Square Dance
- Killer cages
- Odd and even cells
The brief
Normal Sudoku rules apply. Numbers in cages sum to the number in the top left corner of the cage. Numbers in cells with gray squares are even. You are looking at a square dance below you. Each of the EVEN numbers shown arrived at the dance with an EVEN partner that is ADJACENT TO THEM RIGHT NOW, but not shown. The 18 shown EVEN numbers have temporarily changed partners in the dance (a cage of 2 each). Find all 18 original EVEN partners that are not shown and complete the puzzle.