Rich Hutnik wrote on Tue, Mar 25, 2008 04:11 PM UTC:
Ahh, that explains it. I didn't read through to the end. It is worth checking out sometime. I wonder if someone could do a 2 player version also. Wait, IAGO Chess could accommodate that :-).
In regards to the Turks using gating, it does look at least like it is a drop. If it involves placing a piece in a space just vacated by another piece, that would be gating. Gating is a move connected to another piece, as I see it. Castling and pawn promotion would be varieties.