Snapback!

Just an aside: I have intermittently tried to get better at Go, but the computer has until recently been smacking me around (pathetic, if you know anything about the state of Go programming). But aha! Now I am at the point where I am beginning to see...in the above diagram, as white I played 1. ... B1! 2. A1 (knocking out my two stones) ...C1! 3. B1 (again knocking out my C1 stone) ...C1 and I capture all of black's stones in the corner, as they run out of liberties.