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1~3，使得每行、列、宫内都是1~3及一个空格不重复。外提示是这一方向上的摩天楼数，空格是花园，不计入空格的高度。 Write 1~3, make numbers no repeated in each Row, Column and Box, and each region contains a blank cell. The outside clue is the skyscraper numbers in this direction, the blank cell is "Gardern" with no height.
标准数独基础上，盘面内有一些烤串，这些烤串的摆放方向可能不同，但都包含着相同顺序的四个数字。 Classic rules applied. Additionally, straight skewers are placed in the grid, their directions may be different, but they contain a same 4-digit number in order.
标准数独基础上，任意两个在线条上相邻的单元格，其中一格必定是另一格的倍数。
Classic rules applied. Additionally, each two numbers next on line, one is the multiple of the another one.
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.
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，相同的字母表示其周围的数字对相同，不同的字母表示其周围的数字对不同。
Classic rules applied. Additionally, same letter shows same number pairs around it, different letters show different number pairs around them.
标准数独基础上，每种颜色的区域内数字是一组1~6不重复。
Classic rules applied. Additionally, numbers 1~6 cannot repeat in each colored region.
标准数独基础上，如果某行/列的第一格是X，则该行/列的第X格是外提示里的数字。
Classic rules applied. Additionally, if the first cell is X in a Row or Column, the Xth cell is the outside clue.
标准数独基础上，涂色的单元格组成了若干个三角形（上方一格，下方两格）。每一个三角形结构中，顶端的数字是下方两个数字的和或差。 Classic rules applied. Additionally, the colored cells form several triangles (one cell above and two cells below). In each triangle, the number in the top cell is the sum or difference of the two numbers in the bottom cells.
