London System
1.d4 · you play white
5 chapters, 8 moves deep, get you to 92% of what you will actually meet. The other 1 covers the last 3%.
Course progress
0 of 181 decisions
0 still learning · 181 not asked yet
1 more chapter is below the depth for your level, together 3% of what you meet.
Drill this opening
Any chapter or study, asked cold — whether or not you owe it. Nothing here is unlocked by anything else.
At your level
Level
Improving
Depth
16 plies of this opening
Chapters
5
Decisions
181
0/181
Your moves are chosen by the engine and checked against 3,439,091 games (Lichess Elite (2500+ vs 2300+), 2024-12 → 2025-11); their replies are what people actually play. Evaluations from Lichess Stockfish evaluations (database.lichess.org) (CC0 1.0 Universal), covering 75% of this course.