Normal sudoku rules apply. Two cells connected by a Yellow line must have a difference of at least 4. Two cells connected by a Green line must have a difference of at least 5. Two cells connected by a Red line have a different odd/even parity. The Grey line must be divided into contiguous groups of cells that each sum to 10. These groups of cells cannot overlap. Cells separated by a white dot contain consecutive digits. Cells separated by X sum to 10. Yellow: Earns 1 point for every 5 on its path. Green: Earns 1 point for every 4 or 6 on its path. Red: Earns 1 point for every adjacent pair of consecutive digits along its path. Grey: Earns 1 point for every 3-cell segment that sums to 10 along its path. Yellow beats Green, who beats Red, who beats Grey.
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