Author: Robert Hyatt
Date: 10:14:18 01/16/04
Go up one level in this thread
On January 15, 2004 at 23:20:02, Drexel,Michael wrote:
>On January 15, 2004 at 20:41:15, Robert Hyatt wrote:
>
>>On January 15, 2004 at 17:07:01, Drexel,Michael wrote:
>>
>>>On January 15, 2004 at 16:27:13, Robert Hyatt wrote:
>>>
>>>>On January 15, 2004 at 15:09:07, Geoff wrote:
>>>>
>>>>>Hi
>>>>>
>>>>>I suspect Mr Kasparov would probably want a few dollars before considering that
>>>>>option.
>>>>>It made me wonder who is the strongest human opponent Crafty has played against?
>>>>>I would be intrigued to know what the match score was ?
>>>>>
>>>>> Geoff
>>>>>
>>>>>PS
>>>>>Thanks to Prof. Hyatt for the links to the online papers. Some interesting
>>>>>reading material there.
>>>>
>>>>
>>>>It's played Shirov a lot of blitz. Won most. It's played Karpov some
>>>>games and won them all but the sample size was small and it was a couple of
>>>>years ago. It has played Yasser, Benjamin, Kamsky, I'd hate to try to name
>>>>them all...
>>>>
>>>>It does very well at blitz, winning probably 90%. At game/30 it wins way
>>>>more than it loses. Beyond that, who knows...
>>>
>>>Has anyone ever beated Crafty in such a convincing way?
>>>The game was played immediately after reading your post. I saw no engine output
>>>and didn't analyze the opening before the game.
>>>But it helped a lot to know that Crafty will never take on g5. People on ICC
>>>who don't read CCC do not know this.
>>>
>>>Michael
>>>
>>>
>>>[Event "Blitz:10'+10""]
>>>[Site "AMD 1.6 Ghz"]
>>>[Date "????.??.??"]
>>>[Round "?"]
>>>[White "Drexel"]
>>>[Black "Crafty 19.08"]
>>>[Result "1-0"]
>>>[PlyCount "47"]
>>>[TimeControl "600+10"]
>>>
>>>{64MB, Shredder8.ctg, ATHLONXP} 1. c3 {0} b6 {0} 2. d4 {3} Bb7 {0} 3. Nf3 {3}
>>>e6 {0.51/12 57} 4. Bg5 {(e3) 7} Nf6 {0.22/12 40} 5. Nbd2 {6} Be7 {0} 6. e3 {
>>>(h4) 137} c5 {0} 7. Bd3 {(h3) 4} O-O {0} 8. Qe2 {(e4) 14} h6 {0.24/11 30} 9. h4
>>>{(Bh4) 26} cxd4 {0.52/10 29} 10. exd4 {3} Qc7 {0.61/10 26} 11. O-O-O {11} Nc6 {
>>>0.52/10 16} 12. Kb1 {6} Rac8 {0.60/10 22} 13. g4 {(Bxf6) 50} Nxg4 {0.25/10 28}
>>>14. Rdg1 {(Rhg1) 29} h5 {0.25/10 27} 15. Nh2 {(Rg2) 132} f6 {-0.22/10 35} 16.
>>>Nxg4 {(Be3) 28} hxg4 {0.69/10 50} 17. Qxg4 {23} f5 {1.55/9 5} 18. Qh5 {(Qg2) 87
>>>} Rf7 {1.81/10 34} 19. Nf3 {26} Bd6 {3.51/11 70} 20. Bc1 {(Be3) 90} Ne7 {
>>>3.91/10 53} 21. Ng5 {4} g6 {8.49/10 17} 22. Nxf7 {9} Bg3 {9.04/10 13} 23. Rxg3
>>>{(Nh6+) 13} Kxf7 {12.02/10 64} 24. Qh7+ {5} 1-0
>>
>>
>>It happens. But in long and serious games, the anti-trojan stuff is always
>>turned off by me, manually. It is really important for blitz games, where
>>the depth is not sufficient to avoid the mate when it is possible... On fast
>>hardware, I'd probably turn it off all the time, in fact... Except for bullet
>>games which is really the only place it had trouble with this before (2 1 games
>>for example).
>
>I don't think my attack in this game was unsound.
Neither do I.
>Crafty never had the chance to take that bishop.
I didn't look at that very carefully, I just took your comment to be
directed at the Trojan Horse code, and I wanted to point out that at
normal time controls, that is turned off, because it can easily see
the difficulties when it has enough time. This attack really only works
at bullet-type time controls on the kind of hardware I normally use on ICC.
