How to Play
Master the rules in minutes. This guide covers everything you need to start solving.
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How to Play
- Fill the grid so that each cell contains either a or a .
- No more than 2 or may be next to each other, either vertically or horizontally.
- Each row (and column) must contain the same number of and .
- Cells separated by a x sign must be of the opposite type.
- Each puzzle has one right answer and can be solved via deduction (you should never have to make a guess).
Constraint Symbols
=
Same
Adjacent cells must have the same value
x
Different
Adjacent cells must have opposite values
Pro Tips
Propagate constraints outward from the given values.
Each must contain exactly 3 suns and 3 moons when complete.
"=" locks pairs to the same value, "x" forces opposites.
Undo a step and try the opposite toggle direction.
Build speed with random boards before tackling the Daily.
Daily
Same puzzle for everyone, every day
Unlimited
Endless puzzles with unique seeds
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