Battleship Sudoku 

Instructions

The Aim of the Game

 
There are ten Battleships hidden in a ten by ten grid of one hundred squares.
 
 
 
 
At the end of each row and column is a number that tells you how many squares in that row or column is occupied.
 
Each ship is always separated from any nearby ships by at least one square of water.
 
Your task is find where the Battleships they are through logical deduction.

Controls



To set a square on the grid, click on a shape from the menu in the corner of the screen.  The square on the menu will be highlighted, and then you can click on the grid to set the squares to that shape.

Choose the white square when you don't know what shape a grid cell contains.

Click on the empty water at the top of the menu to choose Water.

When you have successfully identified all of the Battleships, you have won the game.

The ship counter tells you how many ships are still to be found, and how long they are.

From the example, you can see that there is only one singlular (round) ship to be found.  There are three two-square-long ships and two three-square ships.  The longest ship is four squares in length, and that is still to be found as well.

Hints

Start a new game by eliminating all grid cells on lines that are entirely unoccupied. Then have a think about the shapes that are revealed right at the start. It's surprising how many further grid cells you can eliminate.
 
The longest battleship is four squares in length. Clearly only a line on the grid with four or more occupied squares can contain the longest battleship. So look at the grid carefully - There may be only one place that the longest battleship can go.
 
If you're stuck, go back and look carefully at the number at the end of each line, and think about what you can deduce about each grid cell on that line. If you know that a square is occupied, this can help you solve the puzzle, even if you don't know exactly what shape it is occupied with.
 
Don't be temped to fill in a grid cell unless you have conclusively proved which shape goes there. In Sudoku Battleships it is never necessary to just guess which shape goes where, although you may need to think about different possibilities until you have eliminated the ones that just can't work.
 
Finally, don't be afraid to restart a game if things go wrong, or you feel the need to clear your mind. Or come back to later with a fresh perspective
 

If you enjoy Battleship Sudoku, why not visit www.darkchrome.com where you can download Battleship Sudoku for your Windows or Pocket PC.

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