Final position — Black is winning
Dutch: Wins a Pawn (Vaiser–Mutzner)
Black wins in 8 moves with a decisive material gain. (Vaiser - Mutzner, Mendrisio 1988)
The moves
| 1. | d4 | f5 |
| 2. | Nc3 | Nf6 |
| 3. | Bg5 | d5 |
| 4. | Bxf6 | exf6 |
| 5. | e3 | c6 |
| 6. | Bd3 | Qb6 |
| 7. | a3 | Qxb2 |
| 8. | Na4 |
How the Dutch: Wins a Pawn (Vaiser–Mutzner) works
The Dutch: Wins a Pawn (Vaiser–Mutzner) is a classic chess opening trap arising from the Dutch. 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 f5 2.Nc3 Nf6 3.Bg5 d5 4.Bxf6 exf6 5.e3 c6 6.Bd3 Qb6 7.a3 Qxb2 8.Na4. 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 (Vaiser - Mutzner, Mendrisio 1988). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Dutch: Wins a Pawn (Vaiser–Mutzner) 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.