In your special case I would try doing the round robin once including all teams. Wikipedia article with implementation details. If you want everyone to play everyone twice just do the same again. The entire round-robin competition is finished when the players sit in their original places.

After the first round everyone but the hub move one chair forward and the white/black (home/away in sports) order is switched. The tournament starts by having players facing each other playing against each other. One of the players is designated as a 'hub' (for a want of a better word). The idea is to divide the players to the two sides of a table. Continued abuse of our services will cause your IP address to be blocked indefinitely.There is a pretty straightforward system used in e.g. Please fill out the CAPTCHA below and then click the button to indicate that you agree to these terms. If you wish to be unblocked, you must agree that you will take immediate steps to rectify this issue. If you do not understand what is causing this behavior, please contact us here. If you promise to stop (by clicking the Agree button below), we'll unblock your connection for now, but we will immediately re-block it if we detect additional bad behavior. Overusing our search engine with a very large number of searches in a very short amount of time.Using a badly configured (or badly written) browser add-on for blocking content.Running a 'scraper' or 'downloader' program that either does not identify itself or uses fake headers to elude detection.Using a script or add-on that scans GameFAQs for box and screen images (such as an emulator front-end), while overloading our search engine.There is no official GameFAQs app, and we do not support nor have any contact with the makers of these unofficial apps. Continued use of these apps may cause your IP to be blocked indefinitely. This triggers our anti-spambot measures, which are designed to stop automated systems from flooding the site with traffic. Some unofficial phone apps appear to be using GameFAQs as a back-end, but they do not behave like a real web browser does.Using GameFAQs regularly with these browsers can cause temporary and even permanent IP blocks due to these additional requests.

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Gaming ladder and tournament scripts