There should be an "Undo" button for the new solitaire game
There are times when you wish you could change where you put (or did not put) a card. There are times when you would like o change your selection of where cards go. An undo button could do these things and more. It would make solitaire a lot more enjoyable to play. It is a great addition to the repertoire and is very addicting to play as is. This is an enhancement that could make it "over the top" to play.

An “undo last move” option is being added in v1.0.42.
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The_Sacrifice commented
That would work BW it definately would have to be limited
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oBADWOLFo commented
I would think an undo "last move" would be enough, and would not allow for some one to go back to the beginning as David said, you could also limit it to 3 undo last move a game or something?
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The_Sacrifice commented
It would have to be a limited undo button I think, if you were allowed to undo how many ever you wanted. Then it would ruin the game in my thoughts because then you would be able to notice you didnt win that game near the end and go back to the beginning and retry it until you won, I know that all games wouldnt work like this but enough I think it would not be a good idea. After playing for years I think I want to retract this statement and would like to see a undo button all the way to beginning lol