[empty-theory]

I wrote that .lud-file. There are 3 known issues with it: (1) The identity of a player's king is only updated after their own turn, not after each player's turn. (2) It is not always possible to suicide a stack that has the proper reach, because it might overshoot the mark (my code requires it to land exactly 1 step outside the board). (3) Suicided pieces are not removed if the resulting state has no uniquely talles stack of the current player's color. All of these issues are fixed in a new .lud-file written by someone else. (I usually write my own, but this is the second time the same guy has come to my rescue.)