{"localization":"Oh, I see it now, it's second-order logic. You have to consider some horizontal and vertical clues simultaneously. The logic is like this: You know that the center square of the bottom row is part of the \"9\" clue. If the 9 squares are too far to the left or too far to the right, it becomes impossible to satisfy the \"3\" clues row just above the bottom due to the presence of several \"2\" in the bottom of several of the columns. So there's only one possible positioning of the 9.","ok":true}