2026-10-10 daily answer

Step-by-step reasoning

1. Region 1 has only one safe cell left: R1C3.
2. R1C3 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 3 has only one safe cell left: R3C9.
4. R3C9 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 5 has only one safe cell left: R5C6.
6. R5C6 rules out cells in its row, column, color region, and touching neighborhood.
7. Region 6 has only one safe cell left: R6C8.
8. R6C8 rules out cells in its row, column, color region, and touching neighborhood.
9. Region 8 has only one safe cell left: R8C1.
10. R8C1 rules out cells in its row, column, color region, and touching neighborhood.
11. Column 2 has only one safe cell left: R4C2.
12. R4C2 rules out cells in its row, column, color region, and touching neighborhood.
13. Region 9 has only one safe cell left: R9C5.
14. R9C5 rules out cells in its row, column, color region, and touching neighborhood.
15. Row 2 has only one safe cell left: R2C7.
16. Row 7 has only one safe cell left: R7C4.