Cat Sudoku Level 55 Hint
Find a colored region with only a few safe cells, then compare those cells against the row and column limits.
Cat Sudoku Level 55 Strategy
Medium Level 55 uses a 8x8 board with 8 colored regions. It starts with 2 fixed cats to anchor the solve. Work from the tightest rows and regions before placing a cat.
Cat Sudoku Level 55 Solution
Solution cells: R1C5, R2C8, R3C4, R4C7, R5C1, R6C3, R7C6, R8C2.