Originally posted by Dejection
My friend challenged me and we played the Giuoco Piano, a line we must have played a hundred times before. This time he played
1. e4 e5
2. Nf3 Nc6
3. Bc4 Bc5
4. c3 Nf6
5. d4 exd4
6. cxd4 Bb4+
7. Nc3 Nxe4
8. 0-0 Nxc3
9. bxc3 Bxc3
This was supposed to be good for white, but he played 10... d5 I had no idea how to respond so i played Qxc3 and lost because i was a pawn down. Anyone know how to respond to that?
I used to play this opening as white quite a bit before I switched to the Koltanowski variation.
Assuming this game is not in progress I would play Bxd5.
The queen and bishop are exerting pressure on f7 and if black ignores the threat by playing Bxa1 he gets into difficulties.
11. Bxd5 Bxa1
12. Bxf7+ Kf8
13. Bxa3+ Ne7
If black just castles then
11. Bxf7 anyway Rxf7
12. Ng5 black will probably protect the rook via Qe8 (a move to f8 would be met by Ba3) and at this point you can capture on c3 with a better position.
I generally played 10.Ba3 which was a fun move in this position.
Edit: I was talking to a guy who knows the black line quite well and he reckons d5 is an old move that is not considered good for black these days.