Leaping Bat seems to play with a fairly standard set of fairy pieces. Is there anything in particular about this game that makes you estimate the amount of moves it could take to play as you have?
Or are you saying, that any game played on a 16x12 board, with a similar set-up to Leaping Bat, (full row of pawns and two full rows of pieces playing at either ends of the board with at least the same amount of one square movers and similar piece strength/variety) would take this long?