00:00:00
1.Qd2 Rab8 2.b3 Qc5
  ²  (0.62)   Depth: 3/11   00:00:00
1.Qd2 Rab8 2.b3 Qc5
  ²  (0.62)   Depth: 3/11   00:00:00
1.Qd2 Rab8 2.b3 Qc5
  ²  (0.62)   Depth: 3/11   00:00:00
1.Qd2 Rab8
  ²  (0.36)   Depth: 4/15   00:00:00
1.Qd2 gxf5 2.gxf5 Kf7
  ³  (-0.52)   Depth: 4/16   00:00:00
1.e5 Rab8 2.b3 dxe5
  =  (-0.13)   Depth: 4/16   00:00:00
1.Ne3 Be6 2.Qf4 a5
  ²  (0.53)   Depth: 4/16   00:00:00
1.Ne3 Rab8
  =  (0.25)   Depth: 5/16   00:00:00  17kN
1.Ne3 Rab8 2.Nxc4 Qb4 3.Rd4 Be6
  =  (0.22)   Depth: 5/16   00:00:00  20kN
1.Nxe7+ Kf7
  ±  (0.81)   Depth: 5/19   00:00:00  31kN
1.Nxe7+ Rxe7 2.Nd5 Nxd5 3.Qxd5+ Re6 4.Qxa8+ Re8 5.Qd5+ Be6 6.Qxd6 Qxb2+ 7.Kd2
Qxa2
  +-  (1.73)   Depth: 5/20   00:00:00  37kN
1.Nxe7+ Rxe7 2.Nd5
  +-  (1.73)   Depth: 6/20   00:00:00  48kN
1.Nxe7+ Rxe7
  +-  (1.48)   Depth: 7/23   00:00:00  93kN
1.Nxe7+ Rxe7 2.Nd5 Nxd5 3.Qxd5+ Re6 4.Qxa8+ Re8
  ±  (1.31)   Depth: 7/27   00:00:01  172kN
1.Nxe7+ Rxe7 2.Nd5
  ±  (1.31)   Depth: 8/27   00:00:02  365kN
1.Nxe7+ Rxe7
  +-  (1.56)   Depth: 9/31   00:00:09  1507kN
1.Nxe7+ Rxe7
  +-  (1.56)   Depth: 9/31   00:00:10  1616kN
1.Nxe7+ Rxe7
  ±  (1.31)   Depth: 10/34   00:00:31  4722kN
1.Nxe7+ Rxe7 2.Nd5 Nxd5 3.Qxd5+ Re6 4.Qxa8+ Re8 5.Qxe8+ Bxe8 6.c3 Be5 7.Rd2 Bc6
8.Bg5 Ba4
  -+  (-2.09)   Depth: 10/38   00:01:34  12968kN
1.Ne3 Rab8 2.b3 Qb4 3.Nb1 cxb3 4.axb3 Rbc8 5.Rd3 Be6 6.Qf4
  ³  (-0.63)   Depth: 10/38   00:02:20  18508kN
1.e5 dxe5 2.Nh4 Kf7 3.Kb1 Bc6 4.Qe3 Reb8 5.b3 cxb3 6.axb3 Qxe3 7.Bxe3
  ³  (-0.45)   Depth: 10/38   00:04:55  37531kN
1.Nh4 Kf7 2.Qe3 Qb7 3.Ng2 Reb8 4.b3 cxb3 5.axb3 Qb4 6.Kd2
  =  (-0.17)   Depth: 10/39   00:08:03  61228kN
1.Bg7 Bxg7 2.Nxg7 Reb8 3.Nh5 Qxb2+ 4.Kd2 Nxh5 5.gxh5 Qb6 6.Ke2 Qb2 7.Kd2
  =  (0.00)   Depth: 10/39   00:13:25  103364kN
1.Bg7 Bxg7 2.Nxg7 Reb8 3.Nh5 Qxb2+ 4.Kd2 Nxh5 5.gxh5 Qb6 6.Ke2 Qb2 7.Kd2
  =  (0.00)   Depth: 11/40   00:32:26  243161kN

(Athlon 4 XP1500+, 128MB hash 02.09.2002)



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.