2026-09-04 daily answer

Step-by-step reasoning

1. Region 1 has only one safe cell left: R1C8.
2. R1C8 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 7 has only one safe cell left: R7C1.
4. R7C1 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 8 has only one safe cell left: R8C6.
6. R8C6 rules out cells in its row, column, color region, and touching neighborhood.
7. A cat at R2C2 leaves no valid completion, so exclude it.
8. A cat at R2C3 leaves no valid completion, so exclude it.
9. A cat at R2C5 leaves no valid completion, so exclude it.
10. Row 2 has only one safe cell left: R2C4.
11. R2C4 rules out cells in its row, column, color region, and touching neighborhood.
12. Region 6 has only one safe cell left: R6C5.
13. R6C5 rules out cells in its row, column, color region, and touching neighborhood.
14. Region 5 has only one safe cell left: R5C3.
15. R5C3 rules out cells in its row, column, color region, and touching neighborhood.
16. Row 4 has only one safe cell left: R4C7.
17. R4C7 rules out cells in its row, column, color region, and touching neighborhood.
18. Row 3 has only one safe cell left: R3C2.