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  1. #1
    Monster of the deep Kevin Bonham's Avatar
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    Syzygy (7 piece) tablebase site online

    Looking for a 6-piece tablebase site I found there is now a 7-piece one online.

    https://syzygy-tables.info/

    Instead of always giving an immediate distance to mate it gives "DTZ", which is distance to zero (shortest number of half-moves to reset the 50-move draw count). Sometimes it gives DTM as well.

    It also gives the longest wins and losses for material balance, including a "frustrated" category which I assume means frustrated by the 50 move count.

    For instance for KBNP vs KNP this position is a forced win but with best play by both sides in terms of the 50 move rule, white takes black's knight on the 100th half-move, meaning that black never gets to claim the draw.

    FEN Viewer

  2. #2
    Monster of the deep Kevin Bonham's Avatar
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    An example of the kind of things one can find:

    FEN Viewer


    White Black to move is a piece up down but because of poor king and passive piece position Black has a forced win with DTZ 25.
    Last edited by Kevin Bonham; 13-01-2020 at 12:35 PM.

  3. #3
    CC Grandmaster Desmond's Avatar
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    Quote Originally Posted by Kevin Bonham View Post
    An example of the kind of things one can find:

    FEN Viewer


    White to move is a piece up but because of poor king and passive piece position Black has a forced win with DTZ 25.
    Hmm is it black to move? White to move Bb6+ looks good enough
    So what's your excuse? To run like the devil's chasing you.

    See you in another life, brotha.

  4. #4
    Monster of the deep Kevin Bonham's Avatar
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    Quote Originally Posted by Desmond View Post
    Hmm is it black to move? White to move Bb6+ looks good enough
    Yes it's black to move (fixed).

  5. #5
    Monster of the deep Kevin Bonham's Avatar
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    An unnatural but startling position:

    FEN Viewer


    Black to move. Although white seems to be winning queen for rook with a draw by force, this is actually a win for black. How?

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