4Nxe4

4Nxe4 refers to a specific move in the Four Knights Game, a classical chess opening. The notation denotes White’s fourth move, when White captures on e4 with a knight. This recapture typically occurs after Black has played ...Nxe4 on the third move, exchanging a knight for White’s central pawn and inviting a symmetrical, balanced position.

Opening context: The Four Knights Game starts with 1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6. In many lines Black tries 3...Nxe4, capturing the pawn on e4 with the knight from f6. White then responds with 4 Nxe4, using the knight from c3 to recapture on e4. After this sequence, the game often develops into a solid, symmetrical structure with both sides aiming to control the center and complete development.

Strategic ideas: After 4 Nxe4, White’s knight on e4 centralizes and pressures key squares such as c5 and f6, while Black retains a knight on c6 and a pawn setup that supports central play. Common continuations involve reaffirming central tension with ...d5, developing pieces, and choosing plans such as d4, Bb5, or Re1 depending on Black’s setup. The line tends to produce a relatively tactical yet evenly balanced middlegame, with chances for both sides to seize initiative through central or flank activity.

Notes: 4 Nxe4 is one of several possible replies in the Four Knights Game and is less aggressive than lines like 4 Nxe5 but remains a standard, well-documented choice in classical practice. It helps maintain symmetrical development and flexible pawn structures for both sides.