Game technique · Sudoku
3D Medusa in Sudoku
Color strong links between individual candidates, including links within a cell and within a unit.
🎮 Play Sudoku →How it works
Color strong links between individual candidates, including links within a cell and within a unit.
Example
If one color creates a contradiction, discard it and accept the other color wherever the links force a choice.
Key point
Color strong links between individual candidates, including links within a cell and within a unit.