The Map
12 lines. 50 stations. 500 stops.
Every one of the 500 problems is a stop on exactly one station, and every station is one code shape you memorize once. Click a line to zoom in, a station to read it, a stop to see what changes. Lines 1 and 2 are open.
Keyboard: arrows move between stations, Enter opens, Escape goes back one level. Links to any station (
#P09) or stop (#pm67) open it directly.
What exactly do I memorize? →
All 50 stations, by line
The same network as a list. Each link opens the station on the map above.
Unlock all 12 lines, 50 stations, 500 stops.
Every station animated and line-synced in four languages, every stop with canonical + baseline solutions, tests, video, tutor and review queue. $19.99 a year, cancel anytime.