2026-10-16 daily answer

Step-by-step reasoning

1. Region 1 has only one safe cell left: R1C1.
2. R1C1 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 2 has only one safe cell left: R2C6.
4. R2C6 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 4 has only one safe cell left: R4C8.
6. R4C8 rules out cells in its row, column, color region, and touching neighborhood.
7. Region 7 has only one safe cell left: R7C7.
8. R7C7 rules out cells in its row, column, color region, and touching neighborhood.
9. Region 8 has only one safe cell left: R8C3.
10. R8C3 rules out cells in its row, column, color region, and touching neighborhood.
11. Region 6 has only one safe cell left: R6C5.
12. R6C5 rules out cells in its row, column, color region, and touching neighborhood.
13. Row 5 has only one safe cell left: R5C2.
14. R5C2 rules out cells in its row, column, color region, and touching neighborhood.
15. Row 3 has only one safe cell left: R3C4.