King's Gambit Declined - Falkbeer - Reti variation
1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Nf6 5. Qe2
White pushes the king's pawn to e4. Black plays the king's pawn to e5. White plays the f-pawn to f4.
Black plays the queen's pawn to d5. White captures on d5 with the king's pawn. Black pushes the king's pawn to e4.
White moves the queen's pawn to d3. Black develops the knight to f6. White places the queen to e2.