Four Knights Game: Nxe5 – Black's Golden Opportunity

After 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6, White plays 4.Nxe5. The knight on e5 attacks your knight on f6, but after you recapture with 4...Nxe5, White has exchanged a developed knight for one that had only moved once. More importantly, White now has the move but no immediate threat — and the advanced e4-pawn can become a target. The engine's favourite follow-up is 5.d4, after which the recommended line continues 5...Ng6 6.e5 Ng8. White's e5 pawn looks ambitious but your knight retreats safely, and you'll soon develop with ...d6, ...Be7, and ...0-0 while White's pawn centre may prove overextended.

The most popular continuation by a huge margin is 5.d4, played in 768,360 games (White scores 53.4% from there). That score is slightly better than White's overall 52.4% in the position, but don't let that fool you — the engine still evaluates it as clearly better for Black after the correct reply. The best response is 5...Ng6, retreating the knight to a safe square where it eyes f4 and e5. Then 6.e5 forces your other knight back to g8. That might look clumsy, but you've lost no material and White has pushed pawns forward without completing development. Your plan: play ...d6 next to challenge the e5-pawn, develop your kingside with ...Be7, castle, and enjoy the superior pawn structure and piece activity that the engine's -1.47 reflects.

Many White players in this position reach for something other than d4 — and every common alternative is an error you can exploit. If White plays 5.f4 (7,832 games), it's an inaccuracy that loses about 0.9 pawns. Your knight on e5 is attacked, but you simply move it to g6 or c6 and White's f4 pawn has weakened the kingside. Worse is 5.Nd5 (3,111 games), a mistake costing roughly 1.9 pawns. White threatens Nxc7+, but you can reply 5...Nxe4 or 5...Bc5 with gain of tempo. And 5.d3 (2,859 games) is also a mistake (about -1.5 pawns) — it's too passive, allowing you to chase the knight with ...Bc5 or simply develop with ...Bc5 and castle quickly. The rarest moves, 5.Bc4 and 5.Bb5, score even worse for White (14.6% and 20.8% respectively), which tells you how dangerous the position is for them once they've traded on e5.

Across 793,057 games, White wins 52.4%, draws 3.1%, and Black wins 44.5%. At first those numbers look healthy for White, but remember that in the Four Knights Game White's usual score hovers around 50% from equal positions. The 44.5% Black win rate here is unusually high for a line where Black is supposedly down a pawn temporarily. The combination of a clear engine advantage (-1.47) and Black's strong practical results tells you this is a line where White is walking a tightrope. Most club players who try 4.Nxe5 don't know the best follow-ups, and the mistakes they make — especially f4, Nd5, or d3 — give Black a decisive edge quickly. If you know the simple reply 5...Ng6 and can develop naturally, you'll find yourself with the better side of a comfortable middlegame.