Cat Sudoku Level 193 Hint
Look for a region whose legal cells are squeezed by two or more neighboring rows. High-level puzzles often move through exclusion, not obvious singles.
Cat Sudoku Level 193 Strategy
Expert Level 193 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 193 Solution
Solution cells: R1C1, R2C8, R3C5, R4C9, R5C4, R6C6, R7C3, R8C7, R9C2.