Yes, that would be easy to play with Icehouse, like Oshi:
http://www.boardgamegeek.com/boardgame/23935I like the idea of doing it with a white Knight (small) on Yellow 'mids and a black Knight on blue. It also looks like there's a "side hole" between the fourth and fifth ranks, which I'd bet is the goal spot for the knights.
But here's the rub: Assuming someone gets the full rules to it (and Oshi, for that matter), is it ethical to reproduce them for use with Icehouse 'mids and a chessboard? (Assuming the rules aren't released with a CC License or into public domain.) It's one thing to translate ancient games like Snakes and Ladders or make variations on games like Chess--they've been public domain for centuries. It's another thing to impact a custom game maker's sales by circumventing the need for their product, even if Icehouse Game System provides both the three scales and the stackability necessary to play (hmmm... makes one wonder if it wasn't developed or playtested using Icehouse 'mids, come to think of it...). Thoughts?