Réti Opening: Advance Variation, Navara Gambit – Playing as Black

ECO A09 134 games Stockfish +0.35

The Réti Opening: Advance Variation, Navara Gambit (1.Nf3 d5 2.c4 d4 3.b4 g5) is a sharp, aggressive line where White sacrifices a pawn early to seize control. You, as Black, have already pushed ...g5 to challenge White's knight on f3 and fight for space. The engine rates this position at +0.35, a slight edge for White, so you are slightly worse here — but the statistics tell a more balanced story. Over 134 games, Black actually wins 48.5% of the time against White's 47.8%, with only 3.7% draws. This means accurate play can give you excellent practical chances. Below, you'll learn what the engine recommends, how to handle White's most common replies, and which moves from White you can punish.

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The Engine's First Choice: Qa4+

Stockfish's top move for White in this position is Qa4+. The idea is simple: check the Black king, force a blocking move like ...c6, and then continue developing with g3, preparing to recapture on g4 or support the pawn structure. The full recommended line runs: Qa4+ c6 g3 g4. From your side as Black, after Qa4+ you should play ...c6 — a solid response that blocks the check and keeps the centre closed. Then after g3, pushing ...g4 attacks White's knight on f3 and gains further space on the kingside. Don't panic when White plays Qa4+: it's a natural developing move, and your ...c6 ...g4 plan maintains your pawn wedge on d4 and keeps the game sharp.

The Most Common Trap: Nxg5

By far the most popular move for White in practice is Nxg5 (81 games out of 134), but it's actually an inaccuracy that costs roughly 0.9 pawns. White grabs your g5-pawn, but the knight lands on a vulnerable square. After Nxg5, White's score drops to just 43.2% — meaning you, as Black, are winning more often than not from this point. Take the capture if White offers it, but stay alert: the knight on g5 can be harassed with ...h6 or ...f6, and your d4-pawn remains a powerful central asset. This is the moment where many White players go wrong, and you can punish them if you keep your cool.

Other White Moves You Should Know

Beyond Nxg5 and Qa4+, White has a few other options, but most are inaccurate or poor. e3 (4 games) scores 100% for White — misleadingly — but it's actually an inaccuracy losing about 1.0 pawns; the engine prefers h3 instead. If White plays e3, you can ...f5 or ...Bg7 with confidence, as your centre is solid. d3 (4 games) is equally inaccurate (losing ~0.7 pawns; Qa4+ was better), and White scores just 50% there. Bb2 (30 games) is more respectable, with White scoring 50%, but it doesn't trouble you much — develop naturally with ...Bg7, ...Nc6, and castle kingside. h3 (8 games) is White's best non-engine try, scoring 75%, but even that is rare. The key takeaway: trust the position. You are slightly worse according to the engine, but over the board your practical chances are nearly even.

Your Typical Plan After the Dust Settles

The Navara Gambit leads to a unique pawn structure: Black has a powerful passed pawn on d4, White has extra space on the queenside from b4, and the kingside is semi-open. Your general plan as Black should be: develop quickly (Bg7, Nc6, then castle kingside or queen-side depending on White's setup), keep the d4 pawn protected (support it with ...c6 or ...e5 if possible), and look for breaks like ...f5 or ...e5 to open lines for your bishops. Don't rush to return the pawn — your d4-pawn is a strength, not a weakness. And remember: if White grabbed the g5-pawn with Nxg5, you have excellent compensation and can often outplay them in the middlegame. Stay active, keep pressure, and enjoy the unbalanced fight.

Results across 134 Lichess games

47.8%
3.7%
48.5%
■ White 47.8% ■ Draw 3.7% ■ Black 48.5%
Most-played continuationGamesWhite wins
Nxg58143.2%
Bb23050.0%
h3875.0%
e34100.0%
d3450.0%
g3250.0%

Frequently asked questions

Is the Réti Opening: Advance Variation, Navara Gambit good for Black?

According to the engine, the position favours White slightly (+0.35), so Black is slightly worse in theory. However, practical results show Black winning 48.5% of games — almost equal to White's 47.8%. With accurate play, Black has very good chances, especially if White falls for the trap of playing Nxg5.

What should Black do after 1.Nf3 d5 2.c4 d4 3.b4 g5 in the Navara Gambit?

The position is reached and it's White to move. You should be ready for White's reply. If White plays Qa4+, answer with ...c6. If White plays Nxg5 (the most common move), you have a very playable position — the capture is an inaccuracy that favours you. Develop naturally with ...Bg7 and ...Nc6, and keep your strong pawn on d4.

Why is Nxg5 a mistake for White in the Navara Gambit?

Nxg5 is classified as an inaccuracy that loses roughly 0.9 pawns compared to the best move Qa4+. After Nxg5, White's winning percentage drops to 43.2%, while Black scores over 48%. The knight on g5 can be harassed, and Black's central pawn on d4 remains a powerful asset.

What is the best engine line after 3...g5 in this opening?

The engine's top continuation is Qa4+ c6 g3 g4. White checks on a4, Black blocks with ...c6, White plays g3, and then Black pushes ...g4 to attack the knight. This line keeps the position complex and requires accurate play from both sides.