This is another puzzle you can't do at GameKnot—can anyone tell I'm irritated with their puzzle system yet?—despite being an important element of chess. The object of this puzzle is not to checkmate the opponent, but to gain an advantage.
The reason this is important is illustrated by the fact that the position below is where the person playing white (then rated 1733) resigned the game. What he
shouldcould have done is taken what might have proved a game-winning advantage. Can you tell what
shouldcan be done?
Don't cheat!
1. Bg5+
2. Bxd8, capturing Black's queen
3. 0-0-0 is the best next move for White, bringing his rook on the d-file
I am so embarrassed.
It was the person who played Black here who was rated 1733 and was the one who resigned the game. But it's still a nice illustration in grabbing the advantage.