Two passes through the Stock are allowed as per Politaire. Anything that makes these tricky games of Solitaire more winnable is good for me.
Some versions don't display the cards horizontally in the Waste pile, preferring to stack them with only the top card visible. I prefer to see all the cards in the Waste pile (although only the topmost card can be selected).
It makes the game easier, and I think visually more appealing.
I've rated this one as just about do-able. In other words I can win it occasionally.
Forty and Eight, Forty Bandits, Forty Thieves, Thieves of Egypt, Three Pirates