Entering digits
Select a large digit in the control field and place it one after the other in one or more empty cells:
You can delete incorrectly entered digits in the same way.
Entering candidates
Select a small candidate and use it to mark all fields simultaneously in which the candidate can occur:
You can delete incorrectly entered candidates in the same way.
Help
Choose from four help levels or have the next step explained to you in detail:
As soon as you know the solution, you can enter it.
Training games
Practice a certain strategy by starting matching games with or without guidance:
As soon as you know the solution, you can enter it.