The Halloween Gambit arises in the Four Knights Game after 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 (ECO C47). White sacrifices a knight in order to drive Black's pieces back with the pawns d4 and e5 and seize an enormous pawn centre.
For the piece White gets a powerful centre and space, chasing the f6 knight with the e5 pawn. The idea is risky: with accurate defence Black is a piece up, but in practice the pawn advance can be very unpleasant.
A rare, adventurous gambit with a scary name - a weapon for bold players who like unconventional attacking chess, especially at fast time controls.
Set it up on the board, move the pieces around and copy the FEN - or open the full walkthrough of the opening in a separate article.
Drag a piece onto the board, or click a piece and then click the squares. The cross beside the pieces sweeps every piece of that colour off the board, and a single piece can be dragged off the edge.
The pieces will be arranged into the chosen pattern.
It is the mating side to move. Find mate in one.
Openings, endgame positions and breakthrough studies - the set-up appears on the board.
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