Can I create a Tournament?

You can manually do it and just have your friends send challenges. Otherwise, only premium members can create tourneys that use the site tourney options.

Thank you Martin

how can i create a multi-group tournament ? I'm trying but i don't see the option to creat a multi-group ? it says 5 players max or 12 players max

You should be able to do a larger number of players; max is 250 now, but that depends a little on group size. Are you on the default site or v2?

i solved my problem. I need to be at least Platinum member to creat multi group tournament.. That was my problem  ...thanks

Ah, you were platinum when I answered so if you were gold before that would explain it

When i create advanced (multi-group etc) tournament as platinum, but before tournament start, i am downgraded to gold, can i still manage (e.g. start tournament, invite players, modify tournament settings etc) this torunament?

I believe you can but you might ask staff to be sure.

https://support.chess.com/customer/portal/emails/new

tks i will

There are a few (but very easy to accomplish) requirements you need to complete to create a live tournament.

Good