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Subject: Fidelity's Chess Challenger 10

Author: William Kerr

Date: 09:54:01 01/20/99


In Feb 1979 I wrote a letter to Fidelity Electronics asking for information
on Chess Challenger 10. Here is a synoposis of what they wrote back with:

The processor was a Z80A (probability running a 4 Mhz.)

The software could analyze 35 chess positions per second.

The following table shows how many moves it searched at each level

where X = all moves

 level     depth (plys)                          TIME

           1     2     3     4     5     6

   1       X                                     5 Seconds
   2       20    X                               15 Seconds
   3       16    24    X                         35 Seconds
   4       20    8     4                         1.5 Minutes
   5       20    8     4     2                   2.5 Minutes
   6       X     X     X     X                   1 Hour
   7       X     X     X     X     24    X       24 Hours
   8       20    24    4     4     X             11 Minutes
   9       20    12    4     4     X             6 Minutes
  10       16    24    4     X                   3 Minutes

For those of you that never owned any of the Chess Computers back in the
70's may find these postings pointless but for those that did, info
on old chess computers brings back memories. Though I suppose in 20 years
someone will be telling how strong CM6k, Fritz5.32, Craftyxx.x, Rebel10, ....
was and the hardware they were run on.




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