Logic Masters Deutschland e.V.

by burgermason

RULES:

• Normal sudoku rules apply.
• Every 2x2 square of cells must contain a digit from (1,4,7), a digit from (2,5,8) and a digit from (3,6,9). Digits along green lines must differ by at least 5.
• Grey lines are palindrome lines, on which digits form a palindrome.
• Digits separated by black dots are in a 1:2 ratio.