Caro-Kann 1 e4 c6 2 d4 d5 3 e5 Bf5 4 Bg5

What's "wrong" with this move (4 Bg5) in the Caro-Kann Advance Variation? It does not appear at all in the 1900+ or Master game explorer, nor in a Google search. It appears only once in the RHP 1400+ explorer. But I don't see what's so wrong with it that no one would play it. Is it a mistake? If so, what's the refutation? It just occurred in this game: Game 4176986. Thanks.

After 1 e4 c6 2 d4 d5 3 e5 Bf5 4 Bg5 ...

Originally posted by HolyT
What's "wrong" with this move (4 Bg5) in the Caro-Kann Advance Variation? It does not appear at all in the 1900+ or Master game explorer, nor in a Google search. It appears only once in the RHP 1400+ explorer. But I don't see what's so wrong with it that no one would play it. Is it a mistake? If so, what's the refutation? It just occurred in this game: [ ...[text shortened]... 3pPbB1/3P4/8/PPP2PPP/RN1QKBNR b KQkq - 2 4[/fen]
After 1 e4 c6 2 d4 d5 3 e5 Bf5 4 Bg5 ...

h6 Bh4
Qc7!

and black's position is superior, e6 comes next move, and the black bishop has zero use what soever.
It is kind of like playing a3 on move one.
it has no weaknesses, it's just a waste of a move, which is usually deemed incorrect.

Originally posted by HolyT
What's "wrong" with this move (4 Bg5) in the Caro-Kann Advance Variation? It does not appear at all in the 1900+ or Master game explorer, nor in a Google search. It appears only once in the RHP 1400+ explorer. But I don't see what's so wrong with it that no one would play it. Is it a mistake? If so, what's the refutation? It just occurred in this game: [ ...[text shortened]... 3pPbB1/3P4/8/PPP2PPP/RN1QKBNR b KQkq - 2 4[/fen]
After 1 e4 c6 2 d4 d5 3 e5 Bf5 4 Bg5 ...

Caro-Kann Advance often has white advancing his kingside pawns, that bishop would sort of be in the way there wouldn't it?

After 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be3, white can meet 4... Qb6 with 5. Qc1 or 5. Nd2.

After 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bg5?, white can't respond well to 4... Qb6 because d4 isn't well protected. So he'd have to play 5. b3 which is ugly.

Originally posted by rubberjaw30
h6 Bh4
Qc7!

and black's position is superior, e6 comes next move, and the black bishop has zero use what soever.
It is kind of like playing a3 on move one.
it has no weaknesses, it's just a waste of a move, which is usually deemed incorrect.

you missed Qb6.


EDIT: oops! zzyw beat me to it.