Cat Sudoku Level 185 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 185 Strategy
Expert Level 185 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 185 Solution
Solution cells: R1C9, R2C3, R3C7, R4C5, R5C2, R6C4, R7C8, R8C1, R9C6.