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Battleship Sudoku

Battleship Sudoku

Two games in one: Battleship and Sudoku. There are fewer Sudoku clues and added Battleship clues. Use both sources to solve both objectives. The battleships in the fleet are either horizontal or vertical and are totally non-adjacent to each other. The border numbers show the number of cells in a row or column that are contained on one or more battleships.

This variant stems from the 2007 Sudoku Championship Puzzle Instruction Book (in pdf format)