Black Widow Solitaire is the easiest variant of Spider Solitaire.
This means that it is playable!
It takes a long time. It is also enormously satisfying.
A sequence of cards can only be moved from the Tableau to the Foundations when complete (King to Ace). This is done automatically.
Beetle, Black Widow, Scorpion, Scorpion 2 (Easy), Spider Solitaire, Spider Solitaire (One suit), Spider Solitaire (2 Suit), Tarantula Wasp