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Dashboard
About the Puzzle
There are 2339 unique solutions to the classic 6×10 pentomino puzzle when rotations and mirrors are treated as the same. If you count every rotation and mirror separately, there are 9356 arrangements.
How to play
- Drag and drop each of the 12 pentomino pieces onto the 6×10 board.
- Rotate or mirror pieces to make them fit (keyboard or buttons).
- Every cell must be filled (no gaps), and each piece is used exactly once.
- Click “Validate & Submit” to check and record your solution.
- If you discover a brand-new unique solution, you’ll be credited as the first solver.