One-Deck game · Game rules

Doublets

Also known as Double or Quits

Goal

Move all cards except the four Kings to the single foundation.

How to play

A card is dealt to each of eight separate piles, arranged in a square shape. The bottom-most pile is the foundation, and the remaining seven piles are reserves.

The base rank for the foundation is determined at game start, and it builds up by doubling the rank ignoring suit:

A, 2, 4, 8, 3, 6, Q, J, 9, 5, 10, 7, A, repeat...

The 7 reserve piles are automatically filled from the waste or talon.

Kings are blocking, therefore all Kings in the first 8 cards are put at the bottom of the talon during game start.

New to solitaire? A few useful terms
Tableau
The main playing area, usually arranged in columns or piles.
Foundation
A destination where cards are collected in the order required by the game.
Stock / talon
Cards waiting to be dealt. A game may allow one pass or several.
Waste
A pile receiving cards turned over from the stock.
Reserve / cell
A holding area. Its capacity and movement rules depend on the game.
Redeal
Another pass through the stock or a redistribution of cards, as specified in that game’s rules.

Game-rule reference adapted from PySolFC documentation, licensed under GPL v3 or later. References describe the game’s mechanics.