Queens Logic
PuzzleFree to playPlace one queen per row, column, and color region. No two queens may touch, even at a corner.
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How to Play
Queens Logic asks you to place one queen in every row, every column, and every colored region of the grid, with no two queens touching even diagonally. Tap an empty cell to drop a queen there, and tap it again to lift it. The board highlights any conflict so you can see mistakes immediately. Pick a board size before starting: 6x6 for a quick solve, 7x7 for the classic feel, or 8x8 when you want the regions to really bite. The puzzle is solved once all queens are placed and every rule holds, and every generated board is guaranteed to have at least one solution.
Controls
- Tap a cell to place or remove a queen
- Avoid sharing a row, column, region, or diagonal
Tips & Tricks
- 1One queen per row, column, and region
- 2Queens may not touch, even at a corner
- 3Conflicts are highlighted as you place
- 4Fill the smallest region first — a region with only one or two free cells usually forces its queen immediately
- 5Cross off the whole diagonal ring around each placed queen; it eliminates more cells than the row and column alone
Frequently Asked Questions
What are the placement rules?
Exactly one queen per row, per column, and per colored region, with no two queens orthogonally or diagonally adjacent.
What are the exact placement rules?
One queen in every row, every column and every coloured region, and no two queens may touch, not even diagonally.
How do I fix a mistake?
Tap a placed queen again to lift it. The board highlights any conflict, so illegal placements are visible straight away.
Is every board solvable?
Yes — every generated board is guaranteed to have at least one solution.
Which size should I start with?
6x6 for a quick solve, 7x7 for the classic feel, and 8x8 when you want the regions to really bite.
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