Dog Sudoku Level 157 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 157 Strategy
Hard Level 157 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 157 Solution
Solution dog cells: R1C2, R1C8, R2C4, R4C3, R5C8, R6C1, R6C4, R7C6, R7C8, R9C3, R9C6.