规则Rules：
填入1~3，使得每行、列、宫内都是1~3及一个空格不重复。外提示是这一方向上的摩天楼数，空格是花园，不计入空格的高度。解题时无需在空格内填入数字或符号。
Write 1~3, make numbers no repeated in each Row, Column and Box, and each region contains a blank cell. The outside clue is the skyscraper numbers in this direction, the blank cell is "Gardern" with no height. You don't need to input number or signs in the blank cells when solving the puzzle.
◆摩天楼数 Skyscraper number
摩天楼数表示从这一方向上观察，大数字能遮住小数字时，可以看见的数字的个数。
The skyscraper number shows how many numbers can be seen in this direction, when larger number will hide lower ones.
