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Sudoku (Battleships) (1233)
Instruction:
Locate the indicated fleet of ships in the grid. Ships may be rotated before being placed in the grid. Each piece of a ship occupies a single cell. A cell that does not contain a ship piece is considered "sea". Ships do not touch each other, not even diagonally (that is, if two ship pieces are in cells that share an edge or a corner, they must be part of the same ship). The contents of some cells are given for you (wavy lines indicate "sea").
Each number to the top or left of the grid reveals the number of ship pieces that must be located in that row or column (including any that might be given for you).
Also place digits from 1-6 into all cells without digits such that each row, column and marked 2×3 box contains each digit exactly once. (Ignore the numbers outside the grid for this purpose.) The indicated fleet of ships may have digits on ship pieces; these digits must match the digits placed in the grid for the corresponding ships.