Normal sudoku rules apply. Place 9 “Copycat Cells” into the grid so that there is exactly one Copycat Cell in each row, column, and 3x3 box. Each Copycat Cell must contain a different digit. The value of a Copycat Cell is the digit in the cell rotationally opposite itself in the grid (180° rotation about the centre of the grid). For example, if r2c3 is a Copycat Cell containing the digit 5, and r8c7 contains the digit 9, the value of r2c3 is the digit in r8c7, which is 9. Values an equal distance from the centre of a lavender line sum to the value in the centre of the line (which is marked with a small circle). A value in a yellow circle counts the number of odd values on the attached line.