Self-contained

Solve Puzzle

Rules

• Normal sudoku rules apply.
  Every row, column, and 3 × 3 box contains all digits 1-9.
• Antiknight rule applies.
  Digits separated by a chess knight’s move must not be identical.
• Killer rule applies.
  Digits in a cage sum to the number written in the corner of the cage. Digits may not repeat in a cage.