Somewhere Around Seven

by sujoyku by sujoyku

CASE 4246

Somewhere Around Seven

bysujoyku

Open on SudokuPad
Not graded: we can’t read all its rules yet
  • Whisper lines
  • Palindromes

The brief

DECONSTRUCTION SUDOKU

  • There exist nine non-overlapping 3x3 square regions which must be located. Each region contains the digits from 1 to 9 once each, such that no digit repeats in any row or column.
  • All cells that do not belong to a region contain a 0.

COUNTING PALINDROMES

  • The digits on a grey line form a palindrome, i.e. they read the same forward and backward.
  • Along a palindrome, there may not be two consecutive 0s.
  • Any digit greater 0 that lies on a palindrome indicates exactly how many of its up to 8 surrounding cells contain a 0.

GERMAN WHISPERS

  • Adjacent digits on a green line must have a difference of at least 5.
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