Dog Sudoku Level 115 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 115 Strategy
Hard Level 115 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 115 Solution
Solution dog cells: R1C1, R1C8, R3C9, R4C1, R4C5, R5C9, R6C4, R6C7, R9C3, R9C9.