Author: Bertil Eklund
Date: 08:51:13 03/02/01
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On March 02, 2001 at 09:01:02, Fernando Villegas wrote: >Hi Bert: >Many many years ago, when animals talked and I had a CC7, I wrote a candid >letter to Fidelity asking some question about this machine. I do not know why >they answered with a detailed explanation of the levels of C7. Unfortunately, >although I keep even commercial brochures related with chess computers, i did >not keep this sheet, but I remember something about how the level operated. What >I can recall is this: >level 3, 30 seconds, "experienced" level, did three esxhaustive plies search. >level 4, postal, 20 minutes per move, did an exhaustive full width search for >four plies. >level 6, three minutes per move, did five plies, the first three full widht and >then massice prunning in fourth and fifth plies. >level 7, 6 minutes per move, three full width and the last with prunning. >Sorry I do not remember exactly how the prunning was done . >Just historical -and as such, of course, distorted- info for you... >Cheers >Fernando Hi! I still have the instructions for both CC7 and CC10! CC7: level3 average 1min 20sec level6 average 6min level7 average 3min CC10 level 10 average 3min level 8 average 11min level 6 average 1hour! Mate in two level! As you remember there was some selectivity in these higher levels as it sometimes couldn't find a mate in two on higher levels! I have also seen the selectivity described somewhere but I can't remember where. Bertil
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