King's Gambit Accepted: Allgaier Gambit, Thorold Attack

King's Gambit Accepted: Allgaier Gambit, Thorold Attack is a gambit, classified under ECO code C39 within the Open Games family. As with all gambits, one side sacrifices material early — usually a pawn — in exchange for development, open lines, or initiative.

The Open Games group covers open games — classical 1.e4 e5 openings where both sides contest the centre directly with pawns.

It is reached after 13 plies of play, with the move sequence 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7 Kxf7 7. d4.

It is a variation of King's Gambit Accepted: Kieseritzky Gambit, Cotter Gambit, which itself descends from the root opening King's Pawn Game.

It continues primarily into one named line, King's Gambit Accepted: Allgaier, Cook Variation.

Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.