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Shikaku

Einstein

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Play Einstein Shikaku — ThePuzzleLabs

Try this Einstein Shikaku puzzle on ThePuzzleLabs.

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Classic

Click a corner cell, then click another to draw a rectangle. Click a rectangle to remove it.

Solve This Puzzle?

This will fill in the complete solution. The puzzle will be marked as “solved with reveal” rather than self-solved.

Einstein Shikaku — what to expect

Einstein Shikaku is 15×15 — 225 cells with the widest factorization ambiguity. A clue of 30 could be 1×30, 2×15, 3×10, 5×6, or their rotations. Every puzzle is verified solvable through logic alone. Finding the path requires working through long constraint chains, but no guessing.

Rules & Strategy →Printable Puzzles →All Difficulties →