Final position — Black is winning
King's Pawn Opening: Wins a Pawn (Wenger–Cornell)
Black wins in 8 moves with a decisive material gain. (Wenger - Cornell, Internet 1995)
The moves
| 1. | e4 | b6 |
| 2. | d3 | Bb7 |
| 3. | Nc3 | c5 |
| 4. | Bf4 | Nc6 |
| 5. | Nf3 | d6 |
| 6. | d4 | Nxd4 |
| 7. | Nxd4 | cxd4 |
| 8. | Bb5+ |
How the King's Pawn Opening: Wins a Pawn (Wenger–Cornell) works
The King's Pawn Opening: Wins a Pawn (Wenger–Cornell) is a classic chess opening trap arising from the King's pawn opening. In this line Black wins decisive material by move 8, punishing a natural-looking but losing idea from White.
The full sequence runs 1.e4 b6 2.d3 Bb7 3.Nc3 c5 4.Bf4 Nc6 5.Nf3 d6 6.d4 Nxd4 7.Nxd4 cxd4 8.Bb5+. 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 (Wenger - Cornell, Internet 1995). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the King's Pawn Opening: Wins a Pawn (Wenger–Cornell) 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.