>Knowing it will probably never take makes it just easier for me since I don't
>have to calculate those lines.
>
>[D] rn1q1rk1/pb1pbppp/1p2pn2/2p3B1/3P4/2PBPN2/PP1NQPPP/R3K2R b KQ - 0 8
>
>I delayed castling with Qe2 and Crafty played h6. That's a serious strategical
>mistake IMO. Chances are high that it would play h6 also on a Dual or Quad.
>
>You don't weaken your Kingside before White has castled short in this positions.
>Either you play h6 _before_ castling yourself (so that white is forced to move
>that bishop) or you play it after white has castled short. You don't play it at
>all if white has castled long.
>
>Michael
On my machine, it drops h6 inside 30 seconds and it doesn't go back to it. IE
Crafty knows exactly what you said about making luft (h6) which only creates a
target for the opponent to shoot at.
Here's the output on a dual xeon 2.8ghz with the current code:
7-> 0.62 0.37 1. ... h6 2. Bf4 g5 3. Be5 cxd4 4.
cxd4 d6 5. Bg3 <HT>
8 1.06 0.49 1. ... h6 2. Bf4 cxd4 3. cxd4 Nc6 4.
O-O Nb4 5. Bc4 Rc8
8 2.10 0.38 1. ... cxd4 2. exd4 h6 3. Bxf6 Bxf6
4. O-O-O d5 5. Kb1 Nd7 6. Rhe1
8-> 2.58 0.38 1. ... cxd4 2. exd4 h6 3. Bxf6 Bxf6
4. O-O-O d5 5. Kb1 Nd7 6. Rhe1 (s=4)
9 4.07 0.33 1. ... cxd4 2. exd4 Nd5 3. Bxe7 Qxe7
4. O-O-O Nf4 5. Qf1 Bxf3 6. Nxf3 Qd6
(s=3)
9-> 4.72 0.33 1. ... cxd4 2. exd4 Nd5 3. Bxe7 Qxe7
4. O-O-O Nf4 5. Qf1 Bxf3 6. Nxf3 Qd6
10 7.77 0.42 1. ... cxd4 2. exd4 h6 3. Bh4 Nc6 4.
O-O d5 5. Rfe1 Bd6 6. Bg3 Rc8 7. Bxd6
Qxd6
10 14.65 0.33 1. ... h6 2. Bh4 d6 3. dxc5 bxc5 4.
O-O Nbd7 5. Rad1 Ng4 6. Bxe7 Qxe7 7.
e4
10-> 14.65 0.33 1. ... h6 2. Bh4 d6 3. dxc5 bxc5 4.
O-O Nbd7 5. Rad1 Ng4 6. Bxe7 Qxe7 7.
e4 (s=2)
11 22.42 0.43 1. ... h6 2. Bf4 cxd4 3. cxd4 Nc6 4.
O-O Nb4 5. Bb5 a6 6. Bc4 d5 7. Bb3
11 42.98 0.26 1. ... cxd4 2. cxd4 Nd5 3. Bxe7 Qxe7
4. O-O d6 5. Rac1 Nc6 6. Ne4 Rac8 7.
Nfg5 f6 <HT>
11-> 44.37 0.26 1. ... cxd4 2. cxd4 Nd5 3. Bxe7 Qxe7
4. O-O d6 5. Rac1 Nc6 6. Ne4 Rac8 7.
Nfg5 f6 <HT> (s=2)
12 1:11 0.31 1. ... cxd4 2. exd4 Nd5 3. Bxe7 Qxe7
4. O-O Nf4 5. Qe3 Nxd3 6. Qxd3 d6 7.
Rfe1 Nc6 8. Qe4
12-> 1:19 0.31 1. ... cxd4 2. exd4 Nd5 3. Bxe7 Qxe7
4. O-O Nf4 5. Qe3 Nxd3 6. Qxd3 d6 7.
Rfe1 Nc6 8. Qe4
13 2:03 0.28 1. ... cxd4 2. cxd4 Nc6 3. O-O d6 4.
a3 Rc8 5. Rac1 Nd5 6. Bxe7 Qxe7 7.
b4 f5 8. b5 Na5
13-> 2:46 0.28 1. ... cxd4 2. cxd4 Nc6 3. O-O d6 4.
a3 Rc8 5. Rac1 Nd5 6. Bxe7 Qxe7 7.
b4 f5 8. b5 Na5 (s=2)
IE until 14 secs it would not play h6, then it likes it until 42 seconds, and
then it won't come back to it in any reasonable time limit on my xeon...
Given enough time it might actually change to d5, as it looked at that move
longer and longer every iteration...
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