Final position — White is winning
English Opening: Knight Fork
White wins in 9 moves with a decisive material gain. (Petek - Ptacnikova, Czechoslovakia 1995)
The moves
| 1. | c4 | e5 |
| 2. | Nc3 | Nc6 |
| 3. | Nf3 | g6 |
| 4. | d4 | exd4 |
| 5. | Nd5 | h6 |
| 6. | Nxd4 | Bg7 |
| 7. | Bf4 | d6 |
| 8. | Nb5 | Bxb2 |
| 9. | Nbxc7+ |
How the English Opening: Knight Fork works
The English Opening: Knight Fork is a classic chess opening trap arising from the English Opening. In this line White wins decisive material by move 9, punishing a natural-looking but losing idea from Black.
The full sequence runs 1.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.d4 exd4 5.Nd5 h6 6.Nxd4 Bg7 7.Bf4 d6 8.Nb5 Bxb2 9.Nbxc7+. Each move looks reasonable, which is exactly why the trap is so effective over the board — Black walks into it while trying to play "normal" developing moves.
This pattern is well known from master and correspondence play (Petek - Ptacnikova, Czechoslovakia 1995). Recognising it early lets you either spring it as White or sidestep it as Black.
Practice this trap move-by-move
Open the English Opening: Knight Fork 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.