The Unnecessary Theorem

by Dr Logic · Difficulty 4 of 5 by Dr Logic

CASE 2020

The Unnecessary Theorem

byDr Logic

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More from Dr Logic

  • Kropki dots
  • XV and number dots
  • Arrows
  • Zipper lines
  • Whisper lines
  • Nabner lines
  • Odd and even cells

The brief

Normal Sudoku rules apply.

Digits along the arrow sum to the digit placed in the connected circle.

Digits cannot repeat along a gold 'nabner' line and cannot contain any two consecutive numbers.

Digits equidistant from the centre of purple 'zipper' lines sum to the digit in the centre.

Adjacent digits along a green 'german whispers' line differ by at least 5.

Cells separated by an X sum to 10. Not all such Xs are given.

Cells separated by a black dot are in a 1:2 ratio. Cells separated by a white dot are consecutive. Not all such dots are given.

Cells marked with a square are even.

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