Cat Sudoku Level 206 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 206 Strategy
Expert Level 206 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 206 Solution
Solution cells: R1C4, R2C7, R3C5, R4C8, R5C2, R6C6, R7C9, R8C1, R9C3.