Brrrr (large) is one-fourth in the water, and not contacting a stone wall at all, although he is half in a sandstorm, which was not intended. I should have had Brrrr squeezing at 95N75E, which is what he will do his next turn. Brrrr should have taken damage from the storm this past round.
The stone wall goes from 80N80E to 80N95E (but not actually on the edge of the 80N95E square. To the north, it goes from 105N80E to 110N80E.
I will E-mail the arena to you.