Nightwatch hints for October 18, 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 leaf courtyard that includes the square at row 3, column 4.

Every square that could light row 5, column 5 lies in this courtyard, so its lantern is one of them — 11 other squares are out.

Squares this rules out:

• row 3, column 4
• row 3, column 6
• row 3, column 7
• row 3, column 8
• row 4, column 4
• row 4, column 6
• row 4, column 7
• row 4, column 8
• row 5, column 7
• row 5, column 8
• row 6, column 4

10 lanterns, one in each courtyard:

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