ARC-style Puzzle Editor
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💡 Hints
Quick Tips
Number Keys (0-9):
Press any number key to quickly select a color from the palette
Left-Click & Drag:
Click and drag your mouse to paint multiple cells at once
Right-Click:
Flood fill a connected region with the selected color
Ctrl+Left-Click:
Replace all instances of the clicked color in the current grid with the selected color
Ctrl+Right-Click:
Replace all instances of the clicked color in all grids with the selected color
Toggle:
Click a cell with the same color to reset it to black (0)
Auto-Save:
Your work is automatically saved to your browser and will persist between page refreshes
Default Grid Width:
Default Grid Height:
Number of Examples:
Show Test Output:
Reset All Grids
Import/Export
Download Puzzle (JSON)
Upload Puzzle (JSON)
Download Puzzle (PNG)
Download Answer (PNG)
Color Palette
Examples
Test Case