Author: Miguel A. Ballicora
Date: 12:27:50 01/04/02
Go up one level in this thread
On January 04, 2002 at 06:57:53, Uri Blass wrote:
>How much time do programs need to avoid 74.Nxb5
>Most programs need few seconds when
>Hiarcs7.32(48 Mbytes hash) needs almost 10 minutes on p800
>
>Shredder6 could not avoid Nxb5 even in 112 seconds
>based on the pgn of it's games against tiger aggresive.
>
>Shredder 6 - Gambit Tiger 2.0
>[D]8/5rbk/6q1/1p1Q4/1PpP2p1/2N2p2/5PP1/3R2K1 w - - 0 1
>
>Analysis by Hiarcs 7.32:
>
>74.Nxb5 fxg2 75.Kxg2
> +- (1.60) Depth: 1 00:00:00
>74.Nxb5 fxg2
> ± (1.23) Depth: 2/10 00:00:00
>74.Nxb5 fxg2 75.Qxg2
> ± (0.76) Depth: 2/10 00:00:00
>74.Nxb5 fxg2
> ± (1.01) Depth: 3/13 00:00:00
>74.Nxb5 fxg2
> ± (1.01) Depth: 3/14 00:00:00
>74.Nxb5 fxg2 75.Qxc4 Qf5 76.Rd2
> ± (1.07) Depth: 4/14 00:00:00
>74.Nxb5 fxg2
> ± (0.81) Depth: 5/16 00:00:00 8kN
>74.Nxb5 fxg2
> ± (0.81) Depth: 5/19 00:00:00 15kN
>74.Nxb5 Rf5
> ² (0.56) Depth: 6/21 00:00:00 74kN
>74.Nxb5 Rf5 75.Qd7 Rh5 76.Nd6
> = (-0.01) Depth: 6/23 00:00:01 100kN
>74.Nxb5 Rf5
> ³ (-0.26) Depth: 7/23 00:00:02 222kN
>74.Nxb5 Rf5 75.Qxc4 Qh5 76.Qc2 g3 77.gxf3 Qh2+
> ³ (-0.38) Depth: 7/25 00:00:02 279kN
>74.Nxb5 Rf5
> ³ (-0.63) Depth: 8/25 00:00:06 686kN
>74.Nxb5 Rf5
> ³ (-0.63) Depth: 8/27 00:00:08 837kN
>74.Nxb5 Rf5
> ³ (-0.38) Depth: 9/27 00:00:39 3940kN
>74.Nxb5 Rf5 75.Qxc4 Qh5 76.Qc2 g3 77.gxf3
> ³ (-0.38) Depth: 9/29 00:00:43 4378kN
>74.Nxb5 Rf5
> ³ (-0.63) Depth: 10/29 00:01:20 8215kN
>74.Nxb5 Rf5 75.Qxc4 Qh5 76.Qc7 g3 77.Qxg3 Rg5 78.Nc3 Rxg3 79.fxg3
> -+ (-1.59) Depth: 10/30 00:02:50 17774kN
>74.Re1 fxg2 75.Ne4 Rf5 76.Qb7 Kg8 77.Kxg2 Bxd4 78.Rd1 Bg7 79.Nd6 Rf3 80.Nxb5
> µ (-0.88) Depth: 10/30 00:09:45 59913kN
>74.Ne4 Rf5 75.Qd7 Rf4 76.Ng3 Qf7 77.Qxf7 Rxf7 78.Ne4 Rf4 79.Ng5+ Kg8 80.Ne6 Re4
>81.Nxg7 Kxg7
> ³ (-0.66) Depth: 10/30 00:15:51 94551kN
>
>(Blass, Tel-aviv 04.01.2002)
>
>Uri
Gaviota needs 40 seconds on a pIII 800mhz to avoid playing Nxb5.
Starts failing low and solves it at 207 seconds.
Miguel
Go to xboard/winboard mode
setboard 8/5rbk/6q1/1p1Q4/1PpP2p1/2N2p2/5PP1/3R2K1 w - - 0 1
d
+-----------------+
| . . . . . . . . |
| . . . . . r b k |
| . . . . . . q . |
| . x . Q . . . . |
| . o x o . . x . |
| . . N . . x . . |
| . . . . . o o . |
| . . . R . . K . |
+-----------------+
analyze
123 1: 0.0 +0.04 Nc3xb5
1026 2: 0.0 +0.09 Nc3xb5 f3xg2 Qd5xg2
2662 3: 0.0 +0.46 Nc3xb5 f3xg2 Qd5xc4 Rf7-f5
Kg1xg2
6063 4 0.1 :-( Nc3xb5
7673 4 0.1 :-(
8584 4 0.1 -0.00 Nc3xb5 g4-g3 Rd1-f1 f3xg2
Qd5xg2
9091 4: 0.1 -0.00 Nc3xb5 g4-g3 Rd1-f1 f3xg2
Qd5xg2
14124 5 0.2 +0.04 Nc3xb5 g4-g3 f2xg3 f3-f2
Kg1-f1 Rf7-f5 Qd5xc4 Qg6xg3
20656 5: 0.2 +0.04 Nc3xb5 g4-g3 f2xg3 f3-f2
Kg1-f1 Rf7-f5 Qd5xc4 Qg6xg3
35848 6 0.4 +0.04 Nc3xb5 g4-g3 f2xg3 f3-f2
Kg1-f1 Rf7-f5 Qd5xc4 Qg6xg3
<-transp
44559 6: 0.5 +0.04 Nc3xb5 g4-g3 f2xg3 f3-f2
Kg1-f1 Rf7-f5 Qd5xc4 Qg6xg3
<-transp
124680 7 1.4 +0.00 Nc3xb5 g4-g3 g2xf3 g3xf2
Kg1xf2 Qg6-c2 Kf2-g3 Qc2-g6
Kg3-f2
218159 7: 2.3 +0.00 Nc3xb5 g4-g3 g2xf3 g3xf2
Kg1xf2 Qg6-c2 Kf2-g3 Qc2-g6
Kg3-f2
391410 8 4.1 +0.00 Nc3xb5 g4-g3 g2xf3 g3xf2
Kg1xf2 Qg6-c2 Kf2-g3 Qc2-g6
Kg3-f2
608588 8: 6.3 +0.00 Nc3xb5 g4-g3 g2xf3 g3xf2
Kg1xf2 Qg6-c2 Kf2-g3 Qc2-g6
Kg3-f2
1031336 9 10.8 +0.00 Nc3xb5 g4-g3 g2xf3 g3xf2
Kg1xf2 Qg6-c2 Kf2-g3 Qc2-g6
Kg3-f2
1701177 9: 17.5 +0.00 Nc3xb5 g4-g3 g2xf3 g3xf2
Kg1xf2 Qg6-c2 Kf2-g3 Qc2-g6
Kg3-f2
3803257 10 40.3 :-( Nc3xb5
12381543 10 134.0 :-(
18914245 10 207.1 -0.69 Rd1-e1 f3xg2 Kg1xg2 Qg6-f6
Re1-f1 Qf6-f5 Qd5-c6 Rf7-f6
Qc6-b7 Rf6-d6 Rf1-h1 Kh7-g8
Qb7xb5
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