2026-09-09 daily answer

Step-by-step reasoning

1. Region 3 has only one safe cell left: R3C4.
2. R3C4 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 7 has only one safe cell left: R7C3.
4. R7C3 rules out cells in its row, column, color region, and touching neighborhood.
5. A cat at R1C2 leaves no valid completion, so exclude it.
6. A cat at R1C5 leaves no valid completion, so exclude it.
7. A cat at R1C6 leaves no valid completion, so exclude it.
8. A cat at R1C7 leaves no valid completion, so exclude it.
9. Row 1 has only one safe cell left: R1C1.
10. R1C1 rules out cells in its row, column, color region, and touching neighborhood.
11. A cat at R2C7 leaves no valid completion, so exclude it.
12. Row 2 has only one safe cell left: R2C6.
13. R2C6 rules out cells in its row, column, color region, and touching neighborhood.
14. Region 6 has only one safe cell left: R6C7.
15. R6C7 rules out cells in its row, column, color region, and touching neighborhood.
16. Row 4 has only one safe cell left: R4C2.
17. R4C2 rules out cells in its row, column, color region, and touching neighborhood.
18. Row 5 has only one safe cell left: R5C5.