Author: Slater Wold
Date: 20:48:15 10/25/01
Go up one level in this thread
On October 25, 2001 at 15:39:19, Uri Blass wrote:
>On October 25, 2001 at 15:25:30, Dann Corbit wrote:
>
>>On October 25, 2001 at 11:41:28, Uri Blass wrote:
>>
>>>How much time does your program need to avoid Nxg3?
>>>
>>>Here is Junior7's analysis on p200 after some learning
>>>It has no problem to avoid Ng3 after learning 18...Nxg3 19.hxg3 Bxg3 20.f4 Qh4
>>>21.Rf3 Qh2+ 22.Kf1.
>>>
>>>In the game of the match that a link for it is posted elsewhere
>>>Shredder5.32 could not avoid 18...Nxg3 and lost against Fritz7
>>>
>>>
>>>New game - Junior 7
>>>[D]1r3rk1/pbbnq1pp/1p6/PPpp1p2/3Pn3/3NNPP1/2Q1P1BP/R1B2RK1 b - - 0 1
>>
>>Yace:
>>
>>title "King Safety (Uri Blass 10/25/01 @11:41:28)"
>>Stored 8 learned positions into hash table
>>solution Nd6
>>usetime = 998.00, mintime = 998.00 maxtime = 998.00 tl 998.00 ml 0
>> 196 0.003 -1.19 1t 1...Bxg3 2.fxe4 dxe4 3.Nxc5 bxc5 4.hxg3 cxd4
>> {-190}
>> 266 0.006 -0.84 1t 1...Nxg3 2.hxg3 Bxg3 {-180}
>> 714 0.008 0.18 1t 1...f4 2.Nxd5 Bxd5 3.fxe4 Bxe4 4.Bxe4 Qxe4 {0}
>> 861 0.010 0.20 1t 1...Nd6 2.axb6 Bxb6 3.dxc5 Nxc5 {0}
>> 894 0.010 0.20 1. 1...Nd6 2.axb6 Bxb6 3.dxc5 Nxc5 {0}
>> 1134 0.011 0.09 2t 1...Nd6 2.Bd2 Nxb5 3.axb6 {0}
>> 1179 0.012 0.18 2t+ 1...f4 2.Nxd5 Bxd5H 3.fxe4H Bxe4H 4.Bxe4H Qxe4H
>> {0}
>> 1223 0.012 0.18 2t 1...f4 2.Nxd5 Bxd5H 3.fxe4H Bxe4H 4.Bxe4H Qxe4H
>> {0}
>> 1458 0.014 0.18 2. 1...f4 2.Nxd5 Bxd5 3.fxe4 Bxe4 4.Bxe4 Qxe4 {0}
>> 6694 0.066 0.18 3t 1...f4 2.Nxd5 Bxd5 3.fxe4H Bxe4H 4.Bxe4H Qxe4H
>> {0}
>> 9101 0.071 0.18 3. 1...f4 2.Nxd5 Bxd5 3.fxe4 Bxe4 4.Bxe4 Qxe4 {0}
>> 17511 0.101 0.06 4t 1...f4 2.a6 Ba8 3.Nxd5 {-80}
>> 33406 0.155 0.06 4. 1...f4 2.a6 Ba8 3.Nxd5 {-80}
>> 43020 0.182 -0.34 5-- 1...f4 2.gxf4 Bxf4 3.fxe4 dxe4 {-260}
>> 50111 0.206 -1.12 5t 1...f4 2.gxf4 Nd6 3.dxc5 Nxb5 4.cxb6 {-160}
>> 56777 0.226 -1.11 5t+ 1...Nd6 2.a6 Ba8 3.Bd2
>> 114781 0.447 0.11 5t 1...Nd6 2.f4 Nxb5 3.Nxd5 Qd6H 4.Be3H {0}
>> 143375 0.527 0.11 5. 1...Nd6 2.f4 Nxb5 3.Nxd5 Qd6 4.Be3 {0}
>> 345034 1.228 -0.12 6t 1...Nd6 2.dxc5 Nxb5 3.axb6 axb6 4.Qb3 Nd4
