Pick your piece
Choose A–L from the tray. The shape and letter help you match your physical piece, even when colors look similar.
A LITTLE SPACE TO PUZZLE
One board. Twelve pieces. A little help when you need it.
No rush. Every move can be undone.
SMALL MOVES, SATISFYING FITS
Recreate your classic 2D puzzle, or start with an empty board and see where it takes you.
Choose A–L from the tray. The shape and letter help you match your physical piece, even when colors look similar.
Rotate or flip, then tap a board cell to set the top-left corner of its bounding box. Use the arrows for precision and press Place piece.
Check if your layout can be completed, add just one piece with Hint, or reveal one full solution. Every placed piece stays where it is.
MADE FOR A QUICK BRAIN BREAK
Puzzles are solved on your device. No accounts, photos, or paid AI service.
A hint places one piece from a valid completion, keeping your existing layout.
Undo, redo, and auto-save let you pick up an unfinished puzzle later.
A board link holds the pieces and pinned clues. The recipient can continue from there.
YOUR PUZZLE, YOUR PACE
Match a classic physical board when you need a second look. Take a screen-sized break with an original challenge. Or share a setup with a friend and compare your approaches.
Supports the classic EI-2978 5×11 rectangle and its A–L pieces. Check the shapes in the tray against your set. Other editions and 3D pyramids use different rules and are not supported.
A FEW GOOD QUESTIONS
The classic EI-2978 2D game: 55 positions arranged in 5 rows and 11 columns, with the 12 A–L shapes shown above. It does not support Genius, Extreme, Ultimate Champion, other variants, or 3D pyramids.
Yes. Flat pieces can turn in quarter turns and turn over. Symmetric pieces may look unchanged. The solver checks distinct valid orientations without changing the shape.
No. Hint searches for a complete arrangement that preserves every current piece, then places one remaining piece. Generated challenge clues are pinned. A hint is one possible next step, not a claim that it is the only move.
Only a completed search can prove that your current layout cannot be filled with the remaining pieces. A search stops after 8 seconds or 600,000 search nodes. If it reaches a limit or you cancel, the result is inconclusive and the board stays unchanged.
No. The generator builds a complete arrangement locally, verifies that all 55 cells are covered exactly once, then removes pieces to create a playable setup. We do not reproduce official puzzles or guarantee a unique solution. The number of pieces left is a choice of puzzle size, not a measured difficulty rating.
The board and letter preference are saved in your browser's local storage when available. A share link encodes the board after the # in the address. Puzzle data is not sent to a solver service. Anyone with that link can read the puzzle. Clear saved data on the privacy page.