Author: Uri Blass
Date: 13:40:25 11/24/02
Go up one level in this thread
On November 24, 2002 at 14:39:01, Joachim Rang wrote:
>On November 24, 2002 at 13:52:18, Dieter Buerssner wrote:
>
>>On November 24, 2002 at 09:20:40, Thomas Blomquist wrote:
>>
>>
>>> 1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - - 0 1
>>
>>Yace, P4 2,53 needs 4:10 to find Qxg6 and 12:15 to see a mate score:
>>
>> 128692541 2:49.0 -1.80 11t 1.h5 Kh8 2.Qxg6 Rgc8 3.Bd3 Ng5 4.Rha1 Ne4 5.Ra7
>> Rb7 6.Nxc6 {190}
>> 202308717 4:10.1 -1.79 11t+ 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Ra8 10.Rd1H Ra1H 11.Rxa1H Qa7H 12.Rxa7H
>> Bxh4H {180}
>> 202550165 4:10.6 -1.53 11++ 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Ra8 10.Rd1 Ra1 11.Rxa1 Qa7 12.Rxa7 Bxh4
>> {180}
>> 203135830 4:11.7 -0.53 11++ 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Ra8 10.Rd1 Ra1 11.Rxa1 Qa7 12.Rxa7 Bxh4
>> {180}
>> 246654198 4:57.0 1.31 11t 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Ra8 10.Rd1 Ra1 11.Rxa1 Qa7 12.Rxa7 Kxf1
>> 13.Nxc6 {260}
>> 256099140 5:08.4 1.31 11. 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Ra8 10.Rd1 Ra1 11.Rxa1 Qa7 12.Rxa7 Kxf1
>> 13.Nxc6 {260}
>> 257626082 5:10.6 1.71 12++ 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Ra8 10.Rb1 Ra1 11.Kxa1 Qa7+ 12.Kb2 Qa1+
>> 13.Rxa1 g5
>> 258017610 5:11.2 2.71 12++ 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Ra8 10.Rb1 Ra1 11.Kxa1 Qa7+ 12.Kb2 Qb8
>> 13.Bxb8 Be8 14.Nxd5 exd5H 15.Bxb5+H Kg2H
>> 16.Bxe8H Bxd4H {350}
>> 679828407 12:15.0 7.20 12t 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Qa7 10.Rb1 Qa3+ 11.Kxa3 Ra8+ 12.Kb3 Ra1
>> {HT} {-240}
>> 689441495 12:24.8 7.20 12. 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Qa7 10.Rb1 Qa3+ 11.Kxa3 Ra8+ 12.Kb3 Ra1
>> {HT} {-240}
>> 689729549 12:25.2 7.60 13++ 1.Qxg6+ Kh8 2.Bd3 Ng5 3.hxg5 Qf7 4.Qxf7 Ra8
>> 689794007 12:25.4 8.60 13++ 1.Qxg6+ Kh8 2.Bd3 Ng5 3.hxg5 Qf7 4.Qxf7 Ra8
>> 689794247 12:25.4 Mat15 13++ 1.Qxg6+ Kxg6 2.Bd3+ Kh5H 3.g4+H Kxg4H 4.Rg1+H
>> Kh3H 5.Bf1+H Kh2H 6.Bg3+H Kxg1H 7.Ra1H Ra8H
>> 8.Rd1H Ra1H 9.Rxa1H Qa7H 10.Rb1H Qa3+H 11.Kxa3H
>> Ra8+H 12.Kb2H Ra1H 13.Rxa1H {260}
>>2066667142 32:38.8 Mat15 13t 1.Qxg6+ Kxg6 2.Bd3+ Kh5H 3.g4+H Kxg4H 4.Rg1+H
>> Kh3H 5.Bf1+H Kh2H 6.Bg3+H Kxg1H 7.Ra1H Ra8H
>> 8.Rd1H Ra1H 9.Rxa1H Qa7H 10.Rb1H Qa3+H 11.Kxa3H
>> Ra8+H 12.Kb2H Ra1H {HT} {-240}
>>2192866765 34:29.2 Mat15 13. 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Qa7 10.Rb1 Qa3+ 11.Kxa3 Ra8+ 12.Kb2 Ra1
>> {HT} {-240}
>>2554587345 1:41:22 Mat15 14t 1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3
>> 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rd1 Ra1
>> 9.Rxa1 Qa7 10.Rb1 Qa3+ 11.Kxa3 Ra8+ 12.Kb2 Ra1
>> 13.Rxa1 f2 14.Bh3+ f1=Q 15.Rxf1# {340}
>>
>>Regards,
>>Dieter
>
>
>wow, this is fast...
>Yace does a lot of check extensions, does it?
I believe that it does also other extensions.
Checks extension are not enough to see mate fast and having good rules when not
to prune can be productive(usually programs should prune when the score says a
big tactical loss and the remaining depth is small)
Movei00_778b cannot see the mate in a reasonable time even after
1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3 5.Bf1+ Kh2
Inspite of a lot of check extensions it needs a lot of time to see a positional
advantage or maybe less check extensions can help it to find the mate faster.
depth=11 -5.03 f2g3 h2g1 a5a1 b8a8 a1b1 a8a1 b1a1 g8a8 a1b1 a8a1 b1a1 f3f2 b4c6
d7c6 f1b5 f2f1q b5c6
Nodes: 14054219 NPS: 132925
Time: 00:01:45.73
depth=11 -5.02 g1g4
Nodes: 38501525 NPS: 131171
Time: 00:04:53.52
depth=11 -3.43 g1g4 f6d4 f2g3 h2h1 a5a1 d7a7 a1a7 d4a7 g3b8 a7b8 b4c6 h6h5 g4g6
Nodes: 94099861 NPS: 126456
Time: 00:12:24.13
depth=12 -0.56 g1g4 f6d4 f2g3 h2h1 g4d4 d7d6 g3d6 f7d6 b4c6 b8a8 a5a8 g8a8 f1h3
a8c8 d4d1 h1h2
Nodes: 236582061 NPS: 123752
Time: 00:31:51.74
depth=12 -0.55 f2g3
Nodes: 244811533 NPS: 124209
Time: 00:32:50.95
depth=12 +0.92 f2g3 h2g1 a5a1 d7a7 a1b1 a7a1 b1a1 b8a8 a1c1 a8a1 b2a1 f6g5 h4g5
g8a8 a1b1
Nodes: 259774849 NPS: 124757
Time: 00:34:42.23
Uri
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.