The Stafford Gambit: the Bg4 mate every 1.e4 player must know

The internet’s favorite trap. Black gives a pawn for fast development — and every natural White move walks into something. This is the most famous line: White pins the queen, takes it, and gets mated anyway.

Lesson

White to move. Main line: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. d3 Bc5 6. Bg5 Nxe4 7. Bxd8 Bxf2+ 8. Ke2 Bg4#

6...Nxe4!! is the point: the "pinned" knight moves anyway. 7.Bxd8 wins the queen — and loses the game: 7...Bxf2+ 8.Ke2 Bg4# is mate because the g1-knight that would block on f3 was traded off on move four. That detail is the whole trap.

Note the geometry of the final position: Bf2 covers e1 and e3, Ne4 covers d2, White’s own queen blocks d1, and Bg4 delivers the check with no block available. Three minor pieces, total coordination.

The refutation is boring on purpose: 5.Nc3 (or 5.d3 followed by resisting Bg5) declines everything and consolidates the extra pawn. The Stafford is a masterclass in why "winning material" and "winning" are different claims.

The antidote: 5.Nc3: 5. Nc3 — develop, guard e4, decline every gift. White keeps the extra pawn with a safe position.