Chessy
Scandinavian Defense: Gubinsky-Melts Defense after 4.Nb5 — Black's Guide
The Scandinavian Defense is a bold way to meet 1.e4, and the Gubinsky-Melts Defense with 4.Nb5 is a sharp, offbeat sideline. After 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.Nb5 Qd8, White has spent a tempo moving their knight twice while your queen retreats safely. The statistics might surprise you: across over 11,600 games, Black actually wins 50.9% of the time from here — that's better than White's 45.1%. Stockfish gives a small edge to your opponent at +0.35, but in practice, club players struggle to navigate the position correctly. The drill below lets you practise the best replies and punish the common inaccuracies.
Play the Scandinavian Defense: Gubinsky-Melts Defense: Nb5 against the engine
Free, no signup — you play black, the engine adapts to your level.
Play through the position in the interactive drill below — practise Black's setup against d4, test your responses to d3 and Qf3, and see how the engine adapts.
Create a free account →What's the Big Idea for Black?
Your queen has voluntarily returned to d8, but you haven't lost any time — White's knight on b5 is loose and can be chased away with...c6 whenever you like. Black's main plan is simple: develop naturally, challenge White's centre, and exploit the fact that White's knight is misplaced. The engine's top continuation for White is 4...Qd8 5.d4 Nf6 6.Nf3 c6 — after which the knight on b5 retreats to c3 or a3. Your pawn to c6 wins a tempo, and suddenly you have a solid position with equal development. You're fighting for the centre with ...c6 and ...Nf6, and the open d-file can become a home for your rook. The idea is to stay solid and let White prove that the knight sortie was worth something.
The Engine's Best Answer to 4.Nb5
Stockfish recommends that White play 5.d4 — the most principled move, grabbing the centre. After 5...Nf6 6.Nf3 c6, you've forced the knight back while building a sturdy pawn chain. This line has been played nearly 4,000 times in the database, and White's winning percentage is only 48.9% — meaning you actually score above 50% as Black in the most critical continuation. Your job is simple: don't panic, don't lash out. Develop your kingside with ...Bf5 or ...Bg4 next, castle, and you have a perfectly playable position. The engine may prefer White slightly, but at club level, the practical chances are even.
White's Most Common Mistakes — and How to Punish Them
The statistics reveal that many White players mishandle this position. Here are the two biggest errors to watch for: - 5.d3 is an inaccuracy that loses about 0.6 pawns of advantage. It's too passive — White allows you to seize the centre. In 1,985 games, White scored just 42.4% after this move. Your plan is straightforward: play ...Nf6, ...Bg4, and ...e5, claiming the centre while White's knight remains awkward. - 5.Qf3 is worse — a full mistake, losing about 1.1 pawns. White hopes to intimidate you with queen pressure, but you can simply chase it away with ...Nf6, following up with ...c6 to attack the knight. White scored only 42.4% after this move too. These are the moments to stay calm, develop efficiently, and let White's misplaced pieces tell the story.
How to Handle White's Most Popular Replies
The most-played move is 5.d4 (3,937 games), which we've covered — reply with 5...Nf6. If White instead plays 5.Nf3 (2,490 games, White scores 45.5%), you can respond with ...Bg4, pinning the knight and preparing ...c6. White's third-most popular move is 5.d3 — remember, that's an inaccuracy, so hit back with ...Nf6 and ...e5. If White tries 5.Bc4 (1,174 games, White scores just 41.5%), you have ...Nf6, and if White pushes e5? You simply play ...c6, attacking the knight and gaining time. In every case, the recipe is the same: develop your knight to f6, play ...c6, and don't waste tempos chasing phantom attacks.
Results across 11,673 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| d4 | 3,937 | 48.9% |
| Nf3 | 2,490 | 45.5% |
| d3 | 1,985 | 42.4% |
| Bc4 | 1,174 | 41.5% |
| Qf3 | 1,085 | 42.4% |
| Nc3 | 283 | 35.3% |
Frequently asked questions
Is the Scandinavian Defense after 4.Nb5 good for Black?
Statistically, yes — Black scores 50.9% from this position in practice, winning more often than White does. The engine gives White a tiny theoretical edge of +0.35, but the real-world results show this is a fully playable and dangerous line for Black.
What is the best move for Black after 4.Nb5 Qd8?
Black's job is to respond to whatever White plays. The engine's top reply to White's best move (5.d4) is 5...Nf6, followed by ...c6 to drive the knight back. The key is to develop naturally, not to rush. Your plan is ...Nf6, ...c6, and then choose between ...Bf5 or ...Bg4.
How do I punish 5.d3 or 5.Qf3 in the Gubinsky-Melts?
Both are mistakes. After 5.d3, play ...Nf6 and quickly ...e5 to claim the centre. After 5.Qf3, simply develop with ...Nf6 — the queen will have to move again, and you gain time. In both cases, follow up with ...c6 to attack the knight on b5.
Why does White play 4.Nb5 in this line?
White hopes to disrupt your development by attacking the queen and gaining a tempo. In practice, the knight ends up awkwardly placed on b5, and you can chase it away with ...c6 while developing. White scores well below 50% after several common replies, so it's often a speculative move.