Computer Chess Club Archives

Search

Terms

Messages

Subject: Testposition - Pawn Magic

Author: Sune Larsson

Date: 12:18:32 08/18/01


  [D]8/pR4pk/1b6/2p5/N1p5/8/PP1r2PP/6K1 b - - 0 1

        Ortueta - Sanz, 1934


  This position might prove to be a good test. Deep Fritz had some problems
  here. Found the correct move after 13:14 with -0.28, then went green
  after 35:39 with -2.47. PIII 800 - 64 MB Hash.

  Black wins after 1.-Rxb2! 2.Nxb2 c3 3.Rxb6 c4! 4.Rb4 a5!  True Pawn Magic!!


  Ortueta - Sanz
  8/pR4pk/1b6/2p5/N1p5/8/PP1r2PP/6K1 b - - 0 1

  Analysis by Deep Fritz: PIII 800 Mhz


1...Bd8 2.Rxa7 Bf6 3.Rb7 Bd4+ 4.Kf1 Rf2+ 5.Ke1 Rxg2 6.h3
  =  (0.19)   Depth: 8/20   00:00:00  67kN
1...Bd8 2.Rxa7 Bf6 3.Kf1 Bxb2 4.Nxb2 Rxb2 5.a4 c3 6.a5
  =  (0.22)   Depth: 9/20   00:00:00  123kN
1...c3!
  =  (0.19)   Depth: 9/20   00:00:00  149kN
1...c3! 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4
  =  (0.06)   Depth: 9/24   00:00:00  161kN
1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Rc3 6.Kf2 Rxc4
  =  (0.06)   Depth: 10/26   00:00:00  242kN
1...Bd8!
  =  (0.03)   Depth: 10/27   00:00:01  382kN
1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.Rxa7 Bxb2 5.Nxb2 Rxb2 6.a4 c3 7.a5
  =  (-0.03)   Depth: 11/25   00:00:02  1076kN
1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.a3 Bd4 5.g4 Rh2 6.Rxa7 Bxb2
  =  (-0.06)   Depth: 12/27   00:00:03  2041kN
1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.g4 Rh2 5.Rxa7 Bxb2 6.Nxb2 Rxb2 7.a4
  =  (-0.03)   Depth: 13/28   00:00:07  4281kN
1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.a3 a6 5.Rb6 Kf5 6.Nxc5 Bxb2 7.Rxa6
  =  (-0.06)   Depth: 14/31   00:00:13  8712kN
1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.a3 Bd4 5.g4 Rh2 6.Rxa7 Rxh3 7.Re7
  =  (-0.16)   Depth: 15/32   00:00:36  23307kN
1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.g4 Rh2 5.Rxa7 Bxb2 6.Nxb2 Rxb2 7.Ra6+
  =  (-0.16)   Depth: 16/34   00:01:27  56494kN
1...c3!
  =  (-0.19)   Depth: 16/34   00:01:33  60739kN, tb=4
1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Rc3 6.Kf2 Rxc4 7.Re6
  =  (-0.19)   Depth: 17/37   00:02:08  84446kN, tb=19
1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Rc3 6.Kf2 Rxc4 7.Re6
  =  (-0.22)   Depth: 18/36   00:04:21  173788kN, tb=70
1...Bd8!
  =  (-0.25)   Depth: 18/37   00:11:10  443095kN, tb=84
1...Rxb2!
  ³  (-0.28)   Depth: 18/38   00:13:14  527020kN, tb=84
1...Rxb2! 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Kf2 c1Q 7.Ke2
  -+  (-2.47)   Depth: 18/38   00:35:39  1415072kN, tb=108

(Larsson, KIL 18.08.2001)

Re: Testposition - Pawn Magic José Antônio Fabiano Mendes 12:36:13 08/20/01
Re: Testposition - Pawn Magic (Eval w/ Crafty - Attn: Bob) Slater Wold 23:57:37 08/18/01
- Re: Testposition - Pawn Magic (Eval w/ Crafty - Attn: Bob) Uri Blass 13:50:57 08/19/01
  - Re: Testposition - Pawn Magic (Eval w/ Crafty - Attn: Bob) Miguel A. Ballicora 17:31:35 08/19/01
Re: Testposition - Pawn Magic T. Dex 17:38:10 08/18/01
Re: Testposition - Pawn Magic Scott Gasch 15:34:50 08/18/01
- Re: Testposition - Pawn Magic Dieter Buerssner 09:30:18 08/19/01
Re: Testposition - Pawn Magic Eduard Nemeth 14:18:32 08/18/01
Re: Testposition - Pawn Magic Slater Wold 14:08:46 08/18/01
Re: Testposition - Pawn Magic Dieter Buerssner 13:14:19 08/18/01
- Re: Testposition - Pawn Magic Uri Blass 20:59:05 08/18/01
- Re: Testposition - Pawn Magic Miguel A. Ballicora 18:41:49 08/18/01
- Re: Testposition - Pawn Magic Sune Larsson 15:03:53 08/18/01
  - Re: Testposition - Pawn Magic Dieter Buerssner 09:35:53 08/19/01
  - Re: Testposition - Pawn Magic Uri Blass 21:03:10 08/18/01
    - Re: Testposition - Pawn Magic Sune Larsson 03:23:13 08/19/01
  - Re: Testposition - Pawn Magic Peter Berger 18:53:16 08/18/01
Re: Testposition - Pawn Magic Bertil Eklund 12:54:55 08/18/01

This page took 0.01 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.