Final position — Black delivers mate
Bird's Opening: Mate in 6 (Unknown–Du Mont)
Black wins in 6 moves by checkmate. (Unknown - Du Mont, France 1802)
The moves
| 1. | f4 | e5 |
| 2. | fxe5 | d6 |
| 3. | exd6 | Bxd6 |
| 4. | g3 | Qg5 |
| 5. | Nf3 | Qxg3+ |
| 6. | hxg3 | Bxg3# |
How the Bird's Opening: Mate in 6 (Unknown–Du Mont) works
The Bird's Opening: Mate in 6 (Unknown–Du Mont) is a classic chess opening trap arising from the Bird's opening. In this line Black delivers checkmate on move 6, punishing a natural-looking but losing idea from White.
The full sequence runs 1.f4 e5 2.fxe5 d6 3.exd6 Bxd6 4.g3 Qg5 5.Nf3 Qxg3+ 6.hxg3 Bxg3#. 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 (Unknown - Du Mont, France 1802). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Bird's Opening: Mate in 6 (Unknown–Du Mont) 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.