2026-08-13 daily answer

Step-by-step reasoning

1. Region 3 has only one safe cell left: R3C2.
2. R3C2 rules out cells in its row, column, color region, and touching neighborhood.
3. Region 5 has only one safe cell left: R5C6.
4. R5C6 rules out cells in its row, column, color region, and touching neighborhood.
5. Row 4 has only one safe cell left: R4C4.
6. R4C4 rules out cells in its row, column, color region, and touching neighborhood.
7. Row 2 has only one safe cell left: R2C7.
8. R2C7 rules out cells in its row, column, color region, and touching neighborhood.
9. Row 6 has only one safe cell left: R6C3.
10. R6C3 rules out cells in its row, column, color region, and touching neighborhood.
11. Row 1 has only one safe cell left: R1C1.
12. Row 7 has only one safe cell left: R7C5.