Italian Game: Two Knights Defence
Also known as Two Knights Defence
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6
The Two Knights Defence is Black's fighting answer to the Italian. Instead of the calm 3...Bc5, Black plays 3...Nf6 to attack e4 and welcomes razor-sharp play - above all the famous 4.Ng5 lines, where Black sacrifices a pawn (sometimes more) for rapid development and a fierce initiative.
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What it does
After 1.e4 e5 2.Nf3 Nc6 3.Bc4, Black replies 3...Nf6, immediately counterattacking the e4-pawn rather than defending with a bishop. This forces White to choose: defend e4 quietly, or grab the initiative with 4.Ng5, hitting the soft f7-square. The most testing line runs 4.Ng5 d5 5.exd5 Na5, where Black gives up a pawn to chase White's bishop and seize the initiative across the board.
When to use it
Choose the Two Knights when you are Black, facing the Italian (3.Bc4), and want an active, double-edged game rather than the more solid Giuoco Piano with 3...Bc5. It rewards players who enjoy initiative and tactics and are happy to invest a pawn for activity. If you prefer calm, material-secure positions, the quieter 3...Bc5 or the Berlin-style ...Be7 setups may suit you better.
Why it works
By counterattacking e4 at once, Black refuses to play passively. The 4.Ng5 pawn grab looks greedy: the knight makes two moves and Black gets superb development, half-open files and lasting pressure on White's awkward queenside. Decades of practice show Black's compensation is real, which is why many White players sidestep with 4.d3 or 4.d4 instead.
Key ideas
- 3...Nf6 counterattacks e4 instead of defending with 3...Bc5
- 4.Ng5 targets f7 - the sharpest and most famous try
- 4...d5 strikes the centre rather than defending f7
- 5...Na5 chases the c4-bishop and grabs the initiative
- Black gives a pawn for fast development and the initiative
- 4.d3 and 4.d4 are White's quieter ways to avoid the gambit
Watch out
Beware the Fried Liver: if Black plays 5...Nxd5? instead of 5...Na5, White can sacrifice with 6.Nxf7 Kxf7 7.Qf3+, dragging the king out with a strong attack. The main lines keep ...Na5. White should also note that 4.Ng5 only works because of the ...d5 break - careless development hands Black easy equality.