Final position — Black is winning
Old Indian Defence: White Queen Trap (Sonntag–Auer) #2
Black wins in 10 moves with a decisive material gain. (Sonntag - Auer, Porz 1990)
The moves
| 1. | d4 | Nf6 |
| 2. | c4 | d6 |
| 3. | Nc3 | e5 |
| 4. | e4 | exd4 |
| 5. | Qxd4 | g6 |
| 6. | Bg5 | Bg7 |
| 7. | e5 | dxe5 |
| 8. | Qxd8+ | Kxd8 |
| 9. | Nd5 | Nd7 |
| 10. | Rd1 |
How the Old Indian Defence: White Queen Trap (Sonntag–Auer) #2 works
The Old Indian Defence: White Queen Trap (Sonntag–Auer) #2 is a classic chess opening trap arising from the Old Indian Defence. In this line Black wins decisive material by move 10, punishing a natural-looking but losing idea from White.
The full sequence runs 1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.e4 exd4 5.Qxd4 g6 6.Bg5 Bg7 7.e5 dxe5 8.Qxd8+ Kxd8 9.Nd5 Nd7 10.Rd1. 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 (Sonntag - Auer, Porz 1990). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Old Indian Defence: White Queen Trap (Sonntag–Auer) #2 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.