Taking a standard 52-card deck of playing cards (without Jokers), deal one upturned card on the left of your playing area, then six downturned cards (from left to right). On top of the downturned cards, deal an upturned card on the left-most downturned pile, and downturned cards on the rest until all piles have an upturned card.
This is a very difficult variant that is played with no foundations. The game ends when there are 4 complete stacks of cards on the tableau. It was invented by a user on reddit.