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Subject: why did the sides agree to a draw in sjeng-tiger14.6?

Author: Uri Blass

Date: 11:52:49 11/03/01

Deep Fritz believes that sjeng is better(0.75 pawns for white) but I admit that
it did not use all the tablebases

Is it a draw or maybe sjeng missed a chance to win the game against tiger by
agreeing to a draw?

Sjeng - Chess Tiger 14.6
[D]8/5p1p/5Kp1/3n4/8/4P1P1/1kp2P1P/5R2 w - - 0 1

Analysis by Deep Fritz:

48.Kxf7--
  ²  (0.66)   Depth: 1/2   00:00:00
48.Kxf7-- c1Q
  µ  (-0.87)   Depth: 1/5   00:00:00
48.Ke5!
  ³  (-0.69)   Depth: 1/5   00:00:00
48.Ke5! Nc3
  =  (-0.12)   Depth: 1/7   00:00:00
48.Ke5--
  µ  (-1.19)   Depth: 2/3   00:00:00
48.Ke5--
  µ  (-1.19)   Depth: 2/3   00:00:00
48.Kg7!
  µ  (-1.12)   Depth: 2/3   00:00:00
48.Kxf7!
  µ  (-0.91)   Depth: 2/5   00:00:00
48.Kxf7! c1Q 49.Rxc1
  µ  (-0.87)   Depth: 2/5   00:00:00
48.Kxf7 c1Q 49.Rxc1 Kxc1
  µ  (-0.87)   Depth: 3/8   00:00:00
48.Kxf7 Nc3 49.Re1 c1Q
  ³  (-0.62)   Depth: 4/8   00:00:00
48.Kxf7 Nc3 49.Re1 c1Q 50.Rxc1
  µ  (-0.91)   Depth: 5/12   00:00:00
48.Kxf7 Nc3 49.Re1 c1Q 50.Rxc1 Kxc1 51.Kg7
  µ  (-0.91)   Depth: 6/10   00:00:00  1kN
48.Kxf7 Nc3 49.Re1 Nd1 50.Re2 Kc3 51.Rxc2+ Kxc2 52.Kg7 g5
  ³  (-0.62)   Depth: 7/16   00:00:00  2kN
48.Kxf7 Nc3 49.Re1 Nd1 50.Re2 Kc3 51.Rxc2+ Kxc2 52.Kg7 g5
  ³  (-0.62)   Depth: 8/14   00:00:00  4kN
48.Kxf7 Nc3 49.Re1 Nd1 50.Re2 Kc3 51.Rxc2+ Kxc2 52.Kg7 g5
  ³  (-0.62)   Depth: 9/19   00:00:00  22kN
48.Kxf7 Nc3 49.Re1 Nd1 50.Re2 Kc3 51.Rxc2+ Kxc2 52.Kg7 g5
  ³  (-0.62)   Depth: 10/17   00:00:00  27kN
48.Kxf7 g5 49.Re1 g4 50.e4 Nb4 51.e5 Nd3 52.Re2 Nxe5+
  µ  (-0.78)   Depth: 11/20   00:00:00  97kN
48.Kxf7 g5 49.h4 Nc3 50.Re1 Nd1 51.Re2 Kb1 52.Rxc2 Kxc2 53.Kg7 gxh4
  ³  (-0.62)   Depth: 12/21   00:00:00  244kN
48.Kxf7 g5 49.h4 Nc3 50.Re1 Nd1 51.Re2 Kb1 52.Rxc2 Kxc2 53.Kg7 gxh4
  ³  (-0.62)   Depth: 13/22   00:00:00  593kN, tb=1
48.Kxf7 g5 49.h4 Nc3 50.Re1 Nd1 51.Re2 gxh4 52.gxh4 Kc3 53.Rxc2+ Kxc2
  ³  (-0.62)   Depth: 14/24   00:00:02  1540kN, tb=3
48.Kxf7!
  ³  (-0.31)   Depth: 15/26   00:00:05  3441kN, tb=13
48.Kxf7! g5 49.h4 Nc3 50.Re1 Nd1 51.Re2 g4 52.h5 Kb1 53.Rxc2 Kxc2
  =  (0.00)   Depth: 15/27   00:00:08  6038kN, tb=14
48.Kxf7 g5 49.h4 Nc3 50.Re1 Nd1 51.Re2 g4 52.h5 Kb1 53.Rxc2 Kxc2
  =  (-0.19)   Depth: 16/28   00:00:16  11841kN, tb=33
48.Kxf7--
  ³  (-0.50)   Depth: 17/33   00:00:27  19682kN, tb=46
48.Kxf7-- g5 49.Kg7 Nc3 50.Re1 g4 51.Kxh7 Nd1 52.Re2 Kb1 53.Rxc2 Kxc2
  µ  (-0.75)   Depth: 17/33   00:00:39  28148kN, tb=115
48.Kxf7!
  ³  (-0.44)   Depth: 18/32   00:01:09  49126kN, tb=316
48.Kxf7! Nc3 49.Re1 Nd1 50.Re2 Kc3 51.Rxc2+ Kxc2 52.Kg7 Nxf2 53.h4 Ng4
  =  (0.00)   Depth: 18/32   00:02:11  93590kN, tb=481
48.Kxf7!
  ²  (0.31)   Depth: 19/34   00:04:24  184262kN, tb=848
48.Kxf7! Nc3 49.Re1 g5 50.g4 Ne4 51.f4 gxf4 52.exf4 Nf2 53.Kg7 Nxg4
  ±  (0.75)   Depth: 19/36   00:06:49  284458kN, tb=1276

(Blass, Tel-aviv 03.11.2001)

Uri

Re: why did the sides agree to a draw in sjeng-tiger14.6? Gian-Carlo Pascutto 11:46:45 11/04/01
- Re: why did the sides agree to a draw in sjeng-tiger14.6? Peter Berger 12:07:33 11/04/01
  - Re: why did the sides agree to a draw in sjeng-tiger14.6? Gian-Carlo Pascutto 12:24:45 11/04/01
    - Re: why did the sides agree to a draw in sjeng-tiger14.6? Peter Berger 12:37:33 11/04/01
      - Re: why did the sides agree to a draw in sjeng-tiger14.6? Gian-Carlo Pascutto 14:48:49 11/04/01
    - Re: why did the sides agree to a draw in sjeng-tiger14.6? Johan Hutting 12:36:17 11/04/01
Re: why did the sides agree to a draw in sjeng-tiger14.6? José Carlos 16:24:03 11/03/01
Re: why did the sides agree to a draw in sjeng-tiger14.6? Uri Blass 11:54:42 11/03/01
- Re: why did the sides agree to a draw in sjeng-tiger14.6? Michel Langeveld 13:44:56 11/03/01
- It is a clear draw Thomas Lagershausen 12:39:01 11/03/01

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