Guides

These pages explain the board you are playing. They are written for this game: the button names match the ones on the screen.

Rules

Rows, columns, and boxes, with a diagram that only exists to name those lines.

What a pencil mark is, and when Auto-Clear Notes removes it.

The two placements you can make without guessing.

A cage total on top of ordinary Sudoku.

What Continue Last Game restores, and what it cannot.

Repeated digits, leftover notes, and the three-mistake limit.