Final position — White is winning
Queen's Indian Defence: Black Queen Trap
White wins in 18 moves with a decisive material gain. (Berlin - Aspengren, 1928.??.??)
The moves
| 1. | d4 | Nf6 |
| 2. | c4 | e6 |
| 3. | Nf3 | b6 |
| 4. | Nc3 | Bb7 |
| 5. | g3 | d5 |
| 6. | cxd5 | exd5 |
| 7. | Bg2 | c5 |
| 8. | O-O | cxd4 |
| 9. | Nxd4 | Be7 |
| 10. | Nf5 | O-O |
| 11. | Nxd5 | Nxd5 |
| 12. | Bxd5 | Qd7 |
| 13. | Bxb7 | Qxb7 |
| 14. | Qd5 | Qc7 |
| 15. | Qxa8 | Nc6 |
| 16. | Qxc6 | Qxc6 |
| 17. | Nxe7+ | Kh8 |
| 18. | Nxc6 |
How the Queen's Indian Defence: Black Queen Trap works
The Queen's Indian Defence: Black Queen Trap is a classic chess opening trap arising from the Queen's Indian defence. In this line White wins decisive material by move 18, punishing a natural-looking but losing idea from Black.
The full sequence runs 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.g3 d5 6.cxd5 exd5 7.Bg2 c5 8.O-O cxd4 9.Nxd4 Be7 10.Nf5 O-O 11.Nxd5 Nxd5 12.Bxd5 Qd7 13.Bxb7 Qxb7 14.Qd5 Qc7 15.Qxa8 Nc6 16.Qxc6 Qxc6 17.Nxe7+ Kh8 18.Nxc6. Each move looks reasonable, which is exactly why the trap is so effective over the board — Black walks into it while trying to play "normal" developing moves.
This pattern is well known from master and correspondence play (Berlin - Aspengren, 1928.??.??). Recognising it early lets you either spring it as White or sidestep it as Black.
Practice this trap move-by-move
Open the Queen's Indian Defence: Black Queen Trap in the Trapsterapp to play it out on a live board, drill it in practice mode, and learn how to avoid it when it's set for you — along with the full library of chess traps and gambits, fully offline.