Two Knights Defense

Overview

The Two Knights Defense (1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6) is the aggressive, counterattacking answer to the Italian. By developing the knight to f6 instead of the bishop, Black invites the sharp 4. Ng5 and gambit lines as old as chess literature itself.

Position after 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6

Key Ideas

• After 4. Ng5 d5 5. exd5, Black often sacrifices a pawn (or more) for a powerful initiative.
• The Fried Liver Attack (6. Nxf7) is a famous trap that punishes the natural 5...Nxd5.
• Quieter players prefer 4. d3 or 4. d4, sidestepping the theoretical jungle.
• Black accepts material imbalance and a lead in development in return for long-term activity.

Main Variations

History

Analyzed since the 16th century by Polerio and Greco, the Two Knights has tested the boundary between sound sacrifice and reckless attack for more than 400 years and remains a favorite of attacking players.