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.


Author: Andrey Bogdanov

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Fill in the grid with digits 1, 2, 3, 4 putting one digit per a cell. Two cells connected by the move of a chess knight cannot contain the same digit. Three identical digits cannot appear in consecutive cells horizontally, vertically or diagonally.

Example puzzle

Grid control: Click at a cell reveals the value chooser. Click at the selected value changes the state of the cell. More details about grid control are at the help page.