Monday 13 November 2017

PUZZLE NO. 16 : EXTRA REGIONS SUDOKU


RULES : Classic sudoku rules apply. Additionally , each group of nine coloured cells must also contain the digits 1 to 9.                                           

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Puzzle No. 431: Killer-German Whispers Hybrid Sudoku

  RULES: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.  The...