How do you punish an opponent for not castling and moving the queen too many times in the opening?
How about saccing a pawn and a bishop to train 4 pieces on the defenseless king?
1. e2-e4 c7-c6 2. d2-d4 e7-e5 3. d4xe5 Qd8-a5 4. Nb1-c3 Qa5xe5 5. Ng1-f3 Qe5-c7 6. Bf1-c4 Bf8-b4 7. Bc1-d2 Bb4xc3 8. Bd2xc3 b7-b5 9. Bc4-b3 Ng8-f6 10. Nf3-e5 Rh8-f8 11. O-O Nf6xe4 12. Rf1-e1 Ne4xc3 13. Qd1-h5 g7-g6 14. Ne5xf7 1-0
(mate in 2)
Edit: I could have done it a move earlier, I know, but it was blitz and I didn't see it.