Final position — Black delivers mate
Queen's Pawn Game: Back-Rank Mate (Gibaud–Lazard)
Black wins in 6 moves by checkmate. (Gibaud - Lazard, 1924.??.??)
The moves
| 1. | d4 | Nf6 |
| 2. | Nd2 | e5 |
| 3. | dxe5 | Ng4 |
| 4. | h3 | Ne3 |
| 5. | fxe3 | Qh4+ |
| 6. | g3 | Qxg3# |
How the Queen's Pawn Game: Back-Rank Mate (Gibaud–Lazard) works
The Queen's Pawn Game: Back-Rank Mate (Gibaud–Lazard) is a classic chess opening trap arising from the Queen's pawn game. In this line Black delivers checkmate on move 6, punishing a natural-looking but losing idea from White.
The full sequence runs 1.d4 Nf6 2.Nd2 e5 3.dxe5 Ng4 4.h3 Ne3 5.fxe3 Qh4+ 6.g3 Qxg3#. 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 (Gibaud - Lazard, 1924.??.??). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Queen's Pawn Game: Back-Rank Mate (Gibaud–Lazard) 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.