Game Coach
Selected cell: Row 1, Column 1
Candidates: 1, 4, 5, 6, 9
Completion: 26%
Technique Tip: Hidden Single (Column)
1 fits only this cell in the column.
Mini guide
Arrow Keys (↑ ↓ ← →): Move between cells with the keyboard.
Notes (N): Write candidate numbers as small notes in the selected cell.
Hint (H): Fills the selected empty cell with the correct number.
Clear (0/Del): Clears value or notes from the selected cell.
Undo (Backspace): Reverts your latest moves step by step.
