George Duke wrote on Fri, Sep 19, 2014 04:37 PM UTC:
Some CVs have drops to specific cells, such as Seirawan,
http://www.seirawanchess.com/, Another example of that is great Altair, http://www.chessvariants.org/dpieces.dir/altair.html. There piece goes to specific rank. Lavieri accepted my calling the mechanism "drop" though in Altair the piece is not in a pocket, but already on board in a rank three away from the destination rank. Jacks and Witches is another one of those, http://www.chessvariants.org/large.dir/contest84/jacksandwitches84.html,
where the off-board Jack is dropped as a move to one of four squares.
Set-up phases of placement CVs have their own rules for what are legitimate drops at the beginning: Vhttp://www.chessvariants.org/large.dir/bbchess/bbchess.html.
Very specialized: http://www.chessvariants.org/xiangqivariants.dir/para-xiangqi.html, because a dropped piece can go only orthogonal to guide piece (used before).
( I think all these drops limited to area are better concept than long-time Shogi free drops with minor restrictions, at least for westerners. Shogi is #1 played at GC, but same time why many players hate and won't play Shogi variants is that the pretty free drop ruins every well-thought position. )