Title: Sudoku for the iPhone and iPad

Area: iPhone OS application development

Written in Objective-C

(Documentation and source code attached)

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 sub-grids that compose the grid (also called ”boxes”, ”blocks”, ”regions”, or ”sub-squares”) contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which typically has a unique solution. [Wikipedia]. Works on the iPhone and the iPad platform.

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