Game technique · Sudoku
W-Wing in Sudoku
Two cells with the same two candidates can be linked by a strong link for one candidate.
🎮 Play Sudoku →How it works
Two cells with the same two candidates can be linked by a strong link for one candidate.
Example
The other candidate must occur in at least one end cell; remove it from any cell seeing both ends.
Key point
Two cells with the same two candidates can be linked by a strong link for one candidate.