Dog Sudoku Level 31 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 31 Strategy
Medium Level 31 uses a 8x8 board with 7 bones. Use the row and column dog counts first, then resolve bones with limited neighboring cells.
Dog Sudoku Level 31 Solution
Solution dog cells: R1C3, R2C7, R4C6, R5C8, R6C2, R7C8, R8C1.