How to play Pack: packing puzzle tips and strategy
Pack hands you a tray with a few dark islands and a rack of bendy pieces. Fill every empty square with no gaps and no overlaps. These tips get you from guessing to solving.
The rules in 30 seconds
Drag pieces into the tray; they snap when they fit. Tap a piece to turn it 90°. Pieces never flip: an L will never become a J. Dark squares are islands and stay empty. Fill every other square to win. Each hint places one correct piece and costs a star.
Start with the most constrained squares
Look for squares with the fewest ways to be filled: corners, dead ends (a square with three blocked sides) and the gaps next to islands. A dead-end square can only be filled by the end of a piece, which often tells you exactly which piece goes there.
Count, then commit
Before placing, count the squares in the region you are filling. If a corridor is four squares long and closed at both ends, only a four-square piece (or pieces adding up to four) can go there. Regions that cannot be split evenly into the remaining pieces mean an earlier placement was wrong.
Remember: turns yes, flips no
Most stuck moments come from a piece that looks right but is the mirror image of what you need. Try turning each candidate all four ways before ruling it out. If none of the four turns fits, that piece belongs somewhere else.
Leave the easy pieces for last
Straight pieces are the most flexible, so they make the best finishers. Place awkward, twisty pieces early while there is still room to fit them, and keep the straight ones to plug the last gaps.
Questions people ask
Can I flip pieces in Pack?
No. Pieces turn in 90° steps by tapping them, but they never flip over. That rule is what makes the trays tricky.
Does every tray have a solution?
Yes. Each tray is made by cutting a filled tray into pieces, and a solver checks it so that, as far as possible, there is only one way to pack it.
Is there more than one puzzle a day?
There are four daily trays (Easy, Medium, Hard and a bonus Master), plus endless mode, a 120-level pack and community trays.
Can I play with a keyboard?
Yes. Tab to a piece, Enter to pick it up, the arrow keys to move, R to rotate, and Enter to drop.
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