Learn Sudoku on real grids.

Play normally. When you get stuck, the coach shows you where to look and helps you understand the next logical move.

✓ Start free. No account. ✓ You make every move

“I’ll show you where to look.”

Try the coach

Find the next move without guessing.

Start with where to look. Reveal the useful evidence, name the pattern, and see why the move is safe only when you need the complete proof.

Try this on a real puzzle → This explanation comes from the same deterministic solver used in every coached puzzle.

Play a real puzzleStart with a complete grid, not an abstract exercise.

Get guidance when stuckThe coach highlights one useful place and keeps the answer hidden.

Make the reasoning yoursYou make the move, then keep solving the same grid.

Checkable by design

Every coaching message is bounded by facts rebuilt from the current grid.

Verified puzzle logicPuzzles have one solution, and every recommended move comes from the deterministic engine.
Start without an accountPlay and learn locally first. Create an account only when you want cross-device sync.
Learning survives a lost connectionAvailable lessons and local puzzles remain usable offline after they have been loaded.

Lessons, when you want them

Open a short interactive lesson when a move deserves a closer look. Then take the same reasoning back to a full grid.

Choose a technique →

Begin with visible squares and simple checks before learning the technique’s name.

Interactive exercises let you find the square, check the proof, and make the move.

Return to a complete grid and use the same idea with the coach available when you need it.