NAME

       fathom - Command-line for probing Syzygy tablebases

SYNOPSIS

       fathom [--help] [--path=PATH] [--test] FEN

   WHERE:
       FEN    The position (as a FEN string) to be probed.

       --help Print this helpful message.

       --path=PATH
              Set the tablebase PATH string.

       --test Print the result only. Useful for scripts.

DESCRIPTION:

       This program is a stand-alone Syzygy tablebase probe tool.
       The  program  takes  as  input  a  FEN  string  representation  of  a  chess  position  and outputs a PGN
       representation of the probe result.

       In addition to the standard fields, the output PGN represents the following information:
       - Result: "1-0" (white wins), "1/2-1/2" (draw), or "0-1" (black wins)
       - The Win-Draw-Loss (WDL) value for the next move: "Win", "Draw",
         "Loss", "CursedWin" (win but 50-move draw) or "BlessedLoss"
         (loss but 50-move draw)
       - The Distance-To-Zero (DTZ) value (in plys) for the next move
       - WinningMoves: The list of all winning moves
       - DrawingMoves: The list of all drawing moves
       - LosingMoves: The list of all losing moves

       The PGN contains a pseudo "principle variation" of Syzygy vs. Syzygy for the input position. Each PV move
       is rational with respect to preserving the WDL value. The PV does not represent the shortest mate nor the
       most natural human moves.

AUTHOR

       Fathom was written by basil  <basil@reqrypt.org>.   This  manual  page  was  written  by  Jose  G.  López
       <josgalo@gmail.com>  for the Debian GNU/Linux project, but may be used by others. It was written with the
       assistance of help2man(1) and then edited slightly to clean it up.