Cat Sudoku Level 169 Hint
Find a colored region with only a few safe cells, then compare those cells against the row and column limits.
Cat Sudoku Level 169 Strategy
Hard Level 169 uses a 8x8 board with 8 colored regions. It starts without fixed cats, so the region shapes and no-touch rule do the work. Work from the tightest rows and regions before placing a cat.
Cat Sudoku Level 169 Solution
Solution cells: R1C7, R2C5, R3C3, R4C1, R5C8, R6C2, R7C6, R8C4.