Author: Uri Blass
Date: 09:08:50 12/29/05
Go up one level in this thread
On December 29, 2005 at 12:01:27, Uri Blass wrote:
>On December 29, 2005 at 11:48:48, Sune Larsson wrote:
>
>>Thanks to Joseph who has played 80 games Rybka-F9 and Rybka-Fruit - endgame
>>test. A lot of interesting information has been collected. One could expect good
>>and bad endings by these programs - but maybe not this...
>>
>>[Event "Rybka-Fritz9 NunnE 40 4'"]
>>[Site "Wollongong"]
>>[Date "2004.12.30"]
>>[Round "28.1"]
>>[White "Fritz 9"]
>>[Black "Rybka 1.0 Beta 32-bit"]
>>[Result "1-0"]
>>[Annotator "1.06;0.29"]
>>[SetUp "1"]
>>[FEN "6k1/2p3np/1p1p2p1/3P4/1PPK1R2/6PB/7P/4r3 w - - 0 1"]
>>[PlyCount "11"]
>>[EventDate "2005.12.28"]
>>
>>{GenuineIntel 447 MHz W=16.4 ply; 236kN/s; 477 TBAs B=18.4 ply; 65kN/s} 1. Bd7
>>{1.06/13 132} Nh5 {0.29/14 55} 2. Be6+ {(Rf3) 4.03/15 115} Rxe6 {
>>(Kg7) 2.72/16 191} 3. dxe6 {7.12/16 74} Nxf4 {10.00/21 1126} 4. gxf4 {
>>7.02/16 61} Kf8 {9.94/18 23} 5. Kd5 {7.39/16 55} Ke7 {11.03/19 311} 6. b5 {
>>7.58/18 84} 1-0
>>
>>Rybka's first move 1.-Nh5???? is a mega-gross error that loses right on the
>>spot. And showing only a small advantage for white (+0.29). I hope it looks
>>different with faster hardware. Misjudging the pawn endgame or what?
>>
>>/S
>
>Rybka needs depth 18 to find that Nh5 is losing
>After 7 minutes of search it still did not change it's mind.
>
>Fritz 9 - Rybka 1.0 Beta 32-bit, Rybka-Fritz9 NunnE 40 4' 2005
>[D]6k1/2pB2np/1p1p2p1/3P4/1PPK1R2/6P1/7P/4r3 b - - 0 1
>
>Analysis by Rybka 1.0 Beta 32-bit:
>
>1...Nh5
> ± (0.74) Depth: 3 00:00:00
>1...Nh5
> ² (0.59) Depth: 4 00:00:00
>1...Nh5 2.Rf3
> ² (0.63) Depth: 5 00:00:00
>1...Nh5 2.Rf3 Kg7
> ² (0.54) Depth: 6 00:00:00 5kN
>1...Nh5 2.Rf3 Kg7 3.Re3
> ² (0.37) Depth: 7 00:00:00 11kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3
> ² (0.51) Depth: 8 00:00:00 22kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6
> ² (0.34) Depth: 9 00:00:00 52kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Ba4
> ² (0.35) Depth: 10 00:00:00 103kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Re2 Rc1+ 6.Kd3
> ² (0.36) Depth: 11 00:00:01 184kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Re2 h6 6.Ba4
> ² (0.34) Depth: 12 00:00:02 380kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Re2 Kf7 6.Be6+
> ² (0.28) Depth: 13 00:00:04 947kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Re2 Kf7 6.Be6+
> ² (0.29) Depth: 14 00:00:07 1551kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Rc1+ 5.Kb3 Nf6 6.Re2
> = (0.25) Depth: 15 00:00:16 3288kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Rc1+ 5.Kb3 Nf6 6.Re2
> = (0.25) Depth: 16 00:00:25 5133kN
>1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Re2 Rf1 6.Bb5
> = (0.24) Depth: 17 00:00:49 10104kN
>1...Nh5 2.Be6+ Rxe6 3.dxe6 Nxf4 4.gxf4 h6 5.Kd5 Kf8 6.b5
> +- (3.97) Depth: 18 00:02:15 30129kN
>
>(, 29.12.2005)
Next lines in the analysis
1...Re2 2.Kd3 Re7 3.Bg4 h5 4.Bc8 Rf7 5.Ke3 Re7+ 6.Kf3
² (0.61) Depth: 18 00:08:11 105113kN
1...Re7 2.Bg4 h5 3.Bf3 Nf5+ 4.Kc3 Re3+ 5.Kd2 Ra3 6.Bxh5
= (0.19) Depth: 18 00:10:43 137450kN
1...Re7 2.Bg4 h5 3.Bf3 Nf5+ 4.Kc3 Re3+ 5.Kd2 Ra3 6.Bxh5
= (0.20) Depth: 19 00:11:03 141845kN
(, 29.12.2005)
For comparison slightly positional shows the following analysis
Fritz 9 - Rybka 1.0 Beta 32-bit, Rybka-Fritz9 NunnE 40 4' 2005
6k1/2pB2np/1p1p2p1/3P4/1PPK1R2/6P1/7P/4r3 b - - 0 1
Analysis by Rybka 1.0 Beta 32-bit:
1...Nh5
± (0.74) Depth: 3 00:00:00
1...Nh5
² (0.59) Depth: 4 00:00:00
1...Nh5 2.Rf3
² (0.63) Depth: 5 00:00:00
1...Nh5 2.Rf3 Kg7
² (0.54) Depth: 6 00:00:00 5kN
1...Nh5 2.Rf3 Kg7 3.Re3
² (0.37) Depth: 7 00:00:00 11kN
1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3
² (0.51) Depth: 8 00:00:00 22kN
1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6
² (0.34) Depth: 9 00:00:00 51kN
1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Ba4
² (0.35) Depth: 10 00:00:00 103kN
1...Nh5 2.Rf3 Kg7 3.Re3 Rd1+ 4.Kc3 Nf6 5.Re2 Kf7
² (0.35) Depth: 11 00:00:01 185kN
1...Nh5 2.Rf3 Kg7 3.Ba4 Nf6 4.h4 Kf7 5.Re3 Rc1
² (0.27) Depth: 12 00:00:02 489kN
1...Nh5 2.Be6+ Rxe6 3.dxe6 Nxf4 4.gxf4 c6 5.b5 cxb5 6.cxb5
² (0.34) Depth: 13 00:00:05 1134kN
1...Nh5 2.Be6+ Rxe6 3.dxe6 Nxf4 4.gxf4 h6 5.Kd5 Kf8 6.b5
+- (1.44) Depth: 14 00:00:09 2083kN
1...Re2 2.Kd3 Re7 3.Bg4 h5 4.Bd1 Rf7 5.Ke4 Re7+ 6.Kf3
² (0.60) Depth: 14 00:00:17 3627kN
(, 29.12.2005)
It seems that vasik believes that these 4 plies are not important(otherwise he
would use slightly positional and not the default personality in the
tournament).
Uri
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