London System

Play as White • Repeat until it's automatic

Mason Attack

An early Bf4 is followed by f3, preparing a broad pawn centre with e4. The Mason Attack transforms the London into a more aggressive Stonewall-like structure, giving White attacking prospects on the kingside while maintaining solid central control.

LinesPractice Mode

You (White)

Your move - play White's next move

ProgressMove 1 of 6

Move Sequence

1.d4d5

2.Bf4Nf6

3.e3c5

4.c3Nc6

5.f3e6

6.Ne2

Current lineMason Attack

🔄

Reps

🔥

Streak

0/3

Learned

Earn a tick by completing the line without a mistake. 3 ticks = learned.