Logic Masters Deutschland e.V.

The 4-cell boxes in YELLOW (4 in total) are mystery squares. Each mystery square is comprised of only 2 digits. (such as 8-5-8-5)

The 4-cell boxes in DARK GREEN (4 in total) contain one repeating digit and the other two are different. (such as 2-4-7-4)

The 4-cell boxes in RED (2 in total) contain either all odd or all even digits. There will be one of each parity.

ALL 4-cell boxes (16 in total) sum to the same amount.

ALL 2-cell boxes (4 in total) in LIGHT GREEN sum to half the amount of a 4-cell box.

Normal sudoku rules apply.

Normal killer cage sudoku rules apply. Numbers must not repeat in a cage. The numbers in the cage must sum to the given total in the top left corner, if given.

Numbers along an arrow must sum to the number shown in the circled cells.

Numbers on a thermometer must strictly increase as they move away from the bulb.

Numbers that appear in the cells between a ratio constraint must have a ratio of the indicated number. If no number is entered, the ratio will be assumed to be 2.

F-puzzles link - link to solve online