411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nf6/3. Nxe5/3...Nc6/4. Nxc6/4...dxc6/5. e5/5...Ne4
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Stafford Gambit rd bd qd kd bd rd pd pd pd pd pd pd pd pl nd pl pl pl pl pl pl pl rl nl bl ql kl bl rl
Stafford Gambit
5...Ne4
Rather than moving their knight back, Black plants his knight in the middle of the board. It aims at the weak f-pawn and White is tempted to remove the knight from the square. The inconspicuous move actually sets up a trap if White pushes their /6. d3/ or /6. f3/ pawn. Instead, a good response for White is 6. d4, creating a strong center in the middle of the board.
References
Petrov Defence