Final position — Black is winning
Vienna Game: Bxf7 Sacrifice (Kadisch–NN)
Black wins in 10 moves with a decisive material gain. (Kadisch - NN, 1931.??.??)
The moves
| 1. | e4 | e5 |
| 2. | Nc3 | Nf6 |
| 3. | f4 | d6 |
| 4. | Nf3 | Nbd7 |
| 5. | Bc4 | Be7 |
| 6. | Bxf7+ | Kxf7 |
| 7. | Ng5+ | Kg6 |
| 8. | f5+ | Kxg5 |
| 9. | d3+ | Kh4 |
| 10. | Qf3 |
How the Vienna Game: Bxf7 Sacrifice (Kadisch–NN) works
The Vienna Game: Bxf7 Sacrifice (Kadisch–NN) is a classic chess opening trap arising from the Vienna Game. In this line Black wins decisive material by move 10, punishing a natural-looking but losing idea from White.
The full sequence runs 1.e4 e5 2.Nc3 Nf6 3.f4 d6 4.Nf3 Nbd7 5.Bc4 Be7 6.Bxf7+ Kxf7 7.Ng5+ Kg6 8.f5+ Kxg5 9.d3+ Kh4 10.Qf3. 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 (Kadisch - NN, 1931.??.??). 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: Bxf7 Sacrifice (Kadisch–NN) 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.