Author: martin fierz
Date: 08:42:12 02/08/01
Go up one level in this thread
On February 08, 2001 at 09:57:40, Robert Hyatt wrote:
>On February 08, 2001 at 06:25:52, Uri Blass wrote:
>
>>On February 08, 2001 at 06:17:09, martin fierz wrote:
>>
>>>On February 08, 2001 at 05:26:40, Uri Blass wrote:
>>>
>>>>On February 08, 2001 at 04:24:11, David Blackman wrote:
>>>>
>>>>>On February 07, 2001 at 16:41:28, Tanya Deborah wrote:
>>>>>
>>>>>>
>>>>>>
>>>>>>Hi!
>>>>>>
>>>>>>I am playing a new match in checkers between the 2 strongest Spanish checkers
>>>>>>programs of the world...
>>>>>
>>>>>Just curious, is "Spanish checkers" the same game as "Polish Draughts",
>>>>>"International Draughts", "Damen" etc?
>>>
>>>there are about a zillion different rules for checkers - a nice overview can be
>>>found on
>>>
>>>http://www.triplejump.net/rules.shtml
>>>
>>>>>According to people who have tried, it is a bit harder to
>>>>>write a strong program
>>>>>for it than for chess.
>>>>
>>>>I think that the opposite is truth.
>>>>I remember that I read that chinook won against the world champion in this game
>>>>before Deeper blue(I read that the result was 2:1 and 67 draws).
>>>
>>>it depends on the variation. the main differences are the board sizes (8x8,
>>>10x10 and even 12x12), and the rule for kings. in some variations, kings move
>>>like kings in chess, in others, like queens. of course the queens-variation
>>>allows many more moves than the kings-variation. if you play a queens-variation
>>>on a 10x10 board ('international checkers', 20 pieces each) you have *much* more
>>>complexity than if you play a kings-variation on an 8x8 board (as my program
>>>does, 'straight checkers'). i think vincent diepeveen's checkers program plays
>>>international checkers, so he might be able to tell us what the difference in
>>>branching factor is compared to chess. in straight checkers you get *lots* of
>>>draws. chinook never really beat the world champion (tinsley) over the board,
>>>tinsley got ill during the rematch (he won the first match) after six draws and
>>>forfeited his title. he died shortly after this. chinook then won a match
>>>against the world number two with a close result.
>>
>>If number 1 died then number 2 automatically becomes number 1 so chinook played
>>against number 1.
>>
>>Uri
>
>
>When Tinsley died, Chinook _became_ #1.
>
>In fact, it became #1 _before_ Tinsley died as he resigned the match because
>he was convinced Chinook was better than him at that point in time.
tinsley resigned the match because he was feeling ill. at the time schaeffer
speculated that tinsley was faking it because he was afraid, but in the hospital
they diagnosed a cancer. tinsley died shortly afterwards. schaeffer himself
would not support your statement above, at least, there is nothing like that
mentioned in 'one jump ahead'
cheers
martin
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