Normal sudoku rules apply. A cell with a circle contains an odd digit. A cell with a square contains an even digit. HOWEVER exactly one of the given symbols is a liar. It may be a square containing an odd digit or a circle containing an even digit.
Normal sudoku rules apply. A cell with a circle contains an odd digit. A cell with a square contains an even digit. HOWEVER exactly one of the given symbols is a liar. It may be a square containing an odd digit or a circle containing an even digit.