Free printable Shikaku worksheets
525 print-ready PDF packs across five difficulty levels — the clue numbers pre-filled, plus a full answer key showing every rectangle tiling. Easy, Medium, and Hard pack 8 puzzles each (4 per page); Expert and Einstein use a larger 2-per-page layout with 4 puzzles per pack. Download and print.
Easy Shikaku
6×6 grids with around ten clues, every rectangle forced outright by its own number. Read it off the clue and draw it.
Medium Shikaku
8×8 grids — a bigger board, and some clues give way only once you spot a cell that just one clue can reach.
Hard Shikaku
The same 8×8 board as medium, asking that question far more often — about a third of the solve rather than a sixth.
Expert Shikaku
10×10 grids — hard’s reasoning on a bigger board, plus clues whose every remaining placement covers one shared cell.
Einstein Shikaku
Expert’s 10×10 board and the deepest step: a placement ruled out because it would strand a cell no clue could reach.
About these worksheets
Each PDF is three pages: two pages of puzzle grids (with the clue numbers in their cells) followed by a full answer key where every rectangle is outlined in thick black over the standard grid. Every puzzle is re-solved by a separate verifier that never reads the stored answer, so each one is confirmed to have exactly one tiling.
Packs are numbered sequentially within each difficulty, and the puzzles run in order: Pack 01 holds the first batch, Pack 02 the next, and so on. Easy has 75 packs, Medium 75 and Hard 75, at 8 puzzles a pack. Expert ships 150 and Einstein 150, at 4 puzzles a pack in the larger two-per-page layout.
If you'd rather solve interactively, play online with hints and step-by-step solutions. Or read the Shikaku rules guide to learn the area-and-factorization mechanics.