标准数独基础上，如果箭头格内是N，则箭头方向上第N格是6。
Classic 6x6 rules applied, additionally, arrow cells with number N, must point to 6, with 6 on the Nth cell on it's direction.
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，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，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.
填入1~6，使得每行、列、宫内数字不重复，宫可能是锯齿状的。
Fill the grid with 1~6, make numbers no repeated in each Row, Column and Box. The Box may be irregular.
标准数独基础上，每条对角线上数字应当尽可能的重复。
Classic rules applied. Additionally, numbers must repeat as more as they can on each diagonal.
标准数独基础上，红色线条上相邻两格数字连续。
Classic rules applied. Additionally, numbers next on the red line are consecutive.
标准数独基础上，如果箭头格内是N，则箭头方向上第N格是6。
Classic 6x6 rules applied, additionally, arrow cells with number N, must point to 6, with 6 on the Nth cell on it's direction.
标准数独基础上，提示表示相邻两格数字的比值。
Classic rules applied. Additionally, the clue is the ratio of numbers next to it.
标准数独基础上，提示是其周围数字行列式运算后的结果。
Classic rules applied, the clue is the result of the determination.
