O.k. I printed the ratings page and started going through games of potential opponents to determine their rate of play. It is very time consuming and the list will need to be updated regularly as people come and go and ratings change. Then I will send out invitations after checking to see which of my suitable opponents are online. These invitations will be sent one at a time so I do not get more games than I want or have to uninvite people. Then I will wait till they accept or decline. If they decline I will start the process over. Lucky are those players who may simply use the games waiting to find a suitable opponent, even if the opponent doesn't think so.