Yukon
About Yukon
Yukon feels like Klondike without the stock: most cards are on the tableau from the start. You can move stacks even when the internal order is messy, as long as the leading card fits the destination.
The main challenge is uncovering face-down cards without creating a pile that cannot move. Empty columns are powerful, but only when you can use them for kings or important sequences.
Alaska is a close Yukon variant that allows building both up and down in the same suit. Yukon is more direct; Alaska gives more flexibility but more ways to trap yourself.