ChirashiGrid
Scatter one of each. Never touching.
Coming soon to the App Store
For iPhone and iPad
Every row, every column and every colour gets exactly one piece.
No two pieces may touch, not even corner to corner.
Every puzzle has exactly one answer, and you can always find the next move without guessing.
Six short lessons teach one idea at a time. When you ask for a hint, the board lights up the squares involved and explains the reasoning in plain words, so you get better, not just unstuck.
Chirashi Grid is built for iPhone, iPad and iPhone Duo, with layouts for portrait, landscape, a half-open fold and a book-style fold. No accounts. No tracking.