2026-09-17 daily answer

Step-by-step reasoning

1. Region 2 has only one safe cell left: R2C5.
2. R2C5 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 3 has only one safe cell left: R3C7.
4. R3C7 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 1 has only one safe cell left: R1C1.
6. R1C1 rules out cells in its row, column, color region, and touching neighborhood.
7. Region 7 has only one safe cell left: R7C4.
8. R7C4 rules out cells in its row, column, color region, and touching neighborhood.
9. A cat at R4C2 leaves no valid completion, so exclude it.
10. Row 4 has only one safe cell left: R4C3.
11. R4C3 rules out cells in its row, column, color region, and touching neighborhood.
12. Row 5 has only one safe cell left: R5C6.
13. R5C6 rules out cells in its row, column, color region, and touching neighborhood.
14. Row 6 has only one safe cell left: R6C2.