Final position — Black is winning
Wins a Pawn (van der Heiden–van Wonrooy)
Black wins in 6 moves with a decisive material gain. (van der Heiden - van Wonrooy, 1978.??.??)
The moves
| 1. | g4 | d5 |
| 2. | Bg2 | Bxg4 |
| 3. | c4 | e6 |
| 4. | Qb3 | c6 |
| 5. | cxd5 | cxd5 |
| 6. | Qa4+ |
How the Wins a Pawn (van der Heiden–van Wonrooy) works
The Wins a Pawn (van der Heiden–van Wonrooy) is a classic chess opening trap. In this line Black wins decisive material by move 6, punishing a natural-looking but losing idea from White.
The full sequence runs 1.g4 d5 2.Bg2 Bxg4 3.c4 e6 4.Qb3 c6 5.cxd5 cxd5 6.Qa4+. 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 (van der Heiden - van Wonrooy, 1978.??.??). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Wins a Pawn (van der Heiden–van Wonrooy) 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.