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，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，任意对角相邻的两格数字不同。
Classic rules applied. Additionally, numbers cannot be same with all the numbers around it.
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.
填入1~6，使得每宫内及每行列（三种方向上）数字不重复。每行列宫可能没有包含所有的数字。
Write 1~6, make numbers no repeated in each Box or each Row (in three directions). Each Region may not contain all of the numbers.
标准数独基础上，每一条线条在它经过的每个宫内的每一段，数字之和相同。
Classic rules applied. Additionally, digits along each line have an equal sum within each Box it passes through.
标准数独基础上，如果涂色格是X，涂色格右侧的单元格是Y，则涂色格的下一行之中，数字X在第Y格。
Classic rules applied. Additionally, if A is in colored cell, B is on the right side of A, then in the next Row, A is in the Bth cell.
标准数独基础上，不等号展示了对角相邻两格的大小关系。
Classic rules applied. Additionally, signs point the smaller one in the two diagonal-adjacent cells.
填入1~5，使得行列内数字不重复，每个宫内有所有类型的数字。
Write 1~5, make each Row and Column no repeated numbers. Each box contains all kinds of numbers
填入1~7，使得每行、列、宫内数字不重复。任意两个呈马步的单元格中，不能有相同的数字。
Write 1~7, make numbers no repeated in each Row, column and Box. No two cells that is a knight-step away can contain the same digit.
