Normal Sudoku rules apply. Enter the digits 1 to 9 in each row, column, and 3×3 box.

Arrows: Digits along the arrows (spokes of the “sun”) sum to the digit in the center circle.

Little killer: The numbered arrows outside the grid indicate the sum of the digits in the corresponding direction. Digits can repeat in the direction of the arrow.

Killer cages: The sum of all digits in a cage must match the small number in its corner.

Kropki: Adjacent cells marked with a black dot must have a ratio of 2.

V: Adjacent cells marked with a V must sum to 5.

Quadruple: The four cells surrounding the circle with a digit must contain that digit.