MERS competition must be open for all players from European countries.

Only players who are residents of EMA member countries are listed in the European ranking systems. A player needs an EMA registration number in order to be listed.

If an EMA member country requires a national membership administration – for players to be able to participate in tournaments – then EMA respects that such countries excludes such players. This does not imply that other countries should have to exclude such players. Players who do not comply with the regulations set by their country, will not enter the EMA ranking list.

There must be at least 16 players from EMA member countries participating (80 players for Mers5); any limitations for the maximum number of players, for instance due to dimensions of the venue, will have to be approved by the EMA.

Tournament format : MERS 1=at least 4 sessions of 90 minutes, MERS 2=at least 5 sessions of 120 minutes (90min for Riichi), MERS 5=at least 8 sessions of 120 minutes (90min for Riichi)