TAO SUDOKU's clearance conditions
In addition to each row and column, each nine squares
1~9 numbers are not repeated
Also have each letter nine squares
1~9 numbers are not repeated
This is also
The origin of the TAO SUDOKU name
(Three Add One SUDOKU )
( 3 + 1 SUDOKU )

TAO SUDOKU 的過關條件
除了每行每列每個九宮格
1~9的數字都不重複
還要每個字母九宮格
1~9的數字都不重複
這也是
TAO SUDOKU名稱的由來
(Three Add One SUDOKU )
( 3 + 1 SUDOKU

because
Players can decide the number and location of the prompt numbers themselves.
So the representative
The difficulty of the title is determined by the player himself.
If the player solves the problem
Just change the number and location of the original title prompt numbers.
Can re-challenge the topic

因為
玩家可以自行決定提示數字的數量跟位置
所以代表
題目的難度是玩家自己決定的
若玩家解完題目後
只要更改原本題目提示數字的數量跟位置
就可以重新挑戰題目