Signed-in practice

Coach is a lesson game for logged-in users.

Sign in first, answer a quick placement, then train with playable lessons matched to your Sudoku level.

Use Solver instead

Z

ZUDOKU Coach

ZUDOKU Coach placement

Answer a few quick questions, then I will choose the first lesson path for you.

Recommended path

Foundations

We will start with scanning and forced moves.

Question 1/5 20%

Have you played Sudoku before?

Lesson

Rows, Columns, Boxes

Session 0/5

123456789

ABCDEFGHI

Row Column 3x3 Box

Learn how the board is organized.

Current lesson

Rows, Columns, Boxes

Talk

Meet the idea

Sign in to begin a guided lesson.

Proof

The proof appears as you move.

Select the highlighted square to begin.

Path progress

Technique path

Finish each lesson once to unlock a clean app-ready training pass.

Lesson path

First playable Coach lessons

Each card is a small Sudoku decision. The website stores practice locally; later the same lesson records can sync through Firebase and the Android app.