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Nightwatch hints for October 20, 2026

Nightwatch is a free Light Up (Akari) logic puzzle for Android by Brightloop Studios.

Night 50: a 6×6 board with 6 courtyards. Play it here. If you get stuck, open one hint at a time.

Tuesday, October 20

30 dark0:00

6×6 Night 50

Rules

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Hint 1: where to look

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 1, column 3.

Hint 2: the first forced move

Every square that could light row 3, column 6 lies in this courtyard, so its lantern is one of them — 4 other squares are out.

The board with those squares crossed out

Squares this rules out:

  • row 1, column 3
  • row 1, column 4
  • row 1, column 5
  • row 2, column 5
Show answer
The solved board for October 20, 2026

6 lanterns, one in each courtyard:

  1. row 1, column 2
  2. row 2, column 4
  3. row 3, column 1
  4. row 3, column 6
  5. row 5, column 6
  6. row 6, column 3
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Tonight is lit.

0:00

Keep playing: 70 rounds, hints that teach, offline

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Archive

The third hint

The third hint can point to one square and prove it. It lives in the app.

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Clear the board?

Every lantern and pencil mark comes off and the clock goes back to zero.

The four rules

  1. Every courtyard gets exactly one lantern.
  2. A lantern lights its own square and shines along its row and column until a wall stops it. A courtyard edge does not stop light, and a lantern set on a lit square is dazzled, which is never allowed.
  3. No lantern may shine on another lantern.
  4. Every open square must end up lit.

How to play