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 ...
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.