Chess Opening Theory/1. e4/1...e6/2. d4/2...d5/3. Nc3/3...Bb4/4. e5/4...c5/5. a3/5...Bxc3/6. bxc3/6...Ne7/7. Qg4/7...O-O

French defence, Warsaw variation
	a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
	Position in Forsyth-Edwards Notation (FEN) rnbq1rk1/pp2nppp/4p3/2ppP3/3P2Q1/P1P5/2P2PPP/R1B1KBNR
	Moves: 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3 6. bxc3 Ne7 7. Qg4 O-O
	ECO code: C18
	Parent: Winawer variation

7...O-O · Warsaw variation

Although castling to the side where White wants to attack seems to be dangerous for Black, there are no immediate mating threats - at least as long as White's queen is attacking Black's kingside on her own and without support from other pieces. That's why White usually decides to develop some additional pieces which may help with White's kingside attack. Typically this is done by playing 8. Nf3 or 8. Bd3, on rare occasions 8. h4 has also been tried. Note that 8. Bh6 is harmless for Black, who can defend against 9. Qxg7# by playing 8...Nf5 or 8...Ng6, in both cases White's dark-squared bishop must retreat and White wasted a tempo.