Annotated Chess Game 8817548 by talzamir

1. d4 d5 2. e4
Blackmar-Diemer Gambit
2... dxe4 3. Nb1c3 Ng8f6 4. f3 exf3 5. Qd1xf3
Offers the d-pawn. Ryder Gambit. More classic is Nxf3 for just one pawn offered.
5... Qd8xd4
Theory suggests refusing the d-pawn and doing c6 or something like that instead, with the white queen blocking natural development moves.
6. Bc1e3 Qd4b4
? Looks good on the surface, thinking white can't do O-O-O because of Bg4, but..
7. O-O-O
..but white can.
7... Bc8g4
? The move that triggers the trap.
8. Nc3b5
! Threatens checkmate and even vs perfect defense gives a decisive advantage.
8... Nb8a6 9. Qf3xb7 Qb4e4 10. Qb7xa6 Bg4xd1 11. Kc1xd1 Ra8d8 12. Be3d2 Nf6d5 13. Qa6c6 Rd8d7 14. Qc6a8 Rd7d8 15. Nb5xc7 Ke8d7 16. Bf1b5
Considered Qxd5+ Qxd5 Nxd5 here, but decided that the black king is exposed enough that it is possible to offer the knight.
16... Kd7xc7 17. Qa8xa7 Kc7d6 18. Qa7a6 Kd6e5
Kc7 Qa5+ Nb6 Qa7+ takes the knight with a check; Kc7 Qa5+ Kd6 takes the rook with a check.
19. Ng1f3
1-0 as Kf5 Bd3+ wins the queen.