Place the digits from 1 to 6 exactly once in every row, column, and region. The regions are orthogonally OR diagonally connected and must be located by the solver. A number in the top left corner of a cell indicates the sum of the digits in the orthogonally connected section of the region that cell belongs to. A cell with a red X in the bottom right corner indicates the size (ie the number of cells) of the orthogonally connected section of the region that cell belongs to. All possible size clues (red Xs) are given.