Final position — Black is winning
Sicilian Defence: Knight Fork (Teupe–Wittig)
Black wins in 9 moves with a decisive material gain. (Teupe - Wittig, Landau 1988)
The moves
| 1. | e4 | c5 |
| 2. | Nf3 | d6 |
| 3. | d4 | cxd4 |
| 4. | Nxd4 | Nf6 |
| 5. | Nc3 | g6 |
| 6. | f4 | Bg7 |
| 7. | e5 | dxe5 |
| 8. | Bb5+ | Kf8 |
| 9. | Ne6+ |
How the Sicilian Defence: Knight Fork (Teupe–Wittig) works
The Sicilian Defence: Knight Fork (Teupe–Wittig) is a classic chess opening trap arising from the Sicilian Defence. In this line Black wins decisive material by move 9, punishing a natural-looking but losing idea from White.
The full sequence runs 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Bg7 7.e5 dxe5 8.Bb5+ Kf8 9.Ne6+. 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 (Teupe - Wittig, Landau 1988). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Sicilian Defence: Knight Fork (Teupe–Wittig) 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.