Hello Piyush,

There is no chance to participate directly in CSAB special round 2 without participating in special round 1. If y ou want to know more information about the CSAB special round then you have to check the official website of it. here is the link.

Https://csab.nic.in/cms/Public/Home.aspx

Once you can go through this link and check the business rules. hope it helps you.

thank you.