Author: Vincent Lejeune
Date: 07:17:34 09/28/00
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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 some numbers from your example : after Rh8 : 9 moves draw , 9 lose after Ke5 : 10 moves draw , 4 lose after Rh2 : 15 moves draw , 3 lose after Rh6 : 15 moves draw , 3 lose after Rc7 : 1 moves draw , 4 lose and so on ... in this subset of moves, Rh8 is the best for me
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