2026-09-25 daily answer

Step-by-step reasoning

1. Region 3 has only one safe cell left: R3C3.
2. R3C3 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 4 has only one safe cell left: R4C8.
4. R4C8 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 5 has only one safe cell left: R5C2.
6. R5C2 rules out cells in its row, column, color region, and touching neighborhood.
7. Region 7 has only one safe cell left: R7C6.
8. R7C6 rules out cells in its row, column, color region, and touching neighborhood.
9. Row 6 has only one safe cell left: R6C4.
10. R6C4 rules out cells in its row, column, color region, and touching neighborhood.
11. Row 8 has only one safe cell left: R8C1.
12. R8C1 rules out cells in its row, column, color region, and touching neighborhood.
13. Region 1 has only one safe cell left: R1C5.
14. R1C5 rules out cells in its row, column, color region, and touching neighborhood.
15. Row 2 has only one safe cell left: R2C7.