Gan Jing WorldPuzzles

Day & Night

Half day, half night, never three in a row

  1. Every row and column is half day, half night.

  2. Never three in a row, across or down.

  3. Linked rings: same, ⇄ opposite.

Controls

  • Tap for day, again for night, again to clear.
  • Cells with a pin are fixed.
  • Keys: arrows, Space, D, N, Backspace, Ctrl/⌘+Z.

After two alike comes the other.