Nightwatch hints for October 10, 2026

Every square that could light one of these dark squares lies inside this one courtyard, so its lantern is one of them — the rest of the courtyard is out.

Look at the magenta courtyard that includes the square at row 1, column 1.

Every square that could light row 1, column 3 lies in this courtyard, so its lantern is one of them — 1 other square is out.

Squares this rules out:

• row 2, column 1

9 lanterns, one in each courtyard:

1. row 1, column 3
2. row 1, column 5
3. row 2, column 2
4. row 3, column 3
5. row 4, column 1
6. row 5, column 7
7. row 6, column 8
8. row 8, column 4
9. row 8, column 6