HELP:
Please enter a short description of the problem (for example: unable to make a move)
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A: You can see the listing of all tournament rounds you are playing in by clicking on the "tournaments" button in the menu on the left side of any of GameKnot pages, and scrolling down the page. There is a "withdraw" link available for each tournament on that page.

However please note that it is only possible to withdraw from the future tournament rounds. If the round had already started (i.e. the games have been started), it is no longer possible to withdraw.