Chessy
Facing the Pirc: Classical System with ...c6
After 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 c6, you've just played 5.Bd3 — the Classical System. Black is about to fianchetto, but their early ...c6 has committed them to a slower setup. The engine rates your position +0.58, a small edge for you as White. Across over 46,000 games from this exact spot, White wins 48.6% of the time — nearly half, with another 4.3% draws. That's a healthy practical score. In the drill below you'll face Black's most popular replies and learn to turn your slight space advantage into a lasting initiative.
Play the Pirc: Classical System: c6 against the engine
Free, no signup — you play white, the engine adapts to your level.
Try the interactive drill below — face Black's most common replies and practise turning your +0.58 edge into a full point.
Create a free account →What You're Fighting For
The Pirc is a hypermodern defence: Black lets you seize the centre with pawns on e4 and d4, then plans to chip away at it with ...g6, ...Bg7, and later ...c5 or ...e5. By playing ...c6 early (instead of the more common ...Bg7), Black has slightly mis-timed their break. That pawn on c6 helps them defend d5, but it also takes away the c6-square from their knight. Your job as White is straightforward: finish development, castle, and prepare to meet Black's central break when it comes. You have more space and easier piece activity. The statistics show that White scores well here, so trust your classical development.
The Engine's First Choice: 5...Bg7
Black's most common move, played in nearly 37,000 of the 46,431 games, is 5...Bg7 — finishing the fianchetto. The engine's best continuation after that is: 6.0-0 Bg4 7.h3. White castles immediately, then asks the bishop on g4 what it wants to do. If Black retreats (7...Bd7 or 7...Be6), you continue with Re1, Be3, and a possible queenside expansion. If Black trades on f3, you recapture with the queen and enjoy the bishop pair. The key point: you haven't committed to a big attack yet — just solid, classical play that slowly builds pressure.
How to Handle the Tricky 5...Bg4
Black's second-most-popular reply is 5...Bg4, pinning your knight on f3. This is played about 4,300 times and scores slightly worse for Black (White wins 46.7%). Your simplest reaction: 6.h3, forcing Black to decide. If 6...Bxf3, you recapture with the queen (7.Qxf3), keeping your pawn structure intact and developing with tempo. If Black retreats (6...Bd7 or 6...Be6), you've gained a tempo and can continue with 0-0, Re1, and Be3 — the same classical scheme. Don't fear the pin; it's an empty threat when you can kick the bishop away.
The Mistake You Should Punish
Among the most-played replies, one move stands out as a clear error: 5...b5. This has been tried nearly 1,600 times, but the engine calls it an inaccuracy that loses about 0.8 pawns. Black's idea is ...b5-b4 to displace your knight on c3, but it weakens the queenside and neglects development. Your correct response: continue with normal moves — 6.0-0 Bg7 (or 6...b4? 7.Na4) — and enjoy your extra tempo and superior centre. White scores 48.7% against 5...b5, but the engine evaluation says you should be doing even better. Keep it simple: develop, castle, and Black's premature pawn push will leave them behind.
Results across 46,431 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Bg7 | 36,831 | 48.6% |
| Bg4 | 4,319 | 46.7% |
| b5 | 1,595 | 48.7% |
| Nbd7 | 1,262 | 49.2% |
| Qa5 | 983 | 49.8% |
| Qb6 | 378 | 48.1% |
Frequently asked questions
Is the Pirc: Classical System with c6 good for White?
Yes. The engine gives White a +0.58 advantage — a small but clear edge. In practice White wins 48.6% of games from this position, with another 4.3% draws. Just develop naturally and you'll keep the pressure.
What is Black's best move after 5.Bd3 in the Pirc?
The engine recommends 5...Bg7, and it's also the most common choice, played in nearly 37,000 games. Black fianchettoes and prepares to challenge your centre later with ...c5 or ...e5.
How should White respond to 5...Bg4 in the Pirc?
Play 6.h3! This forces Black's bishop to declare its intentions. If it captures on f3, you recapture with the queen and get the bishop pair. If it retreats, you've gained a useful tempo. Both outcomes are good for White.
Why is 5...b5 a mistake in this Pirc line?
Because it weakens the queenside and wastes time. The engine says it loses about 0.8 pawns compared to 5...Bg7. White should simply castle and develop — Black's pawn push to b4 can be answered by moving the knight to a4, leaving Black lagging in development.