Final position — White is winning
Ruy Lopez: Black Queen Trap (Glass–Bauer)
White wins in 14 moves with a decisive material gain. (Glass - Bauer, Switzerland 1977)
The moves
| 1. | e4 | e5 |
| 2. | Nf3 | Nc6 |
| 3. | Bb5 | a6 |
| 4. | Bxc6 | dxc6 |
| 5. | O-O | f6 |
| 6. | d4 | exd4 |
| 7. | Nxd4 | c5 |
| 8. | Nb3 | Qxd1 |
| 9. | Rxd1 | Bd7 |
| 10. | Bf4 | O-O-O |
| 11. | Nc3 | c6 |
| 12. | Na4 | b5 |
| 13. | Nb6+ | Kb7 |
| 14. | Nxd7 |
How the Ruy Lopez: Black Queen Trap (Glass–Bauer) works
The Ruy Lopez: Black Queen Trap (Glass–Bauer) is a classic chess opening trap arising from the Ruy Lopez. In this line White wins decisive material by move 14, punishing a natural-looking but losing idea from Black.
The full sequence runs 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6 6.d4 exd4 7.Nxd4 c5 8.Nb3 Qxd1 9.Rxd1 Bd7 10.Bf4 O-O-O 11.Nc3 c6 12.Na4 b5 13.Nb6+ Kb7 14.Nxd7. 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 (Glass - Bauer, Switzerland 1977). Recognising it early lets you either spring it as White or sidestep it as Black.
Practice this trap move-by-move
Open the Ruy Lopez: Black Queen Trap (Glass–Bauer) 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.