填入1~7，使得每行、列、宫内数字不重复，宫可能是锯齿状的。
Fill the grid with 1~7, make numbers no repeated in each Row, Column and Box. The Box may be irregular.
标准数独基础上，涂色格等于其左右两侧数字之差，也等于其上下两侧数字之差。
Classic rules applied. Additionally, the colored cell equals to the difference between the numbers on the left and right sides, as well as the difference between the numbers on the top and bottom sides.
标准数独基础上，每条线能被分割成一段或者多段，并且每一段上数字的和都是10。
Classic rules applied. Additionally, each line can be divided into one or several pieces, with numbers in each pieces sum to 10.
填入1~5，使得每行、列、宫内数字不重复。此外，每行、列、宫中都应该有一颗星（用0代替），并且星星之间不能彼此接触。箭头所在的格如果是N，则箭头方向上第N格是星。
标准数独基础上，每条线条上的数字之和等于两侧菱形之一里的数字。
Classic rules applied. Additionally, the sum of numbers on each line, equals to one of the diamond on the end.
标准数独基础上，每条温度计上数字只能不变或变大。
Classic rules applied. Additionally, numbers can only be immutable or increasing on each thermo.
标准数独基础上，每条对角线上数字也不重复。
Classic rules applied. Additionally, numbers cannot repeat on each diagonal.
标准数独基础上，提示⑤表示其周围数字之和为5，提示⑥表示其周围数字之和为6。所有和是5或6的情况都被标记了。
Classic rules applied. Additionally, 5 is marked between two digits in adjacent squares with the sum of 5, and 6 likewise. All the adjacent pairs that have a sum of 5 or 6 are marked.
标准数独基础上，涂色格同时满足堡垒数独规则，以及额外区域数独规则。
Classic rules applied. Additionally, numbers in colored cells fits both the rules of Fortress and Extra Regions.
填入1~9使得每行列宫内数字不重复。提示数列举了其所在单元格中的所有可能性。
Write 1~9 to make numbers no repeated in each Row, Column or Box. The clue shows all the possible candidates in the cell it exists.
