Originally posted by Korch
After 6...Qa5 7. Bxc6 bxc6 8. Qxd4 Ba6 white can play 8.Nbd2 with c4 and 0-0 with at least defendable position (upd. ~!TONY!~ managed to point out it first). Stronger seems to be 7....dxc3! with complications advantageous for Black.
Yep, that's the important finesse.
6. Bb5? Qa5! 7. Bxc6 dxc3! 8. Qxd5 cxb2+ 9. Qxa5 bxc1=Q+ 10. Ke2 Qxh1 11. Be4 e6 12. Qc3 Qxg2 -+
This was what I calculated on move 6, and this was what got played in the game. I also noticed 11...Qc1! (getting the queen out and threatening Qb2+), which appears to be stronger than 11....e6, but I can't remember why I rejected it at this particular moment.