Yukon is one of the most popular games in Pretty Good Solitaire. Yukon's special feature is its group moving rule: you can move any face up group of cards regardless of sequence.
Yukon has a large number of variations, we will look at 7 of the most interesting ones here.
How to Play Yukon Solitaire
1) Russian Solitaire
Russian Solitaire is the most popular Yukon variation. It is simply Yukon with same suit building instead of alternate color building. This makes the game much harder and more challenging.
How to Play Russian Solitaire
Alaska is another variation. It goes inbetween Yukon and Russian Solitaire by having building either up or down in suit instead of just down as in Russian Solitaire.
How to Play Alaska Solitaire
Moosehide goes the other way - it makes Yukon easier (although Yukon can be won most of the time, games where you get stuck are still common). In Moosehide, you build down by any suit but the same, making it easier than Yukon's alternate color building.
4) Australian Patience
Australian Patience is like Yukon except it has a flat tableau - same number of cards in each tableau pile. It also has a stock and waste pile (which is different from Yukon and the other games above), but the basic concept of moving groups regardless of sequence is the same.
How to Play Australian Patience
5) Ukrainian Solitaire
Ukrainian Solitaire is just like Russian Solitaire, but instead of cards moving to the foundations one at a time, you build 13 card sequences from King to Ace and move them up all together as a unit (this is similar to the game Spider).
How to Play Ukrainian Solitaire
Geoffrey is like Yukon (or really Russian Solitaire) with a different initial tableau layout. It's initial layout looks more like the game Scorpion, which also has the same group moving rules that Yukon has.
How to Play Geoffrey Solitaire
7) Double Yukon
Finally, there are a number of two deck Yukon type games, the first of which is Double Yukon. Double Yukon is just a two deck version of the basic Yukon. More cards add more possibilities.
How to Play Double Yukon Solitaire