Normal sudoku rules apply. Neighbouring digits along a Green Champagne Flute differ by at least 5. Neighbouring digits along an Orange Champagne Flute Line differ by at least 4. Box borders divide the Blue Champagne Flute into segments with the same sum. A purple glass base is a consecutive set of digits in any order. Cells separated by a Champagne bubble contain consecutive digits. Quad circles show the digits in the four surrounding cells.