Chessy
The Basman-Williams Attack: Hacking the Grünfeld with 3.h4
Most opponents who play 1.d4 Nf6 2.c4 g6 expect a quiet Grünfeld or a King's Indian. They are not expecting you to push a rook's pawn on move three. The Basman-Williams Attack (3.h4) is an aggressive, anti-theoretical weapon that immediately asks Black a difficult question: how do you respond to a pawn that wants to storm your kingside? Before we dive into the plans, try the position yourself against the engine below — you are White and it is your move after 1.d4 Nf6 2.c4 g6 3.h4. The engine gives +0.33, a small edge for your side, but the real test is navigating the sharp lines that follow.
Play the Indian Defense: Anti-Grünfeld, Basman-Williams Attack against the engine
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Try the Basman-Williams Attack for yourself in the interactive drill below. Play 3.h4 against the engine and see if you can build a winning kingside attack. The
Create a free account →What You Are Fighting For
The standard Grünfeld setup sees Black fianchetto the bishop on g7 and challenge the centre with ...d5. By playing 3.h4, you are saying: I am not interested in a theoretical grind. Your goal is to create kingside weaknesses before Black can consolidate. If Black plays the most popular reply Bg7, you have the option to push h5 next, threatening to open lines on the h-file. Even if Black stops you with ...h5 themselves (the second-most popular reply), you have already provoked a concession — Black's kingside is less flexible, and the g6-square is harder to defend. The statistics back this up: across over 20,000 games, White scores 49.1% wins compared to Black's 47.6%, a healthy practical edge for a sideline that most opponents have never faced.
The Engine's Recommended Plan
Stockfish's top choice for Black is c5, which leads to a sharp but promising line: c5 d5 d6 Nc3. Notice that Black delays castling and instead strikes in the centre. Your job as White is straightforward: after you meet ...c5 with d5, and ...d6 with Nc3, you have a space advantage and the ability to develop naturally. Your light-squared bishop can go to f4 or g5, and your queen's knight is already on c3 eyeing the d5 pawn. You are not obliged to follow the engine line perfectly — the key takeaway is that Black is often forced into central counterplay rather than their ideal Grünfeld setup. If Black does choose a quieter move like Bg7, you can simply continue with h5 or Nc3, keeping the pressure on.
What the Move Order Statistics Reveal
The most-played move is Bg7, appearing in 13,366 games — nearly two-thirds of all responses. Against this, White scores 48.7%, slightly below the overall average but still respectable. The real surprise comes against e6, which only appears in 138 games but gives White a massive 64.5% score. When Black plays e6, they are effectively ignoring your h-pawn and transposing toward a Hedgehog or French-like structure where your h4 move proves useful for a kingside attack. The ...h5 reply (2,758 games) is Black's most principled try to neutralise your idea, and here White scores exactly 50.0% — dead even. Against ...d5 (1,833 games) White scores 49.6%, a tiny edge. Across the board, no response gives Black an objective advantage, and your practical winning chances hover around the 50% mark regardless of Black's choice.
The Most Common Mistake to Avoid
The most frequent error in this position is misjudging the timing of your kingside push. Beginners often want to throw every pawn forward immediately, but the statistics suggest you should be patient. Black's most dangerous reply, engine-wise, is c5 — the move that immediately challenges your centre. If you react too slowly or get fixated on the kingside, Black can seize the initiative in the centre. Your priority after 3.h4 should be: secure the centre with d5 or Nc3 if Black plays ...c5, then continue your kingside plan. Against the popular Bg7, a simple developing move like Nc3 or Nf3 scores well, and you can follow up with h5 next turn. Do not let the rook pawn become an obsession — it is a tool for creating weaknesses, not your only plan.
Results across 20,053 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Bg7 | 13,366 | 48.7% |
| h5 | 2,758 | 50.0% |
| d5 | 1,833 | 49.6% |
| d6 | 1,242 | 49.8% |
| c5 | 216 | 48.6% |
| e6 | 138 | 64.5% |
Frequently asked questions
Is 3.h4 a good move in the Grünfeld?
Statistically, yes. In over 20,000 games White scores 49.1% wins with only 3.3% draws, and the engine gives a +0.33 edge for White. It is not the main theoretical line, but it is a perfectly sound and aggressive way to avoid heavy preparation.
What if Black plays ...h5 immediately against 3.h4?
This is Black's second-most popular reply (2,758 games) and scores exactly 50.0% for White. Black stops your pawn push but weakens their own kingside structure. You can simply develop normally with Nc3 or Nf3, and the h5 pawn can become a target later.
Should I memorise long lines in the Basman-Williams Attack?
No. The whole point of 3.h4 is to avoid deep theory. The engine's best continuation (c5 d5 d6 Nc3) is only four moves long. Focus on the idea: secure the centre first, then use your space and the h-file to attack. Your opponents will be more lost than you.
What is the difference between the Anti-Grünfeld and the normal Grünfeld?
In the normal Grünfeld (1.d4 Nf6 2.c4 g6 3.Nc3 d5), Black immediately challenges the centre. The Anti-Grünfeld systems, like 3.h4, avoid that direct transposition. By playing 3.h4, you keep the game in sharper, less-theoretical territory where Black's standard Grünfeld knowledge is less useful.
How many games feature the Indian Defense: Anti-Grünfeld, Basman-Williams Attack?
Over 20K Lichess games have reached the Indian Defense: Anti-Grünfeld, Basman-Williams Attack position. White wins 49.1%, Black wins 47.6%, with 3.3% draws — based on real rated games.