Final position — White is winning
Sicilian Defence: Knight Fork (Ekenberg–Alfredsson)
White wins in 9 moves with a decisive material gain. (Ekenberg - Alfredsson, Malmo 1966)
The moves
| 1. | e4 | c5 |
| 2. | f4 | e5 |
| 3. | Nf3 | d5 |
| 4. | Nxe5 | dxe4 |
| 5. | Bc4 | Nh6 |
| 6. | Qe2 | Bd6 |
| 7. | Bb5+ | Kf8 |
| 8. | Qxe4 | Qc7 |
| 9. | Ng6+ |
How the Sicilian Defence: Knight Fork (Ekenberg–Alfredsson) works
The Sicilian Defence: Knight Fork (Ekenberg–Alfredsson) is a classic chess opening trap arising from the Sicilian Defence. In this line White wins decisive material by move 9, punishing a natural-looking but losing idea from Black.
The full sequence runs 1.e4 c5 2.f4 e5 3.Nf3 d5 4.Nxe5 dxe4 5.Bc4 Nh6 6.Qe2 Bd6 7.Bb5+ Kf8 8.Qxe4 Qc7 9.Ng6+. 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 (Ekenberg - Alfredsson, Malmo 1966). Recognising it early lets you either spring it as White or sidestep it as Black.
Practice this trap move-by-move
Open the Sicilian Defence: Knight Fork (Ekenberg–Alfredsson) 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.