Algorithm X ·
4×4 Sudoku via DLX
un
seel
.com · pick min-column · cover · recurse · uncover
Cells filled
5/16
Step
—
Phase
—
Given clue
Trying
Conflict / backtrack
Locked in
▶ Play
←
→
🔇 Unmute
Reset
Un
seel
.com · Algorithm X