Final position — Black is winning
Queen's Indian Defence: Bxg2 Sacrifice
Black wins in 13 moves with a decisive material gain. (Nurnberg - Rodl, Riedenburg 1947)
The moves
| 1. | d4 | Nf6 |
| 2. | c4 | e6 |
| 3. | Nf3 | b6 |
| 4. | a3 | Bb7 |
| 5. | Nc3 | Ne4 |
| 6. | Qc2 | Nxc3 |
| 7. | Qxc3 | Be7 |
| 8. | Bf4 | Bf6 |
| 9. | Qd2 | d6 |
| 10. | e3 | Nd7 |
| 11. | Be2 | g5 |
| 12. | Bg3 | g4 |
| 13. | Ng1 | Bxg2 |
How the Queen's Indian Defence: Bxg2 Sacrifice works
The Queen's Indian Defence: Bxg2 Sacrifice is a classic chess opening trap arising from the Queen's Indian defence. In this line Black wins decisive material by move 13, punishing a natural-looking but losing idea from White.
The full sequence runs 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 Ne4 6.Qc2 Nxc3 7.Qxc3 Be7 8.Bf4 Bf6 9.Qd2 d6 10.e3 Nd7 11.Be2 g5 12.Bg3 g4 13.Ng1 Bxg2. Each move looks reasonable, which is exactly why the trap is so effective over the board — White walks into it while trying to play "normal" developing moves.
This pattern is well known from master and correspondence play (Nurnberg - Rodl, Riedenburg 1947). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Queen's Indian Defence: Bxg2 Sacrifice 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.