Every day a new Str8ts puzzle game. A 9x9 grid is divided by black cells into compartments. Each stack, vertically or horizontally, must contain a line segment, a set of consecutive numbers, but in any order. For example, 7, 6, 4, 5 are valid, but 1, 3, 8, 7 are not. Fill in the remaining blank cells with numbers 1 to 9 so that each row and column contains unique digits. Additional clues are placed in a number of black boxes, which remove that digit as an option in rows and columns. Such digits do not form part of any straight line.