Basically, a round-robin format is only needed to have fun in a tournament, not to determine the strongest players in a group, as fewer rounds are needed in a Swiss-system tournament. Therefore, the group format will depend on the number of participants. I suggest not rushing the start of the tournament; maybe more people will join, and then we can decide. P.S. By the way, I recalculated the players; if we count Moza, there are already 20: 18. sir_moz "Magic" 19. XREH "Might" 20. ekzekutor "Magic" So, there are 10 in Might and 10 in Magic. Therefore, a pure round-robin format would definitely be inappropriate here; 9 rounds are too long and unnecessary.