Normal sudoku rules apply. No 5 in the grid may be a chess queen's move away from another 5. Every set of 4 adjacent digits on a hollow peach line must contain a digit from each of the X-pair (ten-pair) subsets of {1,9}, {2,8}, {3,7}, and {4,6}. A 5 may not appear on a peach line. A white dot between two digits indicates that those digits are consecutive. A black dot between two digits indicates that one digit is double the other.