Final position — White delivers mate
Benko Gambit: Smothered Mate
White wins in 9 moves by checkmate. (Hultin - Fromme, Sweden 1992)
The moves
| 1. | d4 | Nf6 |
| 2. | c4 | c5 |
| 3. | d5 | b5 |
| 4. | cxb5 | a6 |
| 5. | Nc3 | axb5 |
| 6. | e4 | b4 |
| 7. | Nb5 | Nxe4 |
| 8. | Qe2 | Nf6 |
| 9. | Nd6# |
How the Benko Gambit: Smothered Mate works
The Benko Gambit: Smothered Mate is a classic chess opening trap arising from the Benko Gambit. In this line White delivers checkmate on move 9, punishing a natural-looking but losing idea from Black.
The full sequence runs 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.e4 b4 7.Nb5 Nxe4 8.Qe2 Nf6 9.Nd6#. 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 (Hultin - Fromme, Sweden 1992). Recognising it early lets you either spring it as White or sidestep it as Black.
Practice this trap move-by-move
Open the Benko Gambit: Smothered Mate 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.