Rules:
1. Normal sudoku rules apply.
2. Kropki dots: Digits in cells joined by a white dot are consecutive. Digits in cells joined by a black dot are in a 1:2 ratio.
3. Palindrome: Digits along a grey line read the same in both directions.
4. Little killer: A clue outside the grid gives the sum of the digits along the indicated diagonal.
5. Killer: Digits in a cage sum to the clue in the top left corner of the cage.
Puzzle:
Solution code: Row 1 and 4:
today, 06:38 by FlxCat
Edit puzzle for better symmetry thanks to @h0_0man
yesterday, 20:34 by FlxCat
Adjust expected difficulty
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