>> 5.Nxd5 Qxe2 {0}
>> 1020439 3.535 -0.12 6. 1...Nd6 2.dxc5 Nxb5 3.axb6 axb6 4.Qb3 Nd4
>> 5.Nxd5 Qxe2 {0}
>> 1363286 4.644 -0.39 7t 1...Nd6 2.dxc5 Nxb5 3.Qb2 f4 4.axb6 axb6 5.gxf4
>> {-80}
>> 2968525 9.824 -0.39 7. 1...Nd6 2.dxc5 Nxb5 3.Qb2 f4 4.axb6 axb6 5.gxf4
>> {-80}
>> 3855310 12.615 -0.72 8t 1...Nd6 2.dxc5 bxc5 3.Nxc5 Nxc5 4.Qxc5 Rfc8
>> 5.Qd4 Nxb5 6.Nxf5 {-80}
>> 9808086 33.855 -0.72 8. 1...Nd6 2.dxc5 bxc5 3.Nxc5 Nxc5 4.Qxc5 Rfc8
>> 5.Qd4 Nxb5 6.Nxf5 {-80}
>> 13233369 46.495 -0.65 9t 1...Nd6 2.dxc5 bxc5 3.Nxc5 Nxc5 4.Qxc5 Rfc8
>> 5.Qd4 Nxb5 6.Nxf5 Qe5 {-80}
>> 24515539 1:25.0 -0.65 9. 1...Nd6 2.dxc5 bxc5 3.Nxc5 Nxc5 4.Qxc5 Rfc8
>> 5.Qd4 Nxb5 6.Nxf5 Qe5 {-80}
>> 36989399 2:12.5 -0.58 10t 1...Nd6 2.dxc5 bxc5 3.Nxc5 Nxc5 4.Qxc5 Rfc8
>> 5.Qb4 Ba8 6.Qd4 Rxb5 7.Qxa7 {-80}
>> 67274469 4:01.8 -0.58 10. 1...Nd6 2.dxc5 bxc5 3.Nxc5 Nxc5 4.Qxc5 Rfc8
>> 5.Qb4 Ba8 6.Qd4 Rxb5 7.Qxa7 {-80}
>> 101382720 6:17.0 -0.53 11t 1...Nd6 2.dxc5 bxc5 3.Nxc5 Nxc5 4.Qxc5 Rfc8
>> 5.Qd4 Nxb5 6.Nxf5 Qe5 7.Qxe5 Bxe5 {-80}
>>[snip]
>Yace has no problem to solve it and I guess that the same is for Fritz and
>Crafty but Junior7 has big problems and the same is probably also true for
>shredder that lost the game because of 18...Nxg3
>
>The hardware for Junior7 is only p200 but even after 3 hours Junior has no idea
>that 18...Nxg3 is wrong because it overestimate white king sefety's problems.
>
>Usually king safety test positions are positions when the sacrifice is correct
>and this is the reason that I chose position when the sacrifice is wrong.
>
>New game - Junior 7
>[D]1r3rk1/pbbnq1pp/1p6/PPpp1p2/3Pn3/3NNPP1/2Q1P1BP/R1B2RK1 b - - 0 1
>
>Analysis by Junior 7:
>
>18...Nf2 19.Nxf2 f4
> +- (2.14) Depth: 3 00:00:01
>18...Nd6 19.a6 Ba8 20.dxc5
> ² (0.64) Depth: 3 00:00:01
>18...Nxg3 19.hxg3 Bxg3
> ² (0.43) Depth: 3 00:00:01
>18...Ng5 19.a6 Ba8
> ² (0.37) Depth: 3 00:00:01
>18...Ng5 19.axb6 Bxb6 20.dxc5 Nxc5 21.Nxc5 Bxc5
> ² (0.35) Depth: 6 00:00:01 9kN
>18...Ng5 19.axb6 axb6 20.Ra7 c4 21.Nf2 Qe6
> ± (0.79) Depth: 9 00:00:02 233kN
>18...Nxg3!
