Author: Bernhard Bauer
Date: 00:07:26 02/29/00
Go up one level in this thread
On February 28, 2000 at 18:03:47, Howard Exner wrote:
>On February 28, 2000 at 09:15:21, Bernhard Bauer wrote:
>
>>Here are my results for Howards interestig test.
>>
>>Results for Howard Exner's PassedPawnSuite
>>Date: 02.25.2000
>>Hardware: 2xP3-450
>>Program: Crafty 17.8
>>Extensions: onerep=0.35 incheck=0.5 recapture=0.5
>> pushpp=0.75 threat=0.5 singular=0.5
>>Endgame table bases: 5 man
>>Hash tables: Hash=24Mb Pawn=8Mb Cache=8Mb
>>
>>No. Best move Solution time Different move
>> sec move depth time score
>> 1. Qg6 6.3
>> 2. Qd5 1.0
>> 3. Bxe5 37.3
>> 4. Bxg6 >3600 cxb5 18 3213 3.01
>> 5. Rxc6 3.2
>> 6. f6 8.3
>> 7. Rh1 11.3
>> 8. e5 1.0
>> 9. Rxf7 Qxf7 16.7
>>10. b5 538
>>11. Rxa6 >3600 Qe7 16 1204 0.50
>>12. b2 >600 Kd6 18 597 0.00
>>13. Nxa7 31.2
>>14. Rxf6 >3600 Rfe1 16 2829 0.21
>>15. cxb6 1.0
>>16. Bxb3 5.6
>>17. Nd4 170
>>18. Be6 8.6
>>19. Rxf6 >600 Qd4 16 329 1.23
>>20. Qc2 1.0
>>21. Kd4 0.0
>
>I've always liked this Kd4 problem. Tablebase programs like Crafty will
>make short work of this one but I think non tablebase programs will have trouble
>with this one.
>
>[D]8/Bpk5/8/P2K4/8/8/8/8 w - -
>
>>22. Kh7 23.9
>>23. Qg3 86
>>24. d6 0.0
>>
>>Solved within 5 sec: 7
>>Solved within 10 sec: 11
>>Solved within 30 sec: 14
>>Solved within 1 min: 16
>>Solved within 2 min: 17
>>Solved within 5 min: 18
>>Solved within 10 min: 19
>>Solved within 60 min: 19
>>
>>Kind regards
>>Bernhard
>
>Crafty has some quick solutions, to some difficult positions. Qg6 in #1,
>converting to a won ending, will give many strong programs a tough time.
>Crafty has some smart code that recognizes pawn majorities. In this Qg6 case,
>as previously discussed a few months ago, no other program came forward with Qg6
>as the first choice.
Here are Crafty's results with the original extensions.
Results for Howard Exner's PassedPawnSuite
Date: 02.29.2000
Hardware: 2xP3-450
Program: Crafty 17.8
Extensions: onerep=0.75 incheck=1 recapture=0.75
pushpp=1. threat=0.75 singular=0.75
Endgame table bases: 5 man
Hash tables: Hash=48Mb Pawn=16Mb Cache=8Mb
No. Best move Solution time Different move
sec move depth time score
1. Qg6 2.8
2. Qd5 0.1
3. Bxe5 8.3
4. Bxg6 >7200 cxb5 18 6524 3.22
5. Rxc6 5.0
6. f6 18.8
7. Rh1 (Qh4, Bxe3) 11.3 Bxe3 13 4053 >4.45
8. e5 0.6
9. Rxf7 Qxf7 4.4
10. b5 26.9
11. Rxa6 >7200 Qe7 16 5048 0.39
12. b2 >7200 Kd6 19 5302 0.00
13. Nxa7 35.3
14. Rxf6 >7200 Rfe1 15 4681 0.06
15. cxb6 0.0
16. Bxb3 5.3
17. Nd4 0.0
18. Be6 106
19. Rxf6 4542
20. Qc2 1.1
21. Kd4 0.0
22. Kh7 604
23. Qg3 95
24. d6 1.3
Solved within 5 sec: 10
Solved within 10 sec: 12
Solved within 30 sec: 15
Solved within 1 min: 16
Solved within 2 min: 18
Solved within 5 min: 18
Solved within 10 min: 18
Solved within 60 min: 19
Would you please have a look at position 7?
Crafty thinks that not only 1. Rh1 is winning, but also 1. Qh4 and even
1. Bxe3.
Kind regards
Bernhard
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.