Dog Sudoku Level 169 Hint
Find a bone with only two or three available neighboring cells, then test those cells against the row count, column count, and no-touch rule.
Dog Sudoku Level 169 Strategy
Hard Level 169 uses a 9x9 board with 11 bones. Use the row and column dog counts first, then resolve bones with limited neighboring cells.
Dog Sudoku Level 169 Solution
Solution dog cells: R1C5, R2C1, R2C3, R2C9, R3C6, R5C2, R5C8, R6C4, R7C1, R7C9, R9C3.