Game technique · Sudoku
Forcing Chains in Sudoku
Test each possible value of a candidate and follow its logical consequences.
🎮 Play Sudoku →How it works
Test each possible value of a candidate and follow its logical consequences.
Example
If one branch leads to a contradiction, eliminate that assumption. If every branch reaches the same result, that result is forced.
Key point
Test each possible value of a candidate and follow its logical consequences.