标准数独基础上，对于在杠杆上的任一数字而言，其与该杠杆中心的距离（中心格的相邻格算作距离1），乘以其本身的大小称为其力矩。对于每一个杠杆，其两侧的所有力矩之和相等。
标准数独基础上，这个题目有多个答案，但你只需要找到唯一确定的一格。
Classic rules applied. Additionally, this puzzle has multiple answers, your just need to find the unique certain number.
填入1~6和加号，使得每行、列内都是数字1~6和一个加号。加号上下两侧相邻格的和，等于左右两侧的和。
Write 1~6 and +, make each Row and Column contain 1~6 and one +. The sum of numbers vertically adjacent to +, equals to the sum of numbers horizontally adjacent to +.
标准数独基础上，涂色格子填入奇数。
Classic rules applied. Additionally, colored cells contain odd numbers.
标准数独基础上，灰色数字有且仅有一个是错误的。
Classic rules applied. Additionally, there's only one false number in grey numbers.
填入1~6，使得每行、列、宫内数字不重复，宫可能是锯齿状的。
Fill the grid with 1~6, make numbers no repeated in each Row, Column and Box. The Box may be irregular.
填入1~9，使得每行、列和每个管道上数字都不重复。
Write 1~9, make numbers no repeat in each Row, Column, Boxes and each pipe.
标准数独基础上，每个涂色区域中是一组连续的数字（可能是乱序）。
Classic rules applied. Additionally, in each colored regions, numbers a group of consecutive numbers (may out of order).
标准数独基础上，如果一个宫内有X个涂色格，那么这些格子里要填入1~X。
Classic rules applied. Additionally, in each Box, if there are X colored cells, they must contain number 1~X.
标准数独基础上，从一个涂色格到另一个涂色格，一定有一条仅通过正交相邻的单元格组成的路径，并且路径上的单元格全部是奇数。
Classic rules applied. Additionally, there must be at least one path from one colored cell to another colored cell which passes orthogoanlly through only odd digits.
