Dog Sudoku Level 80 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 80 Strategy
Medium Level 80 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 80 Solution
Solution dog cells: R1C7, R2C5, R4C4, R5C8, R6C6, R8C1, R8C3.