2026-10-03 · stage-study
Microban Level 1 — The box that is already home must leave first
A dissection, with board diagrams, of level 1 of Microban, the Sokoban collection released in 2000. Fourteen floor cells and two boxes teach one lesson: a box already on its goal must leave it first. Two of the four possible first pushes are instantly fatal, and 41 of the 55 reachable box arrangements are dead. The unique 33-move, 8-push solution and all three kinds of deadlock, in full.
