This game is very fun conceptually and this rendition is done reasonably well. The way I was taught this version of solitaire, however, allowed for the removal, IIRC, of any number of cards adding up to ten, including sets of three and (presumably) more. This added considerable depth and strategy, since it allowed for making gambles and devising subtler responses to varying situations. For example, if you were in desperate need of space, you could take off an eight with two aces, even though that would run the risk of leaving up to two nines on the table with no means of removing them. If this was added, this game would be vastly improved.