Frontenac Gambit

The gambit has an explosive opening and sacrifices a knight to trap the Queen.

1. e4, e6
2. d4, d5
3. Nc3, c5
4. exd5, exd5
5. Bb5+, Nc6
6. Nf3, Nf6
7. Ne5, Qc7
8. Bg5, Ne4
9. Nxd5, Qd6
10. Bh4, Qxd5

Black thinks he gained a piece.  White's next move surprised him.

11. Bc4, Qxd4
12. Bxf7 mate