Final position — Black is winning
Vienna Game: Wins a Piece
Black wins in 7 moves with a decisive material gain. (Megatron - Wall, Internet 1996)
The moves
| 1. | e4 | e5 |
| 2. | Nc3 | Nc6 |
| 3. | Bb5 | Nd4 |
| 4. | Nf3 | Nf6 |
| 5. | d3 | Bb4 |
| 6. | O-O | Bxc3 |
| 7. | bxc3 | Nxb5 |
How the Vienna Game: Wins a Piece works
The Vienna Game: Wins a Piece is a classic chess opening trap arising from the Vienna Game. In this line Black wins decisive material by move 7, punishing a natural-looking but losing idea from White.
The full sequence runs 1.e4 e5 2.Nc3 Nc6 3.Bb5 Nd4 4.Nf3 Nf6 5.d3 Bb4 6.O-O Bxc3 7.bxc3 Nxb5. 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 (Megatron - Wall, Internet 1996). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Vienna Game: Wins a Piece 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.