I am not affiliated with this event and nothing I write is authoritative for it.

It looks like there are two "Hacker Jeopardy" contest: one "Day" and the other "Night" but they have the same description.

If they really should be treated as separate contests with Separate forums, contact your CVE Goon and get them to relay this to me. Until then, one forum for both:

Hacker Jeopardy - Day:
Originally posted by details
Back for its 22nd year, it's HACKER JEOPARDY! The biggest, longest-running, baddest show in DEFCON. Non-stop action Friday and Saturday nights with four rounds of three teams answering Hacker trivia while earning bonus points for every beer consumed. Tons of swag, lots of laughs, and the bar carts will be there in force. WARNING: Adult themes and language -- leave the kids and the nuns at home.
Hacker Jeopardy - Night:
Originally posted by details
Back for its 22nd year, it's HACKER JEOPARDY! The biggest, longest-running, baddest show in DEFCON. Non-stop action Friday and Saturday nights with four rounds of three teams answering Hacker trivia while earning bonus points for every beer consumed. Tons of swag, lots of laughs, and the bar carts will be there in force. WARNING: Adult themes and language -- leave the kids and the nuns at home.
The site URL they provide appears to redirect back to the forums for this contest. As of the writing of THIS post/thread, it redirects web browsers to the Hacker Jeopardy forum for DEF CON 23.
Site: http://www.hackerjeopardy.org/
Twitter: https://twitter.com/HackerJeopardy