One queen bee in every row, every column and every color zone, and never two side by side. Every grid has a single solution you can reach by pure logic: no lives, no guessing.
Tap a cell once to cross it out: no queen can go there. Drag to cross out several.
Tap again to place a queen. Her row, her column, her zone and the cells around her are crossed out for you.
A zone that fits in a single row, a column with one free cell left… Every grid falls to reasoning, never to luck.
1,000 hand-picked levels, from tiny 4 × 4 grids up to 10 × 10. After that, the game keeps making new ones, the same for every player.
One extra grid every day, matched to your level, and a streak of days to keep alive.
Stuck? The hint plays the next move and tells you why. The check button tells you whether everything is right so far.
Free on Android. Coming soon to iPhone.