Cat Sudoku Level 236 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 236 Strategy
Master Level 236 uses a 10x10 board with 10 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 236 Solution
Solution cells: R1C7, R2C3, R3C9, R4C6, R5C10, R6C4, R7C2, R8C5, R9C1, R10C8.