John Smith wrote on Sun, Sep 6, 2009 08:00 PM UTC:
I bring to you the Bodhisattva Pawn. Normally Pawns will promote as soon as
possible. However, the Bodhisattva Pawn may instead wait on the last rank,
allowing any Pawn to either move to his starting square or move any amount
of squares along the path he took to promotion before being obstructed if
either on that path or his starting square.