•  Click this button to restart the current game from begin. Alternatively, you can press the Ctrl+R key combination. The button is disabled if the undo stack is empty or when an animation is running.
   

You should also consider the following:

• After restart, the game is shown on the gaming table in initial state.
   
• All actions performed in this game are available on the undo stack. To come to the point of your interest, you may replay the game forward, step-by-step or animated. After obtaining that point, you may continue playing with new interactions.