Shade some empty cells grey to create a single connected wall. The shaded cells cannot form a 2x2 square anywhere in the grid. Numbers in a circled cell indicate the length of consecutive shaded blocks in the neighboring cells. If there is more than one number in a circled cell, then there must be at least one white (unshaded) cell between the grey cell groups. Also, all unshaded cells of the grid should contain all digits from 1 to 7 in each row and column. All cells marked with circles should contain at least one digit (and therefore they are not shaded). The digits in circles are valid clues for Tapa and pencilmark clues for sudoku. You should place one or more digits in the empty circles but you cannot make additions to given circle clues. All possible circled cells may not be given (ie there may be some cells without circles that are valid clues for both the Tapa and sudoku.)