Pyramide, rules and strategy
An addition-based solitaire game: 28 cards in a pyramid, a stock, and a waste. Remove two free cards whose values add up to 13, or a King on its own. This site explains the exact rules, strategy, and games verified card by card. To play: Pyramide Solitaire, on iPhone, iPad, and Android.
Available on the App Store and on Google Play.

Pyramide at a glance
Pyramide is played alone with a 52-card deck. 28 cards form a pyramid of 7 rows, all face up, with each card partly covered by two cards in the row below. One card goes onto the waste; the other 23 form the stock.
A card is free when nothing covers it. Two free cards are removed together if their values add up to 13: A + Q, 2 + J, 3 + 10, 4 + 9, 5 + 8, 6 + 7. The King is worth 13 on its own and is removed without a partner. The top card of the waste counts as a free card. You win by clearing the pyramid. Each card removed from the pyramid earns 10 points: 280 for a winning game. The rules explain each move in detail, and the strategy explains how to approach the game.
A deal from the app
Here is deal PY1-N-AAAAAAS as dealt by the app. At the start, only the 7 bottom cards are free; R♦ can be removed immediately, and 10♣ pairs with 3♠. Paste this code into the New Game window to play it; a game won in 33 moves is detailed on the Examples page.
Stock: 23 cards; waste: 7 of diamonds. Row 1: jack of diamonds; row 2: 6 of clubs, 7 of hearts; row 3: ace of spades, 4 of diamonds, queen of spades; row 4: 5 of hearts, 3 of diamonds, 6 of hearts, 8 of spades; row 5: king of hearts, king of clubs, ace of diamonds, king of spades, 9 of clubs; row 6: queen of clubs, 2 of clubs, 8 of diamonds, 10 of diamonds, 10 of spades, jack of spades; row 7: 7 of clubs, 10 of clubs, 3 of hearts, 4 of hearts, 3 of spades, king of diamonds, 7 of spades.
Where to start?
The rules
The pyramid of 28 cards, free cards, pairs adding up to 13, Kings on their own, the stock and waste, and scoring.
Strategy
Clear the bottom, remove Kings, count a card’s partners, and keep the waste useful.
Verified games
Actual deals from the app with their codes, including a game won in 33 moves, replayed move by move.
Frequently asked questions
Is every deal winnable? Can you go through the stock again? When is the game lost?
On phone and tablet
The app is played in landscape orientation. It offers a code for each game to replay or share a deal, undo for the last 100 actions, statistics, and 36 languages.

