The Zukertort Opening: The Potato begins with 1.Nf3 d5 2.a4 – a quirky line that immediately asks Black a question. After your second move the position has been reached nearly twenty thousand times online, yet many players on both sides are unsure what to do next. The engine evaluates it at -0.36, a tiny edge in Black's favour, so you are slightly worse from the start. That might sound off-putting, but the statistics are surprisingly balanced: White still wins 44.7% of games. This page breaks down what the computer recommends, how the most popular replies work, and where you can look for an edge. Then scroll down to test yourself in the interactive drill.
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Play the Zukertort Opening: The Potato against the engine
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Now that you understand the ideas behind 2.a4, try the interactive drill below. The engine adapts to your moves, helping you practise against the most common –
Find your own #1 mistake — free →What White Is Actually Fighting For
After 1.Nf3 d5 2.a4 you have not fought for the centre in the usual way – no d4 or e4 push. Instead, you've played a developing move followed by a wing pawn advance. Your long-term idea is to keep the game flexible. The a4 pawn can later support a b3-b4 break, and the knight on f3 is ready to jump to e5 or d4 once the centre clarifies. You are not trying to steamroll Black; you are aiming for a sound, slightly offbeat position where Black might misjudge the pace. The engine's best answer, c5, is a solid central reaction. If Black plays that, you can continue e3 Nc6 d4, reaching a respectable but not threatening centre. Your task is to develop efficiently and wait for Black to overreach.
The Engine's Recommended Answer to 2.a4
The computer's top choice for Black is c5. This move stakes a claim in the centre and makes it harder for you to play d4 comfortably. The suggested continuation runs c5 e3 Nc6 d4. After those four moves Black has a classical-looking centre with pawns on d5 and c5, while you have a pawn on d4 and a knight on f3. The position is perfectly playable – you are slightly worse, but only by a tiny margin. If Black does not know the theory, they might drift into a passive setup that gives you time to finish development with Be2, O-O, and later try to play on the queenside with b3 and Bb2.
What the Statistics Tell Us
Across 19,472 games from this exact position, White wins 44.7% of the time, draws 4.1%, and Black wins 51.2%. Those numbers are closer than the engine evaluation might suggest. Here is how the five most common Black replies perform for White:
The Most Popular Black Replies at a Glance
- Nc6 (5,615 games) – White scores 44.5%. A natural developing move that eyes the centre. - Nf6 (3,247 games) – White scores 44.1%. Black develops the kingside knight, ready to castle. - c5 (2,667 games) – White scores 43.8%. The engine's top pick, but statistically it does not crush you. - e6 (1,924 games) – White scores 45.1%. A solid, flexible choice that opens lines for the light-squared bishop. - Bg4 (1,401 games) – White scores 45.0%. Pinning your knight, a common club-player reaction. - Bf5 (1,358 games) – White scores 43.5%. The most testing try by the numbers – so be ready if Black brings out the bishop before the knight.
Where You Can Punish a Mistake
Because 2.a4 is unusual, Black often picks a move that is too passive or too aggressive. If Black plays something like b6 or g6 early, you can seize space in the centre with d4. If Black neglects development and pushes the h-pawn or plays a5, your knight on f3 and the possibility of e4 (after some preparation) can give you a comfortable game. The key is not to rush. Develop your kingside, castle quickly, and only then decide whether to challenge Black's centre with c4 or to expand on the queenside with b3. The drill below will help you practise against the most frequent replies so you learn the typical patterns.
Results across 19,472 Lichess games
| Most-played continuation | Games | White wins | |
|---|---|---|---|
| 1 | Nc6Main line | 5,615 | 44.5% |
| 2 | Nf6 | 3,247 | 44.1% |
| 3 | c5 | 2,667 | 43.8% |
| 4 | e6 | 1,924 | 45.1% |
| 5 | Bg4 | 1,401 | 45.0% |
| 6 | Bf5 | 1,358 | 43.5% |
Frequently asked questions
Is the Zukertort Opening: The Potato a good surprise weapon for White?
It can be, because many Black players do not know how to react to 2.a4. While the engine gives a slight edge to Black (-0.36), White still wins 44.7% of games – which is respectable. If you are comfortable with a flexible, unorthodox position, it is a reasonable choice at club level.
Why is this opening called 'The Potato'?
The name is just a playful label given to the move 2.a4 after 1.Nf3 d5. It is not a traditional opening name, but it has stuck in online databases and chess communities because the move looks a bit odd – like a 'potato' – compared to mainstream options like 2.d4 or 2.g3.
What is the most common mistake Black makes against 2.a4?
Statistically, Black often develops the bishop to f5 (1,358 games, White scores 43.5%). That move is slightly worse for White than the engine's top choice c5, so Black is not making a glaring error there. A bigger mistake would be playing passively or wasting tempi – for example, moving the same piece twice or pushing pawns without purpose. If Black does that, your chances improve quickly.
What should I do if Black plays c5, the engine's best move?
The engine suggests you reply with e3, then meet Nc6 with d4. This leads to a fairly standard-looking centre where you have a pawn on d4 and Black has pawns on c5 and d5. You are slightly worse, but the position is solid. Finish development with Be2, castle, and look to challenge Black's centre later with c4 or by playing on the queenside.
How many games feature the Zukertort Opening: The Potato?
Over 19K Lichess games have reached the Zukertort Opening: The Potato position. White wins 44.7%, Black wins 51.2%, with 4.1% draws — based on real rated games.