Nightwatch hints for September 27, 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 2, column 2 lies in this courtyard, so its lantern is one of them — 8 other squares are out.

Squares this rules out:

• row 1, column 1
• row 3, column 1
• row 4, column 1
• row 5, column 1
• row 5, column 2
• row 5, column 3
• row 6, column 2
• row 6, column 3

10 lanterns, one in each courtyard:

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