I was studying a lot of 4x4 endgames on fairygen by multiplying all the chess piece movements by 2, (Kings become Alibabas, Knights become 2,4-leapers, Bishops become alfilriders etc.) and was wondering if anyone knew how to generate tablebases for larger chessboards. It would make sense to try to generate tablebases for the largest chessboard possible, since smaller boards can be studied simply by multiplying the piece movements by a certain number (you could also generate 3x3 endgames by multiplying piece movements by 3), but since not all board sizes can be generated using this method, there must be a "friendly" set of board sizes with the most potential to study smaller boards on it.

I made a playlist of a specific 2-leaper mating pattern on 8x8 boards

http://www.youtube.com/watch?v=hx0UtD6o ... re=mh_lolz

It would be interesting to learn the board sizes where each set of leapers lose their mating potential, or if there are algorithms to know what range of boards mate is possible on, since checkmate for a certain endgame may be possible on a 1000000 by X sized chessboard (where X is small number), but not on an X+1 by X+1 sized chessboard, where the extra line of freedom is all the defender's king needs to hold a draw.