My first smothered mate

[Event "Clan challenge"] [Site "http://www.redhotpawn.com"] [Date "2014.01.16"] [EndDate "2014.03.19"] [Round "?"] [White "rigidwithfear"] [Black "64squaresofpain"] [WhiteRating "1375"] [BlackRating "1623"] [WhiteElo "1375"] [BlackElo "1623"] [Result "0-1"] [GameId "10427340"] 1. e4 c5 2. d4 cxd4 3. c3 {Smith-Morra Gambit... I'm not a fan of this for White} 3... dxc3 4. Nb1xc3 e6 5. e5 Bf8b4 6. Bf1e2 Nb8c6 7. Ng1f3 f6 {Shifts that pesky pawn on e5, but perhaps weakening the King} 8. exf6 Ng8xf6 9. O-O O-O 10. Bc1e3 {I think g5 is a better square for this bishop} 10... d5 11. Be3d2 {Again, what's wrong with g5?} 11... d4 12. Nc3b1 d3 {After causing 2 pieces to retreat, this d-pawn now traps the light sq. bishop} 13. Bd2xb4 dxe2 14. Qd1xe2 Nc6xb4 15. Nb1c3 Rf8e8 16. Rf1d1 Qd8a5 17. a3 Nb4d5 18. b4 {Black simply has NxN here, as the Queen is hanging} 18... Nd5xc3 19. Qe2c4 {But this move seems to win the piece back} 19... Qa5b6 20. Qc4xc3 Nf6e4 21. Qc3e5 {? no good, as f2 hangs} 21... Ne4xf2 22. Rd1d6 {? Also no good, as} 22... Nf2h3 {Thanks to seeing some games posted by the likes of GP, and seeing some videos on youtube, I saw the smothered mate sequence here} 23. Kg1h1 Qb6g1 {Whether the Queen is taken with the Rook or Knight, black has mate with Nf2... white resigned} 0-1