Divide the grid into non-overlapping regions. Regions can be any size (including one cell) but the cells in a region must be orthogonally connected with one another. Every cell should contain a number equal to the number of cells in its region. Regions of the same size cannot share an edge. A number in a circle indicates how many circles contain that number. (There are 41 circles in all.)\\nNote for solution checking: for regions larger than 9 cells, enter the units digit of the region size. Leave the cells with the given 15 and 26 clues empty.