Andreas suggestion makes sense, it is ideal you can play the game, and it
is supposed that an 8x8 chess board and a chess set is easely available.
The problem is, perhaps, that there is not too much space to explore
looking for great impact, we (and others) have almost exhausted the best
ideas. But there is always space to go into. In every case, I think it can
be nice a new type of contest, apart from the usual: 'design a Chess
variant in N squares'.