Normal sudoku rules apply. Divide the grid into galaxies: orthogonally connected groups of cells that have 180-degree rotational symmetry about their centers (marked with a small dot). All cells must be part of a galaxy; no galaxies overlap. Grey Dots mark "renban" galaxies: those with two or more cells, whose digits form an unbroken consecutive sequence in any order. White dots mark galaxies of either a single cell, or whose digits do NOT form a sequence. Digits may not repeat within a galaxy. As per Galactic Map Standards: All galaxies with at least TWO cells indicate their SMALLEST digit with a diamond icon. All galaxies with at least SIX cells indicate their LARGEST digit with a circle icon.