Online solving using Penpa is enabled in this contest. Make sure to read the F.A.Q. on online solving before starting the contest.
Supported browsers : Latest versions of Google Chrome, Microsoft Edge, Opera. At this point, we do not support Firefox.
Indian participants must start the round between 12/12/2021 9:00:00 AM and 12/12/2021 9:15:00 AM to be considered for official rankings.
The official period for "ISC Finals 2021 - Round 1 - The Archetypes" is over. However, you can participate unofficially using this link.
Your timer will start when you click "Start ISC Finals 2021 - Round 1 - The Archetypes" — then you will have 55 minutes to solve and submit your answers.
A timer will be shown the answer page with the remaining time.
If you have any questions or doubts or suggestions, please ask in the forum.