Logic Masters Deutschland e.V.

The “Colours in the (k)night” series continues. I hope you enjoy it.

Here are the links to the previous parts of the series:

Colours in the (k)night

Colours in the (k)night II

Colours in the (k)night III

Colours in the (k)night IV

Colours in the (k)night V

Colours in the (k)night VI

Colours in the (k)night VII

Colours in the (k)night VIII

Colours in the (k)night IX

Colours in the (k)night X

Normal Sudoku rules apply. Place the digits 1–9 once in every row, column, and 3×3 box.

Anti-Knight: Cells a knight’s move apart in chess cannot contain the same digit.

XV: Cells separated by a V sum to 5; cells separated by an X sum to 10. Not all Vs and Xs are necessarily given.

Negative diagonal: Digits along the negative diagonal cannot repeat.

Quadruple: Digits in the white circels must appear at least once in the four surrounding cells.

Solve online:Sudokupad

Happy solving!