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，箭头格内数字是这一方向上的摩天楼数。
Classic rules applied. The arrow cell is the skyscraper number in this direciton.
标准数独基础上，O、E、B、S分别表示这一方向上前两格是奇数、偶数、大数（5678）、小数（1234）。Classic rules applied. Additionally, O/E/B/S shows the first two numbers on this direction is Odd/Even/Big(5678)/Small(1234) numbers.
标准数独基础上，本题中红色部分的三位数与黄色部分的四位数的乘积，等于蓝色的六位数。所有多位数都使用8进制计数法，并且都是从左到右、从上到下的方式形成的。Classic rules applied. Additionally, the 3-digit number of red cells, and the 4-digit number of yellow cells, their product is the 6-digit number of blue cells. All the multi-digit numbers are read from left to right, up to bottom, and they are all in the Octal.
标准数独基础上，相同颜色的圆圈格内，圆圈越大，数字越大；相同大小的圆圈里，不同颜色的格子必须是不同的数字。
Classic rules applied. Additionally, in circle cells with same color, larger circle contains larger numbers. Circle cells with same size and different colors should contain different numbers.
填入1~7，使得每行、列、宫内数字不重复。有斜线的格子里，上方数字小于下方数字。
Fill 1~7 into the grid, make numbers no repeated in each Row/Column and Box. Additionally, a cell with slant line should contain two numbers, with the upper one smaller than the lower ones.
标准数独基础上，数字从圆球开始沿着线条逐渐增大。
Classic rules applied. Additionally, numbers increasing from bulb on each thermometer.
标准数独基础上，柠檬中心的两个数字组成了一个从左到右、从上到下的两位数，它等于柠檬线条上所有数字的和。
Classic rules applied. Additionally, the two numbers in the center of the lemon forms a 2-digit number (from left to right, up to down), and it equals to the sum of all the numbers on the lemon lines.
标准数独基础上，涂色格数字大于相邻的白色格内的数字。
Classic rules applied. Additionally, numbers in colored cells are larger than numbers in white cells adjacent to it.
标准数独基础上，箭头指向其相邻格中，所有的最大数字。
Classic rules applied, arrow points all the max number adjacent to that cell.
