The King's Knight Opening: Konstantinopolsky d6 (1.e4 e5 2.Nf3 Nc6 3.g3 d6 4.Bg2) steers the game away from heavily analysed theory into a calm but ambitious setup. White fianchettoes the king's bishop, keeping flexible control of the centre while preparing to castle quickly. From this position, Stockfish gives +0.32 — a small but real edge for White. That means you have a slight advantage to work with here. Over nearly a quarter of a million games, White wins 48.7% of the time, with only 4.5% draws, so expect a fighting middlegame. Let's see how you can make the most of this opening.
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Play the King's Knight Opening: Konstantinopolsky: d6 against the engine
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Find your own #1 mistake — free →What You're Fighting For
By playing 3.g3 and 4.Bg2, you delay committing your d-pawn and keep the possibility of a flexible centre. Your light-squared bishop on g2 eyes the centre and the long diagonal, often putting pressure on Black's kingside after you castle. Black's last move, 4...d6, solidifies the e5-pawn but also makes their position somewhat passive. Your main ideas are: get your king to safety with short castling, then decide whether to open the centre with d4 or build up on the kingside. The opening is named after the Russian master Konstantinopolsky, and it suits players who prefer positional chess over sharp tactical battles. You're not trying to deliver checkmate in 15 moves — you're accumulating small advantages.
The Engine's Recommended Plan: f5
Stockfish's top choice at this position isn't a quiet developing move — it's the aggressive 4...f5. Yes, this is Black's best try, not White's! If Black plays 4...f5, the engine suggests you respond with 5.exf5, then after 5...Be7 you continue with 6.c3. This line shows that Black is already trying to counterpunch in the centre. Your job is straightforward: take the pawn on f5, develop naturally, and trust that the extra pawn and your bishop pair give you a comfortable game. If Black doesn't play f5, you'll have an even easier time — their other options are more passive and let you build up at your own pace.
What the Statistics Tell Us
With 243,766 games in the database, we have a very reliable picture of this position. The most popular Black replies and how you fare as White are: - Bg4 (102,973 games, the overwhelming favourite): White scores 48.4% — nearly equal, so no need to fear the pin. Simply continue developing with 0-0 or h3. - Nf6 (64,943 games): White scores 48.5%, again a balanced fight. You can castle and prepare d4. - Be6 (18,121 games): White scores 49.6%, your best percentage against any common reply. Black's bishop blocks their own e-pawn; you can consider d4 immediately. - f5 (14,661 games): The engine's top choice, but White still scores 48.1%. Take on f5 and play c3 as noted. - Be7 (9,266 games): White scores 47.1%, the lowest of the bunch. Still perfectly playable — just develop. - Bd7 (8,018 games): White scores a solid 49.0%. A modest move that doesn't challenge you at all. Overall, no Black move gives you a crushing statistical advantage, but none refutes your setup either. You're in a real game from move 4.
Common Mistakes to Avoid
. Because the Konstantinopolsky is a quiet opening, the biggest danger is becoming too passive yourself. If you play only defensive moves, Black can equalise easily. The engine's suggestion of c3 after f5 exf5 Be7 shows a concrete idea: support a future d4 break. Don't rush with d4 before you're ready — Black might be able to exploit the opened centre. Another pitfall: forgetting that your g3-bishop is powerful. Keep the long diagonal open; don't block it unnecessarily with your own pawns or knight. If Black pins your knight with Bg4, consider h3 to ask the bishop what it wants, or simply castle first and wait. Patience with a purpose is the key.
Results across 243,766 Lichess games
| Most-played continuation | Games | White wins | |
|---|---|---|---|
| 1 | Bg4Main line | 102,973 | 48.4% |
| 2 | Nf6 | 64,943 | 48.5% |
| 3 | Be6 | 18,121 | 49.6% |
| 4 | f5 | 14,661 | 48.1% |
| 5 | Be7 | 9,266 | 47.1% |
| 6 | Bd7 | 8,018 | 49.0% |
Frequently asked questions
Is the King's Knight Opening: Konstantinopolsky d6 good for White?
Yes, it's a perfectly sound opening. Stockfish evaluates the position at +0.32, a small edge for White, meaning you are slightly better after the first four moves. White wins 48.7% of games at this position, with Black winning 46.8%.
What is Black's best move after 4.Bg2 in the Konstantinopolsky d6?
The engine recommends 4...f5 as Black's strongest reply, aiming to strike in the centre immediately. In that case you should capture 5.exf5, then after 5...Be7 continue with 6.c3 to support a later d4 break.
How should White respond to Bg4 in this opening?
Bg4 is Black's most popular move, seen in over 100,000 games. White scores 48.4% against it, a perfectly healthy result. You can simply castle, or play h3 to ask the bishop's intentions. Stick to natural development and you'll be fine.
Why are there so few draws in the Konstantinopolsky d6?
Only 4.5% of games end in a draw from this position — an unusually low number. This opening tends to produce unbalanced, fighting positions where both sides have clear plans. You'll rarely get a boring quick draw.