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Subject: Re: Interesting position ... Last but not least: Yace 0.24p2

Author: Jason Williamson

Date: 10:09:14 10/06/00

Go up one level in this thread


On October 05, 2000 at 22:48:40, Steffen Jakob wrote:

>Hi!
>
>Here comes a position from a game Hossa - Arasan:
>
>[D]r3r1k1/3q2p1/2p1ppQP/2P3p1/1p1P4/pPb1RN2/P4P2/1K5R w
>
>There are two moves which are winning fast: Ne5 and Nxg5 (e.g. 1.Nxg5 fxg5 2.
>Reh3 +-). Hossa missed those moves and lost the game. First I thought that this
>should be very easy to find for a comp but after having talked to some
>programmers I saw that other programs also need more time than I expected (at
>least too long for a blitz game). How long does your favourite program take to
>see either Ne5 or Nxg5 with a +- score (something like +0.5 doesnt count)?
>
>Greetings,
>Steffen.

New position
r3r1k1/3q2p1/2p1ppQP/2P3p1/1p1P4/pPb1RN2/P4P2/1K5R w - - 0 1

Analysis by Yace 0.24 pre 2:

1.Qxe8+ Rxe8 2.hxg7 Bxd4 3.Nxd4 Qxd4
  -+  (-5.63)   Depth: 1   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 1   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 1   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 1   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 1   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 4   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 4   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 4   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 4   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 4   00:00:01
1.h7+ Kh8 2.Re4 Rad8 3.Rg4
  =  (-0.23)   Depth: 4   00:00:01
1.Re4 f5 2.h7+ Kf8 3.h8Q+ Ke7
  =  (-0.22)   Depth: 4   00:00:01
1.Re4 Rad8 2.hxg7 Qxg7 3.Qh5
  =  (-0.13)   Depth: 4   00:00:01
1.Re4 Rad8 2.h7+ Kh8 3.Rg1 Qd5
  ³  (-0.32)   Depth: 5   00:00:01  41kN
1.hxg7 Qxg7 2.Qe4 g4 3.Ne1 g3
  ³  (-0.31)   Depth: 5   00:00:01  41kN
1.hxg7 Qxg7 2.Qe4 Ra6 3.Qg4 Kf7
  =  (-0.16)   Depth: 5   00:00:01  41kN
1.hxg7 Qxg7 2.Qe4 Ra6 3.Qd3 Ra7 4.Qe4
  =  (-0.11)   Depth: 6   00:00:02  181kN
1.hxg7 Qxg7 2.Qe4 Rac8 3.Rh5 g4 4.Nh2 f5
  ³  (-0.35)   Depth: 7   00:00:03  391kN
1.Re4 Rad8 2.Rg1 e5 3.hxg7 Bxd4 4.Nxd4 Qxg7
  ³  (-0.34)   Depth: 7   00:00:03  452kN
1.Re4 Rad8 2.Rg4 Rc8 3.h7+ Kh8 4.Rhg1 Rcd8
  =  (-0.16)   Depth: 7   00:00:05  643kN
1.Re4 Rad8 2.Rg4 Qe7 3.Kc1 Bb2+ 4.Kb1 Qd7 5.Re4 e5 6.hxg7 Qxg7 7.Qxg7+ Kxg7
8.dxe5 Bxe5 9.Rxb4
  =  (-0.16)   Depth: 8   00:00:09  1511kN
1.Re4 Rab8 2.Rh3 Rbd8 3.Rh1 e5 4.hxg7 Qxg7 5.Qh5 Rf8 6.dxe5 fxe5
  =  (-0.15)   Depth: 9   00:00:31  5589kN
1.Re5 Bxd4 2.Nxd4 fxe5 3.Nxc6 Qb7 4.Rh5 Rac8 5.Nxb4 Rf8 6.hxg7 Rxf2 7.Qxe6+
  =  (-0.14)   Depth: 9   00:01:07  12531kN
1.Re5 Bxd4 2.Rxg5 fxg5 3.Nxg5 Bxf2 4.Rf1 Qd1+ 5.Rxd1 Red8 6.Rxd8+ Rxd8
  ²  (0.34)   Depth: 9   00:01:15  13883kN
1.Re5 Bxd4 2.Rxg5 fxg5 3.Nxg5 Bxc5 4.h7+ Kh8 5.Nf7+ Qxf7 6.Qxf7 Re7 7.Qf4
  ±  (0.88)   Depth: 9   00:01:23  15277kN
1.Re5 Bxd4 2.Rxg5 fxg5 3.Nxg5 Bxc5 4.f3 Rad8 5.h7+ Kh8 6.Nf7+ Qxf7 7.Qxf7 e5
  ±  (0.85)   Depth: 10   00:01:57  20643kN
1.Re5 Bxd4 2.Nxd4 fxe5 3.Nf3 Qe7 4.Nxg5 Rf8 5.hxg7 Qxg7 6.Qxe6+ Rf7 7.Nxf7 Kf8
  ±  (1.35)   Depth: 11   00:03:26  38715kN
1.Re5 fxe5 2.h7+ Kh8 3.Nxe5 Qe7 4.Qxg5 Qf6 5.Ng6+ Qxg6+ 6.Qxg6 Bxd4 7.Rg1 Re7
8.Qc2
  +-  (2.00)   Depth: 11   00:04:30  51547kN
1.Nxg5 fxg5 2.Reh3 g4 3.Rh5 Kh8 4.hxg7+
  +-  (2.01)   Depth: 11   00:05:31  65329kN
1.Nxg5 fxg5 2.Reh3 Qf7 3.h7+ Kh8 4.Qxf7 Bxd4 5.Rg1 Bxc5 6.Rxg5 Bd4 7.Rhg3 Kxh7
8.Rxg7+ Kh6
  +-  (6.48)   Depth: 11   00:07:23  89108kN

(Williamson, Vancouver 06.10.2000)



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