Cat Sudoku Level 78 Hint
Find a colored region with only a few safe cells, then compare those cells against the row and column limits.
Cat Sudoku Level 78 Strategy
Medium Level 78 uses a 7x7 board with 7 colored regions. It starts with 1 fixed cats to anchor the solve. Work from the tightest rows and regions before placing a cat.
Cat Sudoku Level 78 Solution
Solution cells: R1C6, R2C1, R3C3, R4C5, R5C7, R6C2, R7C4.