Cat Sudoku Level 61 Hint
Find a colored region with only a few safe cells, then compare those cells against the row and column limits.
Cat Sudoku Level 61 Strategy
Medium Level 61 uses a 8x8 board with 8 colored regions. It starts with 1 fixed cats to anchor the solve. Work from the tightest rows and regions before placing a cat.
Cat Sudoku Level 61 Solution
Solution cells: R1C4, R2C2, R3C8, R4C3, R5C7, R6C5, R7C1, R8C6.