Author: Dann Corbit
Date: 11:34:26 01/15/01
Go up one level in this thread
On January 15, 2001 at 07:47:13, José Carlos wrote:
>On January 13, 2001 at 16:39:31, Dann Corbit wrote:
>
>>On January 13, 2001 at 14:52:08, Leen Ammeraal wrote:
>>
>>>On January 13, 2001 at 14:35:49, Pete Galati wrote:
>>>
>>>>On January 13, 2001 at 13:46:15, Leen Ammeraal wrote:
>>>>
>>>>>I just uploaded a (rather restricted) WinBoard version,
>>>>>wbqueen, of my chess program queen. Any reactions
>>>>>are welcome. Being unfamiliar with ELO rating I would
>>>>>appreciate any opinions (or better) about the rating
>>>>>of this program, as well as suggestions how to improve it.
>>>>>I programmed it in VC++6.0 and I used
>>>>>
>>>>>- rotated bitboards
>>>>>- PVS/Negascout
>>>>>- hashing
>>>>>- nullmove pruning
>>>>>- openings from the PGN files of about 350 FIDE games
>>>>>
>>>>>Leen Ammeraal
>>>>>http://home.wxs.nl/~ammeraal/
>>>>
>>>>It always surprizes me when someone builds the opening book inot their exe. It
>>>>seems to be working just fine, I didn't take the time to add it to the WBini
>>>>file yet, but it's working without any problems so far.
>>>>
>>>>When you say "rather restricted", do you mean it doesn't use many Winboard
>>>>commands and options yet?
>>>>
>>>>Pete
>>>
>>>Yes, that is what I mean. As for the opening book, it may interest
>>>you to see a code fragment related to it:
>>>
>>>char *pOpenings[] =
>>>{"e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d3 a6 Nbd2 O-O Bb3 d6 h3 Be6 Nf1 h6 g4 Nh7 Rg1 d5
>>>Qe2 Be7 ",
>>>"d4 Nf6 Nf3 g6 c4 Bg7 g3 d6 Bg2 O-O O-O Nc6 Nc3 a6 d5 Na5 Nd2 c5 Rb1 Rb8 b3 b5
>>>Bb2 Bf5 ",
>>>"Nf3 Nf6 d4 e6 c3 c5 Bg5 cxd4 cxd4 Qb6 Qc2 Nc6 Bxf6 gxf6 e3 d5 Nc3 Bd7 Be2 Rc8
>>>O-O f5 Rfc1 Nb8 ",
>>>"g3 d5 Bg2 g6 c4 c6 cxd5 cxd5 Qb3 Nf6 Nc3 e6 Nf3 Nc6 d4 Bg7 O-O O-O Bf4 Nh5 Rfd1
>>>Nxf4 gxf4 b6 ",
>>>
>>>These are the first four of the 350 games I used. I downloaded
>>>some file with these games from the Internet, and made them
>>>somewhat shorter by deleting the move numbers and tags (using a simple
>>>conversion program, which generated the above code). All positions
>>>that occur with these moves, along with the next move, are stored
>>>in my hashtable, using a modular counter that start at a random
>>>position in this array pOpenings (to avoid getting the same
>>>game each time), and that is the opening book! If you think
>>>there is a better set of games for this purpose, please let me know.
>>
>>The Winboard Forum is a good source of information for this sort of thing also:
>>http://f11.parsimony.net/forum16635/
>>
>>Mogens Larsen seems to have a knack for building good books. The very best
>>books are made by the professionals. I suspect that Vincent has a really good
>>book because he puts a lot of effort into it. Jeroen N. is a professional book
>>builder (If I recall correctly).
>>
>>There is a PGN file on my ftp site that contains exclusively players with an ELO
>>rating of 2600 or more on both sides of the board. These games are obviously of
>>very high quality.
>>ftp://cap.connx.com/pub/2600.ZIP
>
> Hi Dann, I tried your pgn some time ago and I find it really interesting. The
>games it contains are not perfect, and there're still several blunders by the
>involved GM's there, but it's a good starting point for building an own book.
> I've deleted some games from it, included '!' and '?' marks here and then, and
>pasted some analisys for building a new book for my program. Right now, I'm
>testing it...
> But, just an advice, don't build a book from that pgn without some checking,
>or the program will lose some stupid games...
>
> Anyway, thanks for the file.
>
> José C.
If you can provide the updated information, that may prove very helpful. Are
you using NCO to correct it or ???
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