Normal Sudoku Rules Apply.
Diagonal: Along marked diagonals, digits may not repeat.
Sandwich Sums: Numbers (on their own) outside of the grid indicate the sum of the digits between the digits 1 and 9 in that respective row/column.
Little Killers: Clues outside the grid are the sum of the digits along the indicated diagonal. Digits may repeat if allowed by other rules.
Clones: Highlighted shapes are clones. Digits must appear in identical positions in each copy of the clone.
Symmetry: Digits that are rotationally symmetric (turn 180 degrees) sum to 10.
Puzzle:
Solution code: Row 8