Author: Derek Paquette
Date: 08:34:35 11/11/04
Go up one level in this thread
On November 11, 2004 at 08:17:36, Uri Blass wrote: >On November 11, 2004 at 08:11:03, Uri Blass wrote: > >>On November 11, 2004 at 07:44:01, Andrew Platt wrote: >> >>>On November 11, 2004 at 02:15:20, Derek Paquette wrote: >>> >>>>I play email chess all the time, aswell as blitz games on the net. I also play >>>>engine matches online and this came across. >>>> >>>>If someone were to play an email game, say a Grandmaster vs Me, and I was to use >>>>a computer, and the return move time was say 5 days a piece. If I were to keep >>>>Shredder 8 on Infinite analysis for those 5 days per move (say i keep the cpu >>>>very cool and i give it a few hours of break) >>>> >>>>would shredder 8 play a perfect game? or near perfect where the gm would have no >>>>chance without the assistance of another computer? >>>> >>>>I know that the longer the time control the better for the computer but to what >>>>end? >>>> >>>>with 5 days per move, that is 120 hours,(7200min) >>>>using the starting position as a bench mark for depth vs time, (where shredder 8 >>>>goes 1 more ply after it doubles its time searching) >>>> >>>>I calculate on my athlon 1700xp that after 5 days shredder 8 would reach >>>>.... >>>> >>>>depth 21 in 27 minutes...knowing that... >>>> >>>>depth 22 in 54 min >>>>depth 23 in 108 min >>>>depth 24 in 216 min >>>>depth 25 in 432 min >>>>depth 26 in 864 min >>>>depth 27 in 1728 min >>>>depth 28 in 3456 min >>>>depth 29 in 6912 min >>>> >>>>So basically shredder 8 would reach a ply of 29 in just under 5 days... >>>>could ANY human EVER beat it EVER? without computer assistance? >>> >>>Yes of course a human could beat it EVER. If it's a quiet position, the human >>>could use those 15 moves to significantly improve their position while Shredder >>>flounders around a bit. >> >>Shredder can also use the 15 moves to improve it's position. >> >>> >>>What would work much better, and what I do for post-game analysis of my games, >>>is to let Shredder think for a while and then move, let it think, move and see >>>what happens to the position. Or let it play against itself. I often do that, >>>then find improvements for Shredder, get it to try that out. >> >>Shredder could find a lot of these improvement if you give it more time and it >>can also find improvement that you did not find in that way. >> >>Uri > >I can add that 29 plies of shredder does not mean that it can see everything in >the next 14 or 15 moves of both sides. > >It is obvious that shredder does a lot of pruning to get that depth. > >Uri Yes it definately does pruning, but what is your thoughts on a human beating it at those time controls? 5 days per move. (no computer assistance for the human)
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