2026-09-19 · stage-study
Sokoban, Level 1 — A one-wide corridor carries one box at a time
Level 1 of the “Original” Sokoban set (1982), dissected with board diagrams. Push but never pull, corners kill, side by side freezes, a one-wide corridor takes one box at a time. The traps in the very first push and the full 230-move solution of a level that teaches four rules without a word of text.
