数独在线求解 附带步骤和每步的技巧

https://www.sudoku-solutions.com/

chuck20211006-001

这个难度是easy，但是需要用到两次pointing pair和一次naked pair。

Step 1: Pointing Pair in cells ( A1 , C1 )

 

 

These cells are the only cells in column 1 with the candidate value 6. The candidate must be in one of these cells and can be removed from other cells in box 1.

Actions:

Candidates 6 removed from cells ( C2 )

  Step 2: Pointing Pair in cells ( D6 , F6 )

 

 

These cells are the only cells in column 6 with the candidate value 8. The candidate must be in one of these cells and can be removed from other cells in box 5.

Actions:

Candidates 8 removed from cells ( D5 )

  Step 3: Naked Pair in cells ( D3 , D9 )

 

 

Only these cells can have the candidate values 3,8

Actions:

Candidates 3,8 removed from cells ( D4, D6 )

  Step 4: Hidden Single in cell ( F6 )

 

The cell is the only cell in column 6 with the candidate value 8

Actions:

Cell solved with the value 8.
Candidate 8 removed from cells ( F2 )

 

作者:Chuck Lu    GitHub