Chessy
Italian Game: Blackburne-Kostić Gambit (Nc3) – Playing Black
Welcome to one of the sharpest early deviations in the Italian Game. After 1.e4 e5 2.Nf3 Nc6 3.Bc4, instead of developing normally, Black throws a wrench in the works with 3...Nd4, the Blackburne-Kostić Gambit. White can reply 4.Nc3, and Black answers with 4...Bd6. The engine evaluation is +1.79 — a near-winning advantage for White — so let's be honest: you are playing a risky, unsound gambit. But the statistics show Black scores 41.4% in practice, so your opponents will need to know what they're doing. Below you'll find the critical line, the most common replies, and the mistakes to punish. Fire up the interactive drill and test yourself.
Play the Italian Game: Blackburne-Kostić Gambit: Nc3 against the engine
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Play through the position against the adaptive engine below — practise meeting 5.Nxd4, punishing 5.Ng5, and navigating the most common replies. Create a free (f
Create a free account →What's the Idea Behind 3...Nd4?
The Blackburne-Kostić Gambit aims to disrupt White's natural development immediately. By jumping the knight to d4, Black offers a pawn sacrifice (the knight can be taken by the bishop or knight) in exchange for rapid piece activity and a chance to seize the centre. After 4.Nc3 Bd6, Black's setup looks unusual — the bishop on d6 eyes the g3-square, and the knight on d4 is annoyingly placed. The position is objectively bad for Black (the engine gives +1.79, a big advantage for White), but in practical play it creates confusion. Many White players either play too cautiously or make one of the known mistakes in this line, giving Black real winning chances. Your job is to know which White moves are dangerous and which ones you can punish.
The Engine's Best Move: Nxd4
White's strongest reply is 5.Nxd4, immediately removing the annoying knight. The engine's preferred continuation runs: Nxd4 exd4 Nb5 Qe7. After these moves, White has a serious advantage — the pawn on d4 is a target, but White's knight on b5 is active and Black's queen on e7 is slightly exposed. This line scores 52.2% for White across 3,389 games, which is actually the lowest winning percentage among the major replies. That doesn't mean it's bad — it just means even after the correct move, Black still has practical chances. If your opponent plays 5.Nxd4, you should be ready to respond accurately and make the position as complicated as possible.
White's Mistakes to Exploit
Your opponent is more likely to play something other than Nxd4 — and that's where your chances surge. The most common move in the database is 5.d3, played 3,674 times, but it's an inaccuracy that loses about 0.9 pawns compared to the best move. White scores 58.5% from here, so you are still an underdog, but the position is much more playable. Even better for you: 5.O-O (played 1,397 times) is a full mistake, losing roughly 1.2 pawns. And 5.Ng5 (378 games) is a blunder that drops about 5.3 pawns — if you see this, you can pounce immediately. White's score from 5.Ng5 plummets to just 36.0%, meaning Black scores 64% in those games. Knowing these categories helps you gauge your chances: see 5.d3 and feel okay; see 5.O-O and feel confident; see 5.Ng5 and start calculating a win.
What the Statistics Tell Us
From the full dataset of 9,508 games at this exact position, White wins 54.9%, draws appear only 3.7% of the time, and Black wins 41.4%. That Black win rate is surprisingly high for a position that's objectively near-decisive for White. The low draw rate (3.7%) tells you this is a double-edged, tactical melee — very few quiet, drawn games arise from the Blackburne-Kostić. Most games end decisively, and almost half the time it's Black celebrating. These numbers reinforce the gambit's practical value: the position is bad on paper, but your opponents will make mistakes far more often than the engine would. The drill below will help you recognise the critical moments and punish those inaccuracies.
Results across 9,508 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| d3 | 3,674 | 58.5% |
| Nxd4 | 3,389 | 52.2% |
| O-O | 1,397 | 57.4% |
| Ng5 | 378 | 36.0% |
| Nd5 | 158 | 61.4% |
| a3 | 126 | 56.3% |
Frequently asked questions
Is the Italian Game Blackburne-Kostić Gambit sound?
No, it is objectively unsound. The engine evaluates the position after 4...Bd6 as +1.79, a near-winning advantage for White. However, the gambit scores 41.4% for Black in practice because many White players mishandle it. It is a practical surprise weapon, not a theoretically solid opening.
What's the difference between 5.d3, 5.O-O, and 5.Nxd4?
5.Nxd4 is White's best move, keeping a large advantage. 5.d3 is an inaccuracy that loses about 0.9 pawns compared to the engine's choice, making life easier for Black. 5.O-O is a proper mistake, losing roughly 1.2 pawns. The blunder 5.Ng5 loses about 5.3 pawns and gives Black excellent winning chances.
Should I play the Blackburne-Kostić Gambit as a beginner?
The gambit is risky because you start from a clearly worse position. If your goal is to learn solid chess principles, it is not ideal. But if you want sharp, tactical games where your opponent can easily go wrong — and you don't mind losing sometimes when they know the refutation — it can be a fun weapon at club level.
What is the Blackburne-Kostić Gambit main line after 3.Bc4?
The gambit begins with 3...Nd4. The most common response is 4.Nf3xe5, capturing the e5 pawn, but this page covers the Nc3 line: 4.Nc3 Bd6. In that position White's best move is 5.Nxd4, leading to 5...exd4 6.Nb5 Qe7.