Fourteen piles of just two cards apiece look gentle, but this Block cousin plays tough, one careful card at a time.

Barricade B Solitaire is a two-deck, slightly gentler sibling of Block Solitaire, created by Richard Mechen and Thomas Warfield. Don't let "gentler" fool you, it's still a tough one. Fourteen tableau piles hold just two cards each, and every card is dealt face-up, so you can see the whole layout from your first move.
There are two solitaire games called "Barricade" that are only distantly related to each other, this one and Barricade A Solitaire. Barricade B turns up in Pretty Good Solitaire, though I haven't found a rules page for it anywhere else online.
If you like tough, one-card-at-a-time stacking puzzles, Barricade B will keep you busy for a while.
If you run into anything odd or have an idea that would make the game better, please contact me.
Enjoy!
There are eight foundation piles.
Any ace can be placed on an empty foundation pile.
A card joins a foundation pile only if it's one rank higher than the pile's top card and the same suit, so the only card that can land on a queen of clubs is the king of clubs. Each pile holds at most 13 cards.
The top card of any foundation pile can be moved back into play if another pile will take it.
Fourteen tableau piles hold two cards each, all dealt face-up.
A card joins a tableau pile only if it's one rank lower than the pile's top card and the opposite color, so a seven of diamonds can only take a black six.
Any tableau card that isn't covered by another card is free to move to the foundation or another tableau pile.
An empty tableau spot is refilled immediately from the stock. Once the stock runs out, any card can fill an empty spot.
Only one card moves at a time; you can't move sequences.
The stock holds whatever cards are left over after the deal.
You can't deal from the stock by hand; its cards only come out to refill empty tableau spots.