> = (0.05) Depth: 9 00:00:03 356kN
>18...Nxg3! 19.hxg3 Bxg3 20.dxc5 bxc5 21.b6 Qh4 22.Qb2 axb6
> = (-0.01) Depth: 9 00:00:04 512kN
>18...Nxg3 19.hxg3 Bxg3 20.Bh3 Qh4 21.Kg2 c4 22.Nb2 g6 23.Rh1
> = (-0.03) Depth: 12 00:00:15 1889kN
>18...Nxg3 19.hxg3 Bxg3 20.Bh3 Qh4 21.Kg2 c4 22.Nb2 Bd6 23.Rh1 Qg3+ 24.Kf1 g6
>25.Bd2
> = (0.09) Depth: 14 00:02:15 16274kN
>18...Nxg3 19.hxg3 Bxg3 20.Bh3 Qh4 21.Kg2 c4 22.Nb2 Bf4 23.Nxf5 Rxf5 24.Bxf4 Rxf4
>25.Bxd7 Qg5+ 26.Kh2 Rh4+ 27.Bh3 Rxd4
> = (0.23) Depth: 15 00:08:02 48911kN
>18...Nxg3 19.hxg3 Bxg3 20.Bh3 Qh4 21.Kg2 c4 22.Nb2 Bc7 23.Rh1 Qg3+ 24.Kf1 g6
>25.a6 Ba8 26.Bd2
> ² (0.26) Depth: 16 00:21:17 132489kN
>18...Nxg3 19.hxg3 Bxg3 20.Bh3 Qh4 21.Kg2 c4 22.Nb2 Bd6 23.Rh1 Qg3+ 24.Kf1 g6
>25.Nbxc4 dxc4 26.Qxc4+ Kh8 27.Qe6
> = (0.24) Depth: 17 00:56:58 348264kN
>18...Nxg3 19.hxg3 Bxg3 20.Bh3 Qh4 21.Kg2 c4 22.Nf2 g6 23.axb6 axb6 24.Ra7 Rfe8
>25.Bd2
> ² (0.26) Depth: 18 02:39:16 1030918kN
>
>Uri
W,S - Deep Junior 7
1r3rk1/pbbnq1pp/1p6/PPpp1p2/3Pn3/3NNPP1/2Q1P1BP/R1B2RK1 b - - 0 1
Analysis by Deep Junior 7:
1...Nf2 2.Nxf2 f4
+- (2.14) Depth: 3 00:00:00
1...Nd6 2.a6 Ba8 3.dxc5
² (0.64) Depth: 3 00:00:00
1...Nxg3 2.hxg3 Bxg3
² (0.43) Depth: 3 00:00:00
1...Ng5 2.a6 Ba8
² (0.37) Depth: 3 00:00:00
1...Ng5 2.axb6 Bxb6 3.dxc5 Nxc5 4.Nxc5 Bxc5
² (0.35) Depth: 6 00:00:00 8kN
1...Ng5 2.axb6 axb6 3.Ra7 c4 4.Nf2 Qe6
± (0.79) Depth: 9 00:00:00 240kN
1...Nxg3!
= (0.05) Depth: 9 00:00:00 240kN
1...Nxg3! 2.hxg3 Bxg3 3.dxc5 bxc5 4.b6 Qh4 5.Qb2 axb6
= (-0.01) Depth: 9 00:00:00 267kN
1...Nxg3 2.hxg3 Bxg3 3.Bh3 Qh4 4.Kg2 c4 5.Nb2 g6 6.Rh1
= (-0.03) Depth: 12 00:00:02 1909kN
1...Nxg3 2.hxg3 Bxg3 3.Bh3 Qh4 4.Kg2 c4 5.Nb2 Bf4 6.Nxf5 Rxf5 7.Bxf4 Rxf4 8.Bxd7
Qg5+ 9.Kh2 Rh4+ 10.Bh3 Rxd4
= (0.23) Depth: 15 00:00:37 48988kN
1...Nxg3 2.hxg3 Bxg3 3.axb6 cxd4 4.bxa7 Qh4 5.Rd1 Rbc8 6.Qxc8 Bh2+ 7.Kf1 Rxc8
8.Nxf5 Qf6 9.Bh3 Ba8 10.Kg2 Bd6
² (0.37) Depth: 18 00:08:44 751596kN
1...Nd6 2.a6 Ba8 3.Nf4 Qf7 4.Rb1 Rbe8 5.Bd2 c4 6.Rfc1
² (0.32) Depth: 18 00:13:01 968002kN
(W, 25.10.2001)
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.