Dog Sudoku Level 129 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 129 Strategy
Hard Level 129 uses a 9x9 board with 10 bones. Use the row and column dog counts first, then resolve bones with limited neighboring cells.
Dog Sudoku Level 129 Solution
Solution dog cells: R1C3, R2C8, R4C2, R4C4, R5C6, R5C8, R6C1, R7C4, R7C7, R9C3.