Author: Drexel,Michael
Date: 09:16:19 09/16/03
Go up one level in this thread
On September 16, 2003 at 11:54:09, Anthony Cozzie wrote:
>On September 16, 2003 at 11:50:35, Drexel,Michael wrote:
>
>>On September 16, 2003 at 08:38:33, scott farrell wrote:
>>
>>>On September 16, 2003 at 06:25:59, Drexel,Michael wrote:
>>>
>>>>On September 16, 2003 at 06:10:13, scott farrell wrote:
>>>>
>>>>>[d] r3r1k1/1b3pbp/2p2np1/1p1p1q2/pP1Pp3/P1P1P1PP/1B2QPK1/3RRNN1 b - - 0 107
>>>>>
>>>>>If a human is playing white, and just moves d1d2, and d2d1, can this position be
>>>>>broken open?
>>>>
>>>>Without analysis I dare to say the position is completely lost for white.
>>>>h5,Bc8,Bf8,Bd6
>>>>Black is more or less a piece up and should win.
>>>>
>>>>Michael
>>>>
>>>
>>>Isnt that roughly the line crafty played that I showed below. But I dont see the
>>>continuation, and neither does crafty.
>>>
>>>How do you stop white from playing d1d2, d2d1 ?
>>>
>>>Scott
>>
>>In this position almost any move order will finally stop white from playing
>>d1d2,d2d1 because checkmate ends the game :)
>>
>>In principle your program should avoid pawn chains against humans.
>>If your program plays for example 1.e4 c6 2.d4 d5 3.e5 (no book of course) or
>>1.c3 e5 2.d4 e4 then there is something wrong.
>>
>>Michael
>
>That is the crafty approach, and it certainly works. I'd rather teach Zappa to
>understand them, though. I don't see any reason why a computer can't play closed
>positions well. Its just a matter of writing some eval code.
>
>anthony
In closed positions long-term plans are often important and this is not a matter
of writing some eval code.
Of course the human opponent will blunder more often in open positions and the
computer will make less serious strategical mistakes.
Michael
>
>>
>> >
>>>>>
>>>>>Do any engines detect this behaviour and play differently?
>>>>>
>>>>>There is a player on ICC that is pretty good at doing this to my engine, and I
>>>>>am trying to stop him with coding.
>>>>>
>>>>>I play with white it with crafty 19.3, with d1d2, d2d1, and this is the
>>>>>continuation:
>>>>>
>>>>>[FEN "4r1k1/1b3pbp/r1p2np1/1p1p1q2/pP1Pp3/P1P1P1PP/1B1Q1PK1/3RRNN1 b - - 0 1"]
>>>>>{--------------
>>>>>. . . . r . k .
>>>>>. b . . . p b p
>>>>>r . p . . n p .
>>>>>. p . p . q . .
>>>>>p P . P p . . .
>>>>>P . P . P . P P
>>>>>. B . Q . P K .
>>>>>. . . R R N N .
>>>>>black to play
>>>>>--------------}
>>>>>1... Bc8 2. Qe2 Qg5 3. Rd2 Bf5 4. Rdd1 Bf8 5. Rd2 Bd6 6. Rdd1 Qh6 7. Rd2
>>>>>Raa8 8. Rdd1 Rad8 9. Rd2 Re7 10. Rdd1 Be6 11. Rd2 Ree8 12. Rdd1 Rc8 13. Rd2
>>>>>Ra8 14. Rdd1 Rad8 15. Rd2 Rf8 16. Rdd1 Rfe8 17. Rd2 Rc8 18. Rdd1 Red8 19.
>>>>>Rd2
>>>>>*
>>>>>
>>>>>with no changes in site:
>>>>>depth=10 14/36 -1.42 19. ... Re8 20. Nh2 Bf5 21. Qf1 Ra8 22. Kh1 Rad8 23. Qg2
>>>>>Qg5 24. Ne2
>>>>>
>>>>>Scott
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