411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...e5/2. dxe5/2...f6
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Englund Gambit: Soller Gambit A40 Englund gambit
Soller Gambit
Black offers a second pawn with 2...f6. Although it looks like a weakening move, White must be careful to avoid falling into potential traps.
White can capture the pawn with 3. exf6, but Black gains a lead in development in exchange after re-capturing with the knight.
Alternatively, White can give back the pawn by playing 3. e4. Note that Black cannot immediately capture the e5 pawn as 3...fxe5?? loses to 4. Qh5+.
References
vrZ3WwAXBsQ&t=300s Ending the Englund Gambit | Busting Unsound Openings with GM Naroditsky no