2026-07-25 daily answer

Step-by-step reasoning

1. Region 1 has only one safe cell left: R1C9.
2. R1C9 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 5 has only one safe cell left: R5C7.
4. R5C7 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 3 has only one safe cell left: R3C8.
6. R3C8 rules out cells in its row, column, color region, and touching neighborhood.
7. Region 6 has only one safe cell left: R6C2.
8. R6C2 rules out cells in its row, column, color region, and touching neighborhood.
9. Region 9 has only one safe cell left: R9C3.
10. R9C3 rules out cells in its row, column, color region, and touching neighborhood.
11. A cat at R2C1 leaves no valid completion, so exclude it.
12. Region 4 has only one safe cell left: R4C1.
13. R4C1 rules out cells in its row, column, color region, and touching neighborhood.
14. A cat at R2C4 leaves no valid completion, so exclude it.
15. Column 4 has only one safe cell left: R7C4.
16. R7C4 rules out cells in its row, column, color region, and touching neighborhood.
17. Row 8 has only one safe cell left: R8C6.
18. R8C6 rules out cells in its row, column, color region, and touching neighborhood.
19. Row 2 has only one safe cell left: R2C5.