On This Day July 6

On July 6, 1895, La France created a puzzle that was close to a modern Sudoku. Its instructions read, "Use the numbers 1 to 9 each nine times to complete the grid in such a way that the horizontal, vertical, and two main diagonal lines all add up to the same total." These number puzzles were a feature of French dailies and magazines for a couple of decades, but disappeared about the time of World War I. The modern Sudoku puzzle was invented in Indianapolis, USA in 1979.

From La France newspaper, July 6, 1895

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