Example puzzle

This is an example puzzle. You can solve it the same way as you would solve competition puzzle, but result never stored. You can reveal an answer for the puzzle by clicking "Show answer" link.

Perfect Square Sudoku

Author: Andrey Bogdanov

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Fill in the grid with digits from 1 to N putting one digit per a cell. Each row, column and outlined area should contain every digit exactly once. Dots show all two-digit perfect square numbers reading from top to bottom or from left to right. Perfect squares numbers are 16, 25, 36, 49, 64, 81.

Example puzzle

Grid control: Click the mouse button at the selected cell to change the filling of the cell. More details about grid control are at the help page.