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Subject: Re: Good Test. Move.....BxP+

Author: Uri Blass

Date: 12:45:06 12/26/02

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On December 26, 2002 at 14:06:13, Art Basham wrote:

>Sure, Qh5 is a good move, but
>both Ruffian 1.0.1 and Yace 0.99.56 show
>1. Bxh7+
>in only about 20 seconds (at 6 ply) on my slow computer...!
>
>Looks like a pretty good test move to me...:-)
>
>art...

Yace shows Qh5 at ply 9(the first ply that it can see a positive score).

It believes that Bxh7+ is only a draw and Qh5 is better(the same for Ruffian).

I post only analysis by yace

New position
[D]r2q1rk1/pb2bppp/1p2p3/nP1n4/8/P2BN1N1/1BP3PP/R2Q1R1K w - - 0 1

Analysis by Yace 0.99.56:

1.Ne3xd5 Qd8xd5
  µ  (-1.20)   Depth: 1   00:00:00
1.Qd1-f3
  µ  (-0.86)   Depth: 1   00:00:00
1.Qd1-f3 e6-e5
  µ  (-1.04)   Depth: 2   00:00:00
1.Qd1-f3 Be7-c5 2.Ne3xd5
  µ  (-0.98)   Depth: 3   00:00:00
1.Qd1-h5 Nd5-b4
  µ  (-0.95)   Depth: 3   00:00:00
1.Qd1-h5 f7-f5 2.Qh5-f3
  µ  (-0.84)   Depth: 3   00:00:00
1.Qd1-h5 f7-f5 2.Ne3-c4 Nd5-f6
  µ  (-0.91)   Depth: 4   00:00:00
1.Qd1-h5 f7-f5 2.Ne3-c4 Nd5-f6 3.Qh5-e2
  µ  (-0.92)   Depth: 5   00:00:00  57kN
1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 f7-f5 4.Bg7-e5 Nd5-f4 5.Be5xf4 Be7xa3
  µ  (-0.91)   Depth: 5   00:00:01  124kN
1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 Kg8xg7 4.Ng3-f5+ e6xf5 5.Ne3xf5+
Kg7-f6 6.Qh5-h6+ Kf6-e5 7.Ra1-e1+ Nd5-e3 8.Qh6xe3+ Ke5-d5 9.Nf5xe7+
  ³  (-0.30)   Depth: 5   00:00:01  124kN
1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 Kg8xg7 4.Ng3-f5+ e6xf5 5.Ne3xf5+
Kg7-g8 6.Nf5-h6+ Kg8-g7 7.Nh6-f5+
  =  (0.00)   Depth: 6   00:00:02  524kN
1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 f7-f5 4.Bg7-e5 Be7-f6 5.Qh5-g6+
Kg8-h8 6.Ng3xf5 Bf6xe5 7.Qg6-h5+ Kh8-g8 8.Qh5-g4+ Kg8-h8 9.Qg4-h5+
  =  (0.00)   Depth: 9   00:01:19  30800kN
1.Qd1-h5 h7-h6 2.Bb2xg7 Nd5xe3 3.Qh5xh6 Bb7xg2+ 4.Kh1-g1 Qd8xd3 5.c2xd3 Be7-f6
  =  (0.01)   Depth: 9   00:01:23  31824kN
1.Qd1-h5 g7-g6 2.Qh5-e5 f7-f6 3.Qe5xe6+ Rf8-f7 4.Ra1-e1 Nd5-c7 5.Qe6-g4 Ra8-c8
  ²  (0.30)   Depth: 9   00:01:30  34585kN
1.Qd1-h5 g7-g6 2.Ne3-g4 Be7-g5 3.Qh5-h6 e6-e5 4.Bb2xe5 f7-f6 5.Qh6xg5 Kg8-h8
  ²  (0.70)   Depth: 10   00:02:19  52802kN
1.Qd1-h5 f7-f5 2.Ng3xf5 e6xf5 3.Ne3xf5 Rf8-f6 4.Nf5xe7+ Qd8xe7 5.Qh5xh7+ Kg8-f8
6.Bb2xf6 g7xf6 7.Qh7xe7+ Kf8xe7 8.Rf1-e1+ Ke7-d7 9.Ra1-d1
  ±  (0.91)   Depth: 10   00:02:33  57852kN

(Blass, Tel-aviv 26.12.2002)


Uri




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