The Stafford Gambit is an offbeat, deeply tricky line of the Petrov: Black answers 3.Nxe5 with 3…Nc6 and, after 4.Nxc6 dxc6, hands over a pawn for lightning development and open lines toward f2. It is dubious by the book but a minefield in practice. This trap shows the worst that can happen to a careless White: a checkmate by move eight.
After 4.Nxc6 dxc6, Black has rapid development aimed at f2; if White pins with 6.Bg5, then 6…Nxe4! and even 7.Bxd8 loses to 7…Bxf2+ 8.Ke2 Bg4#.
By giving up the pawn with 3…Nc6 4.Nxc6 dxc6, Black opens the d-file and the c8–h3 diagonal and gets the bishops out fast. After 5.d3 Bc5 the bishop already rakes at f2. The natural-looking pin 6.Bg5?? is the trap: Black answers 6…Nxe4!, and now even the greedy 7.Bxd8 — grabbing the queen — loses. After 7…Bxf2+ 8.Ke2 (the king has no safe square) 8…Bg4# the light-squared bishop delivers mate: the king on e2 is hemmed in by its own pieces, checked by the bishop on g4 with no escape and no capture. Black gave up a queen and still mates — because White's king was caught in the open.
6. Bg5 — After 5…Bc5 the losing move is 6.Bg5??, pinning the f6-knight to the queen. It looks like a useful developing pin, but it ignores that f2 is already weak and that …Nxe4 unleashes the attack. White stays safe with calm moves such as 6.Be2, 6.Nc3, or 6.h3, declining to chase material and keeping f2 and the king covered.
Against the Stafford, develop solidly and do not grab material — the gambit's whole point is to punish greed. Keep f2 defended and the king safe with quiet moves like 6.Be2, 6.Nc3, or 6.h3 rather than the tempting pin 6.Bg5. If White simply declines to win the queen and shores up f2, Black's compensation evaporates and the extra pawn tells.
Not by the book — with accurate play White keeps the extra pawn and a solid edge. But it is extremely dangerous over the board: one greedy or careless move, like 6.Bg5 followed by taking the queen, can lose on the spot. Treat it as a practical weapon, not a sound opening.
Don't pin with 6.Bg5 and don't chase material. Calm developing moves such as 6.Be2, 6.Nc3, or 6.h3 keep f2 covered and the king safe; once White declines the bait, the sacrificed pawn simply leaves Black down material.
A trap only works if your opponent makes the mistake — strong players sidestep these, which is why each page also shows how to avoid it. Every line here is checked legal with the same engine the board runs, and every checkmate is verified.