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How to Play the Polish Opening: King's Indian Variation as Black
After 1.b4 Nf6 2.Bb2 g6, you reach a flexible, slightly unusual opening where Black is ready to develop smoothly and challenge White’s queenside idea. The position is completely playable, but the first choices matter. In the drill below, you will learn what the engine wants here, which reply is most common, and why one aggressive pawn push can go wrong. Focus on calm development, king safety, and meeting White’s setup without drifting.
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Create a free account →A calm start to an unusual opening
This position is not about grabbing quick tactics. It is about developing sensibly and keeping the game under control while White has started with an offbeat first move. Your pieces are aiming for natural squares, and your kingside fianchetto is part of a very normal plan. The opening is best treated as a practical fight for good development rather than a race to attack. If you stay organised here, you will usually reach a playable middlegame with no structural problems.
What the engine wants you to do
The engine’s best move here is Nf3, continuing Nf3 Bg7 a4 a6. That tells you the main strategic story: develop first, then complete your kingside setup, and only then worry about bigger plans. For Black, the move order is about staying flexible and not rushing. If you keep your pieces active and your king safe, you are following the most reliable path in this position.
What the numbers say about the position
Stockfish rates this +0.04, a tiny edge for White. That means you are essentially equal here, and you should not feel that Black is worse out of the opening. The database also supports that picture: across 532,395 games, White wins 46.0%, draws 4.4%, and Black wins 49.6%. Those results show that this position is very playable for Black if you handle the early moves sensibly.
The move to watch out for
The most important practical warning is g4, which is listed as an inaccuracy and loses about 0.8 pawns compared with Nf3. That is a clear sign that advancing the kingside pawns too early can hand White a better position. Instead of chasing space recklessly, keep to steady development and make White prove an attack. In this opening, patience is usually worth more than ambition.
Common replies you should know
White’s most-played continuations from here are e3 (128,703 games, White scores 46.3%), g4 (62,408 games, White scores 48.4%), Nf3 (60,414 games, White scores 46.4%), e4 (57,268 games, White scores 43.9%), c4 (56,092 games, White scores 47.2%), and b5 (52,854 games, White scores 47.5%). The big lesson is that White has several ways to continue, so Black should avoid guessing and instead rely on solid development. The drill will help you recognise these plans and answer them with confidence.
Results across 532,395 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| e3 | 128,703 | 46.3% |
| g4 | 62,408 | 48.4% |
| Nf3 | 60,414 | 46.4% |
| e4 | 57,268 | 43.9% |
| c4 | 56,092 | 47.2% |
| b5 | 52,854 | 47.5% |
Frequently asked questions
Is the Polish Opening: King's Indian Variation good for Black?
Yes, this line is very playable for Black. The evaluation is **+0.04**, which is a tiny edge for White and means the opening is basically equal. If you develop naturally, you should get a sound game.
What is the main idea for Black in this variation?
Black usually aims for calm development and a kingside fianchetto. The engine’s best move is **Nf3**, continuing **Nf3 Bg7 a4 a6**, which shows the priority is to build a solid position rather than force tactics.
Which move should I be careful about as Black?
Be careful not to overpush with **g4**. It is listed as an inaccuracy and loses about **0.8 pawns** compared with **Nf3**. In this opening, steady development is safer than grabbing space too early.
What do the database results suggest about this position?
The database is very large here: **532,395 games**. Black scores **49.6%**, which is a good practical sign, while the draw rate is only **4.4%**. That makes this a useful opening to learn if you want a playable game as Black.
How many games feature the Polish Opening: King's Indian Variation?
Over 532K Lichess games have reached the Polish Opening: King's Indian Variation position. White wins 46.0%, Black wins 49.6%, with 4.4% draws — based on real rated games.