Medium corridors
Medium is twelve by twelve classic. Wrong branches start to cost real time. The daily board is the same size, but fixed for the UTC date — this page opens a new seed whenever you enter.
You still see every wall. Practice junction memory here before Hard fog. Timed sixty seconds uses this footprint with a clock; Medium has no timer.
Compared with Daily
Daily is one shared twelve for the UTC day. Medium is practice: same room count, your own seed, free to Peek without spoiling the worldwide board. Marks treat Medium and Daily as different board types when you save a clean time.
Controls
Arrows and swipe take a corridor to the next fork. Yellow is your trail, not the solution. Seed chip rebuilds the same walls for a rematch.