Daily logic puzzle
Follow the
arrows.
One tap changes the neighbours marked by its arrows. Read the board, choose your move and darken every square.
3 × 3 and 4 × 4 to start. Optional in-app unlock.
The idea is simple
Small arrows.
A different puzzle.
- 01
Read the arrows
The triangles point to neighbouring squares that will change. A small centre square means the origin changes too.
- 02
Choose your tap
Only the marked neighbours and any indicated centre square switch between light and dark. Use Undo to try another idea.
- 03
Leave every square dark
Find a sequence that darkens the board. Your move counter lets you compare attempts and look for a cleaner solution.
A closer look
A clear board.
Room to explore.
Follow your progress, try a smaller grid and return to the puzzles available in your calendar.
Start with the daily puzzle
Your next challenge,
at your own pace.
Begin with the smaller boards. If you want more space to think, the optional unlock opens larger grids and the full calendar.
Start playing
- Daily puzzle
- 3 × 3 and 4 × 4 boards
- Recent puzzles
- Undo a move
Explore further
- 5 × 5 and 6 × 6 boards
- Full calendar access
- More room for your strategy
Larger boards and full calendar access require an in-app purchase.
A few useful answers
Before your
first tap.
What is the goal?
Darken every square. Each arrow shows a neighbouring square that changes when you tap. A small centre square means the origin changes too.
Can I undo a move?
Yes. Use Undo to return to the previous board and explore a different sequence.
What does the optional unlock include?
The 5 × 5 and 6 × 6 boards and full calendar access are unlocked with an in-app purchase. Start with the daily puzzle and 3 × 3 or 4 × 4 boards.
Can I return to earlier puzzles?
Choose an available date in the calendar to revisit its puzzle. Full calendar access requires the optional unlock.
DEKIS for iOS and Android
One board.
Where will you start?
Same goal. Different rules.
EKIS: Read the strokes. Change whole rows and diagonals.