Chessy
Playing the Nimzowitsch Defense: Williams Variation: Bc4 as Black
The Nimzowitsch Defense is a hypermodern reply to 1.e4 that can catch opponents off guard. In this Williams Variation with Bc4, after 1.e4 Nc6 2.Nf3 d6 3.Bc4 Nf6, the position looks normal enough — White has space, they've developed naturally, and you've already played ...Nc6 and ...d6. But beneath the calm surface, statistics reveal something exciting for Black: White's most common responses here are actually inaccuracies or mistakes. The engine rates this +0.50, a small edge for White, meaning you are slightly worse — but with accurate play you can equalise or even turn the tables. Below the drill, you'll learn which White moves to hope for and how to punish them.
Play the Nimzowitsch Defense: Williams Variation: Bc4 against the engine
Free, no signup — you play black, the engine adapts to your level.
Try the interactive drill below and practise punishing White's most common mistakes in the Nimzowitsch Defense: Williams Variation. Create a free account to see
Create a free account →What Black Is Fighting For
In the Nimzowitsch Defense, you're challenging White's central dominance from the very first move. With 1...Nc6 you attack the e4 pawn and avoid a transposition into standard 1.e4 e5 openings. After 2.Nf3 d6, you prepare to develop the kingside while keeping the centre flexible. The move 3.Bc4 by White is aggressive — they aim at your f7 square — but it leaves the d4 square under-defended. Your knight on f6 already eyes e4, and you have ...Bg4 ideas coming up. What you're really fighting for is the dark squares: if White doesn't play accurately, you'll get ...e5 in followed by a solid pawn chain, with your light-squared bishop either pinning the knight on f3 or trading itself off.
The Critical Moment: White's First Move After 3...Nf6
This is the crossroads of the variation. White has several options, and the statistics across 114,155 games are revealing. The most popular move is d3 (32,398 games), but here's the crucial fact: d3 is an inaccuracy that loses about half a pawn. It may look like a safe, quiet developing move, but it gives you time to organise your counterplay. The engine's best move is Nc3 (26,257 games), continuing with Nc3 Bg4 d4 e5 — a sharp line where White fights for the centre. Interestingly, the second most popular move, Ng5 (29,529 games), is actually a mistake that loses around a full pawn. And O-O (9,986 games) is also an inaccuracy. So statistically, the moves White plays most often are not the best — that's great news for you as Black.
How to Punish White's Inaccuracies
If White plays d3, you can take a breath. This passive move doesn't pressure you at all. The engine prefers Nc3, which would fight for the centre. With d3 on the board instead, you can aim for ...e5 next, establishing a solid pawn duo on d6 and e5, or look for ...Bg4 to pin the knight and double White's pawns if they capture. The statistics show White scores only 50.2% from d3 — nearly equal results. Even better, if White tries Ng5, attacking the f7 square, this is a real mistake. You can reply with ...d5 (attacking the bishop on c4 and the knight on g5 simultaneously) or ...h6 (kicking the knight). White's score after Ng5 drops to just 49.3% — you win more often than your opponent from that position. If White plays O-O, scoring only 48.3%, you can prepare ...Bg4 with ...e5 ideas, enjoying a comfortable game.
The Engine's Continuation and What It Means
The engine's top choice for White is Nc3, leading to Nc3 Bg4 d4 e5. This is the principled line: White occupies the centre with d4, and you respond with ...e5, creating a pawn tension. At that point you've achieved a solid structure and the game becomes a contest over the d4 and e5 squares. Even in this best-case scenario for White, they score only 50.5% — a negligible advantage in practice. The evaluation of +0.50 (a small edge for White) means you are slightly worse objectively, but at amateur level this is fully playable and often leads to rich, imbalanced positions where your counterplay is real. Remember: across all 114,155 games in this position, Black wins 46.8% of the time — almost as often as White's 49.5%. That's an excellent practical result for a fighting opening.
Results across 114,155 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| d3 | 32,398 | 50.2% |
| Ng5 | 29,529 | 49.3% |
| Nc3 | 26,257 | 50.5% |
| O-O | 9,986 | 48.3% |
| d4 | 6,633 | 48.7% |
| c3 | 3,573 | 48.7% |
Frequently asked questions
Is the Nimzowitsch Defense: Williams Variation with Bc4 good for Black?
The engine gives it +0.50, meaning White holds a small edge with best play. But in practice, Black wins 46.8% of games — nearly half. Since White's most popular moves (d3, Ng5, O-O) are all inaccuracies or mistakes, you have excellent practical chances to outplay your opponent.
What is the best White move after 1.e4 Nc6 2.Nf3 d6 3.Bc4 Nf6?
The engine's top choice is Nc3, leading to Nc3 Bg4 d4 e5. This is the most principled line, fighting for the centre with d4. However, White scores only 50.5% from Nc3 — barely a majority — so even the 'best' move doesn't give White much.
Why is Ng5 a mistake for White in this position?
Ng5 attacks f7 but neglects development and the centre. The engine says it loses about one pawn in evaluation compared to the best move Nc3. In practice, White scores just 49.3% after Ng5 — you as Black actually win more often than your opponent from here.
How should Black respond to White playing d3?
d3 is an inaccuracy that gives you time. You can aim for ...e5 to solidify your centre, or play ...Bg4 to pin the knight on f3. White scores only 50.2% from d3, so you have every chance to equalise or outplay them in the middlegame.