The Chess Variant Pages

This page is written by the game's inventor, David Jagger.

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carlos carlos wrote on 2005-06-28 UTC
'A player's move of a ship is prohibited if it immediately undoes the
effect of his opponent's last move (done with the same ship).'

let's say we have a rook each on a ship.  if my opponent moves that ship
a3-a8, does that mean i can make any legal move except for back to a3?  or
can i not move it at all?  i favor the first option i think.  what does
'undoes the effect' mean here?  thanks for your help, dtj or anyone

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