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Solitaire Stack is not a FreeCell clone and it is not another Klondike-focused site with a reskinned engine. It is the place where the solitaire tradition actually lives under one roof. We publish 26 distinct variants — cascade games, discard games, patience games, two-deck games, and the oddball specialists — and we give each one the same editorial depth: researched win rates, canonical rules, honest difficulty ratings, and strategy that has been tested at the table. You can think of the site as a reference library that happens to be playable.

What we do differently comes down to four decisions. First, we publish deeper supporting content per game than anyone else on the open web — how-to pages with illustrated boards, strategy guides with worked examples, and history pieces sourced from Parlett and the old Hoyles. Second, we put researched win rates next to every variant, show the methodology, and mark estimates as estimates. Third, every article carries an editorial byline from one of our five desks (Strategy, History, Rules, Research, or the Editorial Team) so you know who wrote it and what they are accountable for. Fourth, we do not run ads during gameplay. Ads go below the fold, outside the play surface, and never interrupt a deal in progress.

Who is this for? Players who want variety beyond the three games Microsoft shipped. Players deciding which variant fits their mood tonight. Writers, researchers, and classroom teachers who need reliable rules and statistics. Families who want something safe, fast, and ad-lite to hand to a grandparent or a kid. If any of that sounds like you, our about page explains the broader project, and the authors page introduces the desks that actually write the content you read here.

Solitaire is not a single game. It is a family with at least four distinct branches: the cascade tradition (FreeCell, Klondike, Yukon), the packer tradition (Spider, Scorpion), the discard tradition (Pyramid, TriPeaks, Golf), and the patience tradition of matching and pairing (Gaps, Accordion, Clock). Below is a curated taxonomy of the variants we cover most deeply, with researched win rates drawn from our Research Desk and published sources.

The most common message we get is some variation of: "I don't know which one to play." Twenty-six variants is a lot, and the standard answer — "just try a few" — is unsatisfying if you have twenty minutes and want to spend them playing, not browsing. So here is a decision guide organized around what you actually want out of the next hour.

Solitaire is roughly 250 years old, give or take a decade. The earliest documented patience games appeared in late-eighteenth-century northern Europe, most likely in Germany or Scandinavia, where they circulated in hand-copied rulebooks before the first printed collections arrived. The German term "Patience-Spiele" — patience games — is the oldest label we have, and the tradition traveled from there