标准数独基础上，涂色格子填入奇数。
Classic rules applied. Additionally, colored cells contain odd numbers.
填入1~7，使得每个宫及每个行、列内数字不重复（有遗漏）。
Write 1~7, make numbers no repeated in each Row/Column and Box. Some numbers will be left out.
标准数独基础上，提示数字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。
Classic rules applied. Additionally, clue shows how many numbers can be seen in this direction, when larger number will hide lower ones.
标准数独基础上，圆圈的周围不能存在圆圈里的数字。
Classic rules applied. Additionally, numbers around circle cannot exist numbers in circle.
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.
填入1~7，使得每行、列内数字不重复。每一组连续的白色格内是一组连续数字（可能是乱序的）。
Write 1~7, numbers cannot repeat in each Row or Column. Numbers in each part of connected white cell form a group of consecutive numbers (may out of order).
标准数独基础上，每个区域内的多位数是平方数（从左到右，上到下观察）。
Classic rules applied. Additionally, numbers in colored zones should be square numbers with order (left→right, up→down).
填入1~5，使得每行、列和每个管道上数字都不重复。作者：Sudoku52
Numbers cannot repeat in each Row, Column, Boxes and each pipe.
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，每条线条上的数字之和等于圆圈里的数字。
Classic rules applied. Additionally, the sum of numbers on each line is the numbers in circle.
