Author: Jeremiah Penery
Date: 13:57:41 10/19/99
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On October 19, 1999 at 16:48:36, walter irvin wrote: >On October 19, 1999 at 10:30:18, rich buska wrote: > >>i understand that is a 1/2 move but what does equal in elo >> >>2 ply 1100 ? >>4 ply 1400 ? >>6 ply 1600? >>8 ply 1800? etc? > >depends on program , but i noticed that you raise each ply by 200 .during the >first few ply may be worth more than 200 . plys deeper than 7 are worth less >usually .plys greater than 12 are worth even less vs humans .against computer >200 might work out , but not vs humans. The available evidence disagrees. In "Crafty goes deep" and "DarkThought goes deep" (JICCA, sometime), it is shown that every increase in depth is relatively equal with regard to picking a new best move. Therefore, the ratings difference should be roughly equal for each ply as well. Jeremiah
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