2026-10-15 daily answer

Step-by-step reasoning

1. Region 2 has only one safe cell left: R2C3.
2. R2C3 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 3 has only one safe cell left: R3C6.
4. R3C6 rules out cells in its row, column, color region, and touching neighborhood.
5. Region 1 has only one safe cell left: R1C1.
6. R1C1 rules out cells in its row, column, color region, and touching neighborhood.
7. Region 5 has only one safe cell left: R5C7.
8. R5C7 rules out cells in its row, column, color region, and touching neighborhood.
9. Region 4 has only one safe cell left: R4C4.
10. R4C4 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 7 has only one safe cell left: R7C2.