You may try to solve the problems as many times as you like. Your solutions are stored in the database and you may pick an earlier solution as a starting point for a new one.

The current tasks use an example database, described here.

You may use the training program even if you have not registered for the course.

Enter your Identifier: Password:

You must use a unique identifier to identify your arswers. You may select what kind of identifier to use: your user account identifier, your student number, or something else. You should use a password to make the identification more secure. Do not use your user account's password as a password to this system. Thge use of a password is not necessary but it is highly recommended. You NEED NOT give the password when you log into the system for the FIRST TIME. If you want the credit points you must give your personal number (Finnish social security number) in the registration page.