I feel like this is the hardest version of solitaire I've ever seen, while normal solitaire is solvable 80% of the time, I feel like this might only be solvable 30% of the time.
I've always wondered whether they're all solvable or not.
I do believe my solve rate is higher than 30%. Maybe not 80% though, but I do beat more than 1 in 2, so around 60% I guess? That doesn't mean the ones I fail at were not solvable though, there's unrecoverable mistakes for sure.