How to Play
Draw rectangles. Match the numbers. Fill the grid.
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The Rules
- 1Each number on the grid is a clue.
- 2The number tells you the area of its rectangle — the count of cells it must cover.
- 3Drag across the grid to draw a rectangle.
- 4Each rectangle must contain exactly one number.
- 5The rectangle's area must equal that number.
- 6Fill the entire grid with non-overlapping rectangles to solve the puzzle.
- 7Double-click or double-tap a filled rectangle to remove it.
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Examples
A few quick examples of how rectangles work.
Numbers show area
A 6 can be a 1×6, 2×3, 3×2, or 6×1 rectangle. Here it fills a 3×2 shape — 6 cells total.
6
One clue per rectangle
Each rectangle must contain exactly one number.
Valid
One number inside — valid.
4
Invalid
Two numbers inside — invalid.
3
1
Fill every cell
The puzzle is solved when every cell belongs to a valid rectangle. This 4×4 board is fully covered — five differently-sized rectangles, each containing exactly one clue.
4
4
3
2
3
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Controls
DragClick and drag across cells to draw a rectangle.
Double-click / tapRemove a filled rectangle from the grid.
UndoReverse your last placed or removed rectangle.
ClearRemove all rectangles you have placed so far.
RestartReset the puzzle completely back to its starting state.
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Daily Results
- Gridlock has daily puzzles for Easy, Medium, and Hard.
- Your first solve for each daily puzzle is saved as your official result.
- Replaying a completed puzzle does not change your official time or move count.
- The Calendar tracks your progress — three dots on a day mean all three difficulties solved.
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Daily Sweep
Complete Easy, Medium, and Hard on the same day to earn a Daily Sweep. Your Calendar will show three filled dots for that date.
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Difficulties
Easy · Medium · Hard
Ready to play?
Start with Easy, then complete Medium and Hard for a Daily Sweep.