Using the Undo button is a great feature in the game that lets you undo your previous moves an unlimited amount of times. You'll find it at the bottom of your menu tab. Many players find that undoing their previous moves to choose new cards helps lead them to win the game and overall victory.
A new feature we added in the Option menu is Show Dead Ends, which when enabled - it will alert you when there are no more unique moves. If you're playing a game but you feel there are no more moves despite the alert not coming on, try using the Undo button to go back to a point in your game where you can make a different move or add cards to the foundation pile.