- A player may only knock if his un-matched cards (Deadwood) equal 10 points or less (Varies in Oklahoma. Please see Oklahoma rules)
- Once you have reached a Deadwood of 10 or less, the knock button will automatically appear in the bottom left corner of the screen where your profile picture is usually displayed.
- The player is never forced to knock and may choose to carry on attempting to further reduce their Deadwood total
