Observer killer sudoku

Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner

Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner. No number can be repeated within each shape formed by grey lines.

Buy next week’s Observer Digital Edition to see the completed puzzle.

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Observer killer sudoku
Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner

28, Jan, 2018 @12:01 AM

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Observer killer sudoku
Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner

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Observer killer sudoku
Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner

11, Feb, 2018 @12:01 AM

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Observer killer sudoku
Normal sudoku rules apply, except the numbers in the cells contained within dotted lines add up to the figures in the corner. No number can be repeated within each shape formed by dotted lines

20, May, 2017 @11:01 PM

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Observer killer sudoku
Observer killer sudoku

08, Jul, 2017 @11:01 PM

Article image
Observer killer sudoku
Normal sudoku rules apply, except the numbers in the cells contained within dotted lines add up to the figures in the corner. No number can be repeated within each shape formed by dotted lines.

10, Jun, 2017 @11:01 PM

Article image
Observer killer sudoku
Normal sudoku rules apply, except the numbers in the cells contained within dotted lines add up to the figures in the corner. No number can be repeated within each shape formed by dotted lines

12, Aug, 2017 @11:01 PM

Article image
Observer killer sudoku
Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner.

05, Aug, 2017 @11:01 PM

Article image
Observer killer sudoku
Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner.

09, Sep, 2017 @11:01 PM

Article image
Observer killer sudoku
Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner

07, Oct, 2017 @11:01 PM