Example puzzle

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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.

Battleships

Author: Andrey Bogdanov

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Place the given fleet of ships into the grid so that no two ships are in adjacent squares, not even diagonally. Numbers outside show the number of cells occupied by the ships in the corresponding row or column.

Example puzzle

Grid control: Click the mouse button at the selected cell to change the color of the cell. Second click will paint the cell into auxiliary grey color, which doesn't affect correctness of the solution, but helps visually. You can also drag the content of one cell to another with the mouse. You can also click at the ship in the given set to mark them out. More details about grid control are at the help page.