Coronet

One crown per ring, slice and color.

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Slice 1 is at the top, counting clockwise. Arrow keys move: left and right go round a ring, up and down go between rings. Space cycles empty, mark, queen. Q places a queen, X marks, Backspace clears, Z undoes.

How to play

  1. Place one queen in every ring, every slice and every color.
  2. Tap an arc to mark it ×, tap again for a queen, once more to clear. Drag across arcs to mark many.
  3. A queen marks its whole ring, slice and color for you. Take it away and those marks go too — yours stay.

Keyboard: arrows to move, Space to cycle, Q queen, X mark, ⌫ clear, Z undo, P pause.