How to play
How to Play Queens
LogicPlace exactly one queen in every row, column, and colored region.
Try demo puzzleRules
- Each row, column, and color region must contain exactly one queen.
- No two queens may touch — not even diagonally.
- Use X marks to rule out cells where a queen cannot go.
Controls
- Tap a cell to place X, tap X again to place a queen, and tap queen again to clear the cell. The cell state cycle is: empty → X mark → queen → empty.
- Conflicting placements are highlighted so you can fix them.
- When a queen is placed, it automatically crosses out the empty cells in its row, column, and region with a faint X.
- Get hint suggests a logical next move with an explanation; click Apply hint to place it on the board.
- Undo reverses your last change.
- Reset clears the board and starts over.
Tips
- If a row, column, or region already has a queen, every other cell in that group is blocked.
- Look for regions that force a queen into only one possible row or column.
- Look for cells which can not contain a queen due to the rules.
FAQ
Queens questions
Quick answers about goals, rules, and controls.
Place exactly one queen in every row, column, and colored region.
Each row, column, and color region must contain exactly one queen. No two queens may touch — not even diagonally. Use X marks to rule out cells where a queen cannot go.
Tap a cell to place X, tap X again to place a queen, and tap queen again to clear the cell. The cell state cycle is: empty → X mark → queen → empty. Conflicting placements are highlighted so you can fix them. When a queen is placed, it automatically crosses out the empty cells in its row, column, and region with a faint X. Get hint suggests a logical next move with an explanation; click Apply hint to place it on the board. Undo reverses your last change. Reset clears the board and starts over.
If a row, column, or region already has a queen, every other cell in that group is blocked. Look for regions that force a queen into only one possible row or column. Look for cells which can not contain a queen due to the rules.