"Ed Gaillard" wrote:
The part that's missing is that the players weren't told what the
winning square was.

Now THAT'S interesting. I assume, however, that it had to be on the 3rd,
4th, 5th, or 6th rank. Or if not, that the player already occupying that
square would have to first vacate it, then re-occupy it.

This reminds me of Bomb Chess. At the start of the game, each player
secretly designates (in writing) one of his pieces or pawns as his Bomb. If
his opponent ever captures it, he loses immediately.

To prevent premature finishes, it is necessary to prohibit naming the queen
as the Bomb. And, of course, naming the king as the Bomb would not be legal
either.

Bill Smythe