Normal sudoku rules apply. Cells separated by a single knight's move (in chess) cannot contain the same digit. The following constraints operate in this puzzle: 1) Cells connected by an X must sum to 10; 2) Cells connected by an V must sum to 5; 3) Digits in a cage sum to the small number in the cage's top-left corner; 4) Digits on an arrow sum to the digit in that arrow's circle; and 5) Digits on a thermometer must increase from the bulb end. Within any single constraint type listed above, digits may not repeat. (Eg If one caged cell contained a 1, no other caged cell anywhere in the puzzle can contain a 1.)