Sokoban is the crate-pushing puzzle that has ended more planning sessions than any spreadsheet: push every crate onto a goal square, and remember you can push but never pull.
Checking your browser…
Something not working? See troubleshooting.
96 levels, honestly graded
The pack has 24 levels each at EASY, MEDIUM, HARD, and EXPERT, and every level carries a par: the fewest pushes that can solve it. EASY levels par around 4 pushes; EXPERT levels par around 24 and interlock like a watch.
Chasing par
Par is shown live while you play, and finishing rates your solution OPTIMAL, GREAT, or GOOD. The level-select grid remembers you: gray for unsolved, green for solved, gold for solved at par. Turning the whole grid gold is a long-term project, and the calculator saves your best push count per level.
Controls
Arrows move and push. ENTER undoes as many moves as you need, DEL restarts the level, CLEAR backs out. Unlimited undo means a wrong push is a lesson, not a restart.