Unexpected short win against chess challenge Clubhouse Games (Nintendo DS, Hard mode)

I don't do that well against computer opponents, but last week I had this surprising win (surprising to me at least) against the AI in Clubhouse Games for the Nintendo DS (in case you care about this: Stamp mode (Hard) Level 4-3). The CPU played white, so I played black. 01. d4. d5. 02. Qd3. Bd7. 03. Qb3. Qc8. 04. Qxd5. c6. 05. Qa5. b6. 06. Qe5. e6. 07. Qxb8. Qxb8. 08. Bd2. a5. 09. h4. h5. 10. Rh3. Nf6. 11. Bg5. Be7. 12. c3. Qd6. 13. Bc1. O-O-O. 14. e3. Nd5. 15. Ba6+. Kc7. 16. Ne2. Ra8. 17. Bc8. Kxc8. 18. e4. b5. 19. exd5. c6xd5. 20. Bd2. f6. 21. Kd1. e5. 22. dxe5. Qxd5. 23. Bf4. Qf5. 24. Re3. Bc5. 25. Re8+. Rxe8. 26. Nd2. Bxf2. 27. Ne4. Qxe4. 28. Bb8. Qxe2+. 29. Kc1. Bg4. 30. Kb1. Qd1++.