How to play Queens
Place exactly one queen in every row, column and colored region. Queens cannot touch, including diagonally. Queens farther apart may share a diagonal. Region letters identify the colors.
Tap a square to place or remove a queen. Turn on Mark empty squares to add × notes, or right-click a square. Highlighted queens conflict. Undo reverses a move; Hint places one queen from the unique solution. Daily puzzles reset at midnight UTC; practice has three board sizes.