"Odd & Even" is a logical puzzle gamethatconsists of a frame of numbered square tiles in random order.Theobject of the game is to arrange the tiles in numerical orderbyexchanging adjoining tiles with numbers of different parity. Itisdesirable to do this with minimal number of moves. Theexchangingof tiles containing numbers of the same parity isdisabled. Thegame will be considered as passed up to the end afterarranging alltiles in row-major order in rows growing from left toright, androws from top to bottom.