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H. G. Muller wrote on Wed, Jan 7, 2009 05:40 PM UTC:
lame D = D that cannot jump.

K+G vs K+R is a generally-won end-game on 8x8. I am pretty sure it is the same on 10x10, and that it does not matter much if Pawns are present. (Provided, of course, they are not very close to promotion).

The reason is that Ganesha can checkmate (forcing it, so not just help mates like Archbishop) without the aid of its King on any size board (or in fact on a quarter-infinite board). It might take some time before it gets close enough to the opponent King to give the first check, but once it does, you are toast...

And a Rook can not give perpetuals like a Queen can: when it tries you approach until you attack it diagonally, and then it has to move without checking, and the Ganesha gets one step closer to the opponent King. (Well, two steps, more likely! ;-) )