Author: Uri Blass
Date: 07:02:05 09/28/00
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On September 28, 2000 at 09:52:43, Vincent Lejeune wrote: >On September 28, 2000 at 09:44:41, Uri Blass wrote: > >>On September 28, 2000 at 07:15:45, Vincent Lejeune wrote: >> >>>I would suggest a new type of "swindle mode" : the method is based on 1) make >>>the right move difficult to find for a human and 2) play quickly to put pressure >>>on human >>> >>>Here's the Idea : if an endgame is a tablebase draw, select all the drawing >>>moves and explore them only in tablebase to measure where the human will have >>>the hardest work to do : calculate, for all this drawing moves, with iterative >>>deepening, the worst ratio (number of drawing moves for human divide by number >>>of possible moves for human) for the human in the tree, because a narrower path >>>is difficult to follow (see the game Deep Thought-Alex Fishbein post some days >>>ago: where human had only one drawing move he didn't find it). The depth still >>>to be dertimined may be 5 plies, may be 10 or simply play right after the >>>human's move to put maximum pressure. >>> >>>This method exploit the main point of tablebase eg : the precision allied with >>>the speed; where the human brain get kill by machine. >>> >>>I hope that Bob will test this algorithm for Crafty , I'm confident in it :) >>> >>>If I was not enough clear please tell me... >>> >>>Best regards >>>Vincent Lejeune >> >>I do not understand >> >>Here is a possible position KRB vs KR. >>[D]8/7R/2k2K2/5B2/8/8/8/2r5 w - - 0 1 >> >>After Rc7+ black has exactly one drawing move out of 5. >> >>Do you suggest Crafty to play Rc7+ because the ratio is probably the best with >>this move or do you suggest to search deeper in order to calculate the best >>ratio that you can force in 5 plies assuming the opponent play good moves? >> >>Uri > >You overlooked one point : "select all the drawing moves and explore them" The way to explore them should be defined. Do you suggest to analyze them to a small depth in order to see that they do not lose material and that the opponent cannot force a drawn KB vs K? Uri
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