Dog Sudoku Level 64 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 64 Strategy
Medium Level 64 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 64 Solution
Solution dog cells: R2C2, R2C4, R3C7, R4C4, R6C3, R6C6, R7C8.