82 ( +1 | -1 ) Certainly not the best move......but it's not a definitively losing one, either. After 36. ...c3, the best continuation is probably 37. Bxf7 cxd2 38. Bh5--note that, since the pawn has switched to the d-file, your remaining bishop now covers the queening square, while his does not. This is still not an enviable endgame--your opponent will be able to force a passed pawn on the queenside while you're tied up guarding the threat on d2, but you never know.
Note also that your opponent's followup to your bishop move, 36. ...Bg6, lets you off the hook for the moment, as 37. e4 allows you to set up a little stronghold in the center and block his bishop threat. His correct move would have been 36. ...Bxd5, after which the two black bishops will be able to guide the c-pawn to promotion. Play might go something like: 38. Rf2 Bg7 39. h4 Be4 40. hxg5 c2 41. Rf1 Bb2 and black queens.
29 ( +1 | -1 ) I mostly agree with bucklehead, butI would suggest that, on GPs 38. Bb3 might be slightly better as White's King is going to need to approach the passed pawn via e2 and he may want the bishop on the queen side at that point. Either way the draw should not be to difficult. White is the one sledding uphill, so no win after 36. Bd5.