Chessy
The Scandinavian Defense: Blackburne-Kloosterboer Gambit d4 Line
The Scandinavian Defense has a reputation for being solid but a bit passive — and then the Blackburne-Kloosterboer Gambit comes along and flips the script. After 1.e4 d5 2.exd5 c6 3.d4 cxd5, White has recaptured on d5 and now faces a choice. You, as Black, have traded a pawn for quick development and open lines. This position is deeply imbalanced despite the engine calling it nearly equal: the Lichess database shows Black winning 47.7% of games from here, practically neck-and-neck with White. That's rare for a gambit, and it means the pressure is on White to find the right plan. The drill below will help you navigate the most common paths and punish any slip-ups.
Play the Scandinavian Defense: Blackburne-Kloosterboer Gambit: d4 against the engine
Free, no signup — you play black, the engine adapts to your level.
Jump into the interactive drill below and practise meeting each of White's replies — Nf3, Nc3, c4, Bd3, and more — until the right response feels automatic. It’
Create a free account →What You're Fighting For
The Blackburne-Kloosterboer Gambit isn't about refuting White's play — it's about generating active piece play while your opponent figures out how to hold onto their extra pawn or consolidate. After 3...cxd5, Black has a semi-open c-file, easy development for the queen's bishop and knight, and a central foothold on d5. White, by contrast, has a pawn on d4 that can become a target if they're careless. The statistics back this up: in the most popular line Nf3 (3.3 million games), White scores just 47.3% — below average for White. That tells you Black is doing something right. Your job is to develop quickly, challenge White's centre, and not let them stabilise the position with quiet moves.
The Engine's Recommendation
Stockfish's top choice here is Nf3, which continues toward Nf3 Nc6 c4 Nf6. The evaluation sits at +0.25, a tiny edge for White. That means you are very slightly worse, but only by a hair — this is well within practical play for a club game. The engine wants White to play solidly, bringing out the knight and then challenging your d-pawn with c4. Your response is natural: develop the knight to c6, and after c4, put your other knight on f6, pressuring the white centre and preparing to castle kingside. This is a straightforward, principled setup that leaves both sides with chances.
What the Statistics Reveal
The Lichess database of over 10.7 million games gives you a clear picture of what actually happens at club level. The overall result split is strikingly balanced: White wins 47.8%, draws 4.5%, Black wins 47.7%. Compare the main replies White can choose from: - Nc3 (3 million games): White scores only 45.0% — the worst result for White among all major options. This is a crucial insight: when White develops the queen's knight to c3, Black actually scores better than White. The knight on c3 does not help White control the centre as effectively, and it blocks the c-pawn from advancing. - c4 (1.6 million games): White scores 51.9% — the best-scoring move for White. This is the engine's second choice but it performs well in practice. - Bd3 (1.4 million games): White scores 52.7%, also strong. So the statistically most dangerous replies for Black are c4 and Bd3, while Nc3 is actually good news.
The Most Common Mistake to Exploit
If your opponent plays Nc3, you should feel comfortable. White's score drops to 45.0%, meaning you are the favourite from that point. The knight on c3 blocks the c-pawn, making it harder for White to play c4 and challenge your central pawn. That gives you time to develop naturally with ...Nf6 and ...Nc6, contesting d4 and building piece activity. A natural continuation could see you playing ...e6 to open lines for your light-squared bishop while keeping the pressure on d4. The key is to keep the tension and not rush to trade pieces — White's position is less harmonious than it looks, and your active pieces can create problems long into the middlegame. If White plays c4 or Bd3 instead, be more careful: those moves score well for them and indicate a player who knows the line.
Results across 10,757,763 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nf3 | 3,305,796 | 47.3% |
| Nc3 | 3,079,734 | 45.0% |
| c4 | 1,612,828 | 51.9% |
| Bd3 | 1,375,455 | 52.7% |
| Bb5+ | 454,610 | 43.2% |
| c3 | 349,296 | 48.1% |
Frequently asked questions
Is the Blackburne-Kloosterboer Gambit sound for Black?
It is perfectly playable at club level. The engine gives White a tiny +0.25 edge, and the Lichess database shows Black winning 47.7% of games — almost exactly even with White's 47.8%. The gambit leads to imbalanced positions where active play matters more than the pawn.
What is White's best reply to the Blackburne-Kloosterboer Gambit?
The engine recommends Nf3 (+0.25), developing a knight and preparing to challenge the centre with c4. In practice, the best-scoring moves for White are Bd3 (52.7% for White) and c4 (51.9%). The most common reply, Nf3 (3.3 million games), only scores 47.3% for White, which is below average.
Which White move should Black be happiest to see?
Nc3 is the reply you want. White scores only 45.0% from that position — the worst of all major options. The knight on c3 blocks White's c-pawn and limits White's central control. Take advantage by developing actively with ...Nf6 and ...Nc6, keeping the pressure on d4.
What is the typical plan for Black after White plays Nf3?
Continue with Nc6, challenging the d4 pawn. After White plays c4, answer with Nf6, developing and putting pressure on the centre. This is the engine's suggested continuation from the Nf3 line. You'll have active piece play and can castle kingside with a comfortable position.
How many games feature the Scandinavian Defense: Blackburne-Kloosterboer Gambit: d4?
Over 11 million Lichess games have reached the Scandinavian Defense: Blackburne-Kloosterboer Gambit: d4 position. White wins 47.8%, Black wins 47.7%, with 4.5% draws — based on real rated games.