Dog Sudoku Level 174 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 174 Strategy
Hard Level 174 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 174 Solution
Solution dog cells: R3C1, R3C4, R3C6, R4C8, R5C4, R5C6, R6C2, R6C8, R8C7.