★★★ Three stars
Solve within a few moves of the best possible solution (the best score plus 3 moves or 30%, whichever is more).
Learn the rules in a minute
How to Play
Slide the wooden blocks, clear a path and guide the big red lock block out through the exit at the bottom of the tray.
The goal
Free the lock block
The board is a wooden tray of 4 columns and 5 rows. The big red 2×2 block is the lock block. Move the other blocks out of its way until it can slide down and out through the exit at the bottom.
Blocks can't be lifted, rotated or jump over each other — they only slide into empty space.
Step by step
Your first puzzle
Drag a block
Touch any block and drag it up, down, left or right. It slides in a straight line into free space and snaps into place.
Count your moves
One move = one block slid in one straight line, however far it goes. The move counter at the top shows your total.
Make room for the lock block
Shuffle the smaller blocks around to open a 2-cell-wide path below the red block.
Slide it out
When the red block reaches the exit at the bottom centre, it slides out of the tray — puzzle solved!
Collect stars and coins
You earn 1 to 3 stars depending on how close you were to the fewest possible moves, plus coins for new levels.
Scoring
How stars work
Every level shows the best possible number of moves. The closer you get, the more stars you earn.
★★ Two stars
Solve a little further from the best (the best score plus 8 moves or 80%, whichever is more).
★ One star
Solve the puzzle in any number of moves. You can always replay a level to improve your stars.
During play, the line under the scoreboard tells you how many moves you have left for 3 or 2 stars.
Difficulty
From Beginner to Expert
Each pack of 200 levels grows steadily harder. Solve a level to unlock the next one; Pack 2 (Master) opens after level 200 and Pack 3 (Tall Timber, with tall 1×3 logs) after level 400.
| Levels (in each pack) | Difficulty | What to expect |
|---|---|---|
| 1 – 25 | Beginner | A few moves — learn how blocks slide |
| 26 – 60 | Easy | Short puzzles that need a little planning |
| 61 – 100 | Medium | Several blocks must move in the right order |
| 101 – 150 | Hard | Long solutions and clever detours |
| 151 – 180 | Very Hard | Deep puzzles for experienced players |
| 181 – 200 | Expert | The toughest boards — true masters only |
Game modes
Mode rules
Zen
No timer and no stars. Solve relaxed puzzles at your own pace and earn a few coins for each one.
Move Master
Each challenge shows a move limit. Undo is turned off. Use all your moves without solving and you can try again.
Time Attack
Start with 2 minutes. Solve short puzzles one after another — every solve adds 10 seconds. When time runs out, your score is the number of puzzles solved.
Daily Puzzle
One special puzzle per day, the same for everyone. Missed a day? Play it later from the calendar (last 30 days) for a few coins.
Weekly Event
Seven puzzles per week (Monday to Sunday). Each first solve pays coins, all seven pay a bonus, and 3 stars on all seven unlock the Champion board.
Memory
The board is shown for 3.5 seconds, then the blocks fade — only the lock block stays visible. A block shows while you drag it, and you can peek twice.
Workshop
Place blocks on an empty tray; the solver checks your puzzle can be solved and counts the fewest moves. Save it, play it, share its code.
Tips
Think like a master
Work backwards
Look at the exit and ask: which blocks must leave that space first? Plan the last moves, then find the first ones.
Keep space together
Two empty cells side by side are more useful than two separated ones. Try to keep the gaps next to each other.
Use undo wisely
You get free undos in every attempt. Undo a few moves when you notice you've blocked the path.
Replay for 3 stars
Solved it? Replay the level with what you learned — the second try is often much shorter.
Rewind to best
Took a wrong turn? In the pause menu, Rewind to best takes you back to the last point from which 3 stars are still possible.
Keep the streak
Win levels with 3 stars in a row for streak bonuses at 3, 5 and 10 wins.