Square Off is a service mark of Prodigy Services Corporation. Prodigy is a registered trademark of Prodigy Services Corporation. My score showed up, but it wasn't my highest for the week. I just upgraded to a faster modem. At the end of every game it tells me to do better next time.
All scores achieved in a given week are contenders for being on the high score list.
That gives you up to 7 separate and distinct chances. But because only one ID per player is selected to appear on each of the 3 lists, only your top score in each of the three difficulty levels is really a contender. The only time scores will be posted that AREN'T your highest is if technical problems prevented some scores from being included in the ranking process. This has happened several times in the past, and is beyond my control. When it happens, there is usually no practical way to recover those scores.