Final position — Black is winning
Queen's Pawn Game: Opening Trap (Steckner–Csajka)
Black wins in 8 moves with a decisive material gain. (Steckner - Csajka, 2002.??.??)
The moves
| 1. | d4 | d5 |
| 2. | Nf3 | Nf6 |
| 3. | g3 | g6 |
| 4. | b3 | Bg7 |
| 5. | Bb2 | c5 |
| 6. | dxc5 | Qa5+ |
| 7. | Nbd2 | Qxc5 |
| 8. | c4 | Ng4 |
How the Queen's Pawn Game: Opening Trap (Steckner–Csajka) works
The Queen's Pawn Game: Opening Trap (Steckner–Csajka) is a classic chess opening trap arising from the Queen's pawn game. In this line Black wins decisive material by move 8, punishing a natural-looking but losing idea from White.
The full sequence runs 1.d4 d5 2.Nf3 Nf6 3.g3 g6 4.b3 Bg7 5.Bb2 c5 6.dxc5 Qa5+ 7.Nbd2 Qxc5 8.c4 Ng4. 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 (Steckner - Csajka, 2002.??.??). 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 Pawn Game: Opening Trap (Steckner–Csajka) 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.