One crystal in every rising lane
Follow each diagonal lane that rises across the board.
A logic puzzle for iPhone
HexDoku
Find every crystal. Never guess.
Read crossing lanes and color groups on a hexagonal board. Every puzzle has one logical solution.
Three campaigns let you choose a small, medium, or large board.
How to play
Four rules. That's it.
Place crystals where they must go. Mark every impossible space with an X until the whole board is solved.
One crystal in every falling lane
Do the same for every diagonal lane in the other direction.
One crystal in every color
Each color group contains exactly one crystal.
Crystals cannot touch
Not even across an edge. Use X marks to rule spaces out.