PlaySudoku.us
Medium · Puzzle #539
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7
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8
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9
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7
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The BBC produced a television game show based on Sudoku in 2005, during the height of the puzzle's popularity.
The BBC produced a television game show based on Sudoku in 2005, during the height of the puzzle's popularity.
The 'Skyscraper' technique links two X-Wing candidates via a shared column — advanced but powerful on expert grids.
The 'Skyscraper' technique links two X-Wing candidates via a shared column — advanced but powerful on expert grids.