9×9 Killer Sudoku

9x9 Killer SudokuIt may have taken a while but ‘9×9 Killer Sudoku’ games have finally been added to Mister Sudoku.

A total of 451 games were added to the FaceBook and iPhone (v1.2.1) versions of Mister Sudoku earlier this year (March-April).

Almost 12,000 of these games have been played with a total playing time in excess of 200 days.

The average playing time is just over 26 minutes per game and the maximum recorded duration of a single game is 30 hours, which certainly shows a level of determination on the part of the player!

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