Cat Sudoku Level 112 Hint
Find a colored region with only a few safe cells, then compare those cells against the row and column limits.
Cat Sudoku Level 112 Strategy
Hard Level 112 uses a 9x9 board with 9 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 112 Solution
Solution cells: R1C5, R2C7, R3C9, R4C3, R5C6, R6C8, R7C1, R8C4, R9C2.