Sources and verification

Sources consulted

• Gargantua (card game), Variations section (new tab) (Wikipedia, in English): the two-deck Klondike family: 9 columns, 8 foundations built up by suit from ace; Harp is described there as another two-deck version in which the stock can be dealt only four times, whereas the app allows unlimited passes
• Klondike (solitaire) (new tab) (Wikipedia, in English): single-deck Klondike rules, from which Easy Harp takes its stepped layout and alternating colors
• Glossary of patience terms (new tab) (Wikipedia, in English): solitaire terminology: stock, waste, foundations, columns
• Solitaire (patience) (new tab) (Wikipedia (in French)): French names of the game (solitaire, réussite) and origin of the word Klondike

Links accessed on October 30, 2026. The rules described on this site are primarily those of the Easy Harp app, as read in its code.

How the examples are verified

Before each publication, a program checks the 3 example deals and every number on the site:

• the deal is recalculated from its game code, using the same shuffle as the app, and compared with the deal produced by the app's code;
• 104 cards, each present twice (two 52-card decks), columns of 1, 2, 3, 4, 5, 6, 7, 8 and 9 cards, 59 cards in the stock;
• every move in the games is replayed and must be allowed by the app's rules; the game must end in a win;
• the score and the number of actions, draws and recycles are recalculated and compared with those of the app;
• the rules cited (one card at a time, empty columns, foundations, stock, scoring, daily deal) are checked against the app’s code.

Strategy tips are presented as advice, separately from the rules. Figures from published sources are attributed to their sources and do not describe the app. Found an error? Write to us through the contact page.