Caro Kann Exchange help - Nc3

Morning!

Had a quick question about the exchange version of the Caro Kann where generally white moves Bd3 and sets up.. but ive been running into Nc3 quite a bit recently (Im a low level player) and cant seem to find good setups against it when I do research. Anyone have any advice? Is it just Bishops out as usual? Thanks in advance

What do you normally play against 4.Nc3?

4.Bd3 is the only critical move. After 4.Nc3 you don't have major problems and can just calmly develop.

4.Bd3 is not the only critical move.

Last time I looked, 4.c4 is pretty critical too!

thank you for beating me to this 

Oh I completely forgot about Panov

after 4 nc3 nc6, this is white's dilemma. nf3 is met by bg4, if bf4 then bf5 and e6 and now nb5 can be answered with rc8, bg5 has no point if there is no nf6 yet, be2 is lame and you can just play bf5, waiting with h3 is also lame and bf5 or even g6 is possible, bd3 loses a pawn, so really bb5 is the only independent sensible idea here. you have to be careful about white's idea nf3-e5 especially if you want to play the bishop out before playing e6. however, even shutting the bishop in is playable since white has already displaced his knight and his bishop on b5 will lose time anyway after a6 or something. the main plan for black after completing development of the kingside is to try to push pawns on the queenside. if you can get the bishop out to f5 then great, but that is not necessary for this plan to work.