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Subject: Re: Crafty Book Create 60

Author: Robert Hyatt

Date: 12:04:58 08/30/99

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On August 30, 1999 at 10:48:18, Chris Carson wrote:

>OK, Here is my crafty.rc file:
>
>log on
>learn 000
>hash=6M
>hashp=2M
>computer
>book on
>book random 1
>book width 3
>exit
>
>When I use Crafty 16.x with Winboard 4.03
>with the book.bin/books.bin that Bob built everything
>is fine.  Crafty uses the book moves.  I was
>trying to build Small.txt (renamed to small.pgn).
>
>When I use the small book that I built, Crafty leaves
>book quickly (1.e4, 1.e5, 2.nf3, out of book).

small is _far_ too narrow with hardly any duplicates.  It was the text
we used way back in the early Cray Blitz days, and has almost all of MCO10
hand-typed, plus some MCO11 and other stuff as well.  But there are not
many duplicate moves, which means they all look very suspicious to crafty.
I probably ought to can 'small' as it is really the wrong king of book
file to use with the current code, which depends on frequency analysis to
select lines...




>
>Here is the log from my book create:
>
>book learning disabled
>result learning disabled
>position learning disabled
>hash table memory = 6M bytes.
>pawn hash table memory = 2M bytes.
>playing a computer!
>book file enabled.
>choose from book moves randomly (using weights.)
>choose from 3 best moves.
>
>
>Crafty v16.6
>
>White(1): book create small.pgn 60
>ERROR!  move 7: be7 is illegal (line 1634)
>ERROR!  move 7: be7 is illegal (line 1637)
>ERROR!  move 6: bd7 is illegal (line 1640)
>ERROR!  move 4: bd7 is illegal (line 1643)
>ERROR!  move 7: bc6 is illegal (line 1646)
>ERROR!  move 6: be7 is illegal (line 1649)
>ERROR!  move 6: be7 is illegal (line 1652)
>ERROR!  move 3: bg5 is illegal (line 1655)
>ERROR!  move 3: bg5 is illegal (line 1659)
>ERROR!  move 3: bg5 is illegal (line 1663)
>ERROR!  move 3: bg5 is illegal (line 1667)
>ERROR!  move 3: bg5 is illegal (line 1671)
>ERROR!  move 3: bg5 is illegal (line 1674)
>ERROR!  move 3: bg5 is illegal (line 1678)
>
>
>parsed 137608 moves (4658 games).
>found 14 errors during parsing.
>discarded 0 moves (maxply=60).
>discarded 0 moves (minplayed=0).
>discarded 0 moves (win/lose=0.0%).
>book contains 52012 unique positions.
>deepest book line was 60 plies.
>longest cluster of moves was 17.
>time used:   23.97 cpu     23.97 elapsed.
>White(1): books create start.pgn 60
>
>
>parsed 135 moves (34 games).
>found 0 errors during parsing.
>discarded 0 moves (maxply=60).
>discarded 0 moves (minplayed=0).
>discarded 0 moves (win/lose=0.0%).
>book contains 71 unique positions.
>deepest book line was 8 plies.
>longest cluster of moves was 9.
>time used:    0.10 cpu      0.10 elapsed.
>White(1): quit
>execution complete.
>
>Any suggestions.  Guess it has been a while since
>I built a Crafty Book.  :)
>
>Best Regards,
>Chris Carson



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