Cat Sudoku Level 110 Hint
Find a colored region with only a few safe cells, then compare those cells against the row and column limits.
Cat Sudoku Level 110 Strategy
Hard Level 110 uses a 9x9 board with 9 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 110 Solution
Solution cells: R1C4, R2C1, R3C8, R4C6, R5C9, R6C7, R7C3, R8C5, R9C2.