2026-07-17 daily answer

Step-by-step reasoning

1. Region 3 has only one safe cell left: R3C7.
2. R3C7 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 5 has only one safe cell left: R5C5.
4. R5C5 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 6 has only one safe cell left: R6C2.
6. R6C2 rules out cells in its row, column, color region, and touching neighborhood.
7. Region 8 has only one safe cell left: R8C8.
8. R8C8 rules out cells in its row, column, color region, and touching neighborhood.
9. A cat at R1C1 leaves no valid completion, so exclude it.
10. A cat at R1C3 leaves no valid completion, so exclude it.
11. Region 1 has only one safe cell left: R1C4.
12. R1C4 rules out cells in its row, column, color region, and touching neighborhood.
13. Row 2 has only one safe cell left: R2C1.
14. R2C1 rules out cells in its row, column, color region, and touching neighborhood.
15. Row 4 has only one safe cell left: R4C3.
16. Row 7 has only one safe cell left: R7C6.