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  1. 06 Mar '08 07:31
    I got the reminder again today telling me it is illegal to use chess engine during a game.

    Is it legal to use a chess opening explorer at the beginning of a game like

    I do not want to do anything illegal
  2. Standard member John of Reading
    Scotch addict
    06 Mar '08 08:14
    From the Terms of Service:

    (b) While a game is in progress you may not refer to chess engines, chess computers or be assisted by a third party. Endgame tablebases may not be consulted during play but you may reference books, databases consisting of previously played games between human players, and other pre-existing research materials.

    So the short answer is yes; and I use both and

    But there's a catch: contains a very small percentage of games played by computers. The percentage is so small that only once have I stumbled across one. I continue to use this database, however, since I believe the percentage to be so small that the database as a whole ought to be acceptable.

    I would welcome an authoratitive ruling on this.

    Failing that, if is not acceptable then can anyone recommend an openings database that is guaranteed to be 100% human?
  3. Standard member mrmist
    06 Mar '08 18:36
    So we can use the opening databases during play then? The excerpt from the rules presented during login did not include the part of the phrase about referencing pre-existing material, I don't think, or I didn't read it properly. But it is still in the terms.

    I frequently consult the opening books because it helps me not to stuff up the games until much later.

  4. 06 Mar '08 21:16
    We have our very own -
  5. Standard member John of Reading
    Scotch addict
    06 Mar '08 22:00
    Unfortunately the index behind the games explorer is still a case-insensitive index by FEN. That is, it doesn't know the difference between a white pawn and a black pawn.

    This is explained on page 7 of the Games Explorer thread Thread 57414. As a quick demonstration try the "cxd4" link here:

    This kind of thing is surely going to make the percentage statistics unreliable as soon as any pawns reach the fifth rank. The same bug affects and caused me a lot of grief when I was using that site in 2005/2006.

    But once that's been fixed it will be a strong contender.