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，提示数是这一方向上前若干个数字之和。
Classic rules applied. Additionally, outside clue is the first several numbers' sum in this direction.
标准数独基础上，任意两个呈马步的单元格中，不能有相同的数字。
Classic rules applied. Additionally, no two cells that is a knight-step away can contain the same digit.
标准数独基础上，提示表示这一方向上第一个奇数/偶数。
Classic rules applied. Additionally, the clue shows the first odd/even number in this direction.
标准数独基础上，两个涂色区域中，相同的位置对应的数字一致。
Classic rules applied. Additionally, in the 2 colored zones, same position own same number.
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.
标准数独基础上，每个虚线框框内数字不重复，且提示代表框内数字总和从小到大的排序。
Classic rules applied. Additionally, digits must not repeat in each cages, and the clue is the sums' order in each cage, from the lowest to the highest.
填入1~4，使得每行、列、宫内数字不同。行、列会沿着折线拐弯。
Write 1~4, make numbers no repeated in each Row, Column and Box. Row and Column may turns according to the lines.
标准数独基础上，圆圈内为N，线条上有N个数字与N有相同的奇偶性。
Classic rules applied. Additionally, if the number in circle is N, there are N numbers own same parity with N on the line.
标准数独基础上，箭头格为N，箭头指向N+1。
Classic rules applied. Additionally, number N in arrow cell, N+1 in the direction the arrow points.
