Dog Sudoku Level 117 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 117 Strategy
Hard Level 117 uses a 8x8 board with 9 bones. Use the row and column dog counts first, then resolve bones with limited neighboring cells.
Dog Sudoku Level 117 Solution
Solution dog cells: R1C8, R2C1, R4C3, R4C8, R6C3, R6C5, R6C8, R8C2, R8C8.