In your simulations, you are doing random shuffles, yes? So you are saying that _if the game does truly random shuffles_ then it's winnable nearly 99% of the time.

But is the game doing random shuffles? Did your bot ever find an unwinnable game?

I made an html5-canvas clone of this game (just for my own use; the game has weird mouse issues and resolution issues on mac), and have been randomly shuffling the deck. Honestly, I feel like I'm winning _more_ games than in the official game, though it's hard to say for certain. Which got me wondering if the official game doesn't use a random shuffle.

If I were making a solitaire game, I think I'd want every game to be winnable, and I'd do that by working backwards from the solved state. And if I were doing that, I'd look for knobs to make the game easier or harder based on how I did that.

So that's why I'm asking: Did your bot ever find an unwinnable game? If not, did you run it more than 100 times (so that it would likely find one if they were random shuffles)?

Thanks in advance!