From member.koobits.com main page, select Multiplayer to access Peer Challenge.
Each user can send or accept 3 peer challenges per day.
Opening Hours: 6am to 10pm daily
You may select either of the following:
- Recent opponent, or
- My Classmate, or
- Random challenge
Then click Start the Challenge, complete all the questions, and click the Submit button to finish.
Note: Please make sure you do not leave any question(s) unanswered. You will not be able to do change your answers after submission.
To accept challenges from your friend, click View.
Click Accept to start the challenge, complete the questions, and submit.
Or, you can Reject a challenge before it expires and it will NOT forfeit one of your 3 daily chances. The opponent will earn the points based on correct answers. 
Alternatively, you may also select Incoming to accept peer challenges from friends.
Once the opponent accepted and answered, the final result will be shown in History and you will see who wins and how many points earned. 