Yukon Solitaire Games
The Yukon games look like Klondike, but there is no stock: all 52 cards are dealt into seven columns from the start. Their big rule is that you can move any face-up card together with everything on top of it, even when those cards are not in order. That opens many more moves than in Klondike, and also many more ways to get stuck.
How the three games differ
The deal is the same in all three. Only the building rule changes. In Yukon Solitaire you build down in alternating colours, so most cards have two possible places. In Russian Solitaire you build down in the same suit, so each card has only one place, and it is one of the hardest games here. Alaska Solitaire also builds by suit, but both up and down, which gives back some of the choices.
Which one to start with
Start with Yukon Solitaire. When you are used to moving whole groups of cards, try Alaska Solitaire, and keep Russian Solitaire for when you want a real challenge. If you enjoy moving groups of cards and building by suit, the Scorpion games are a good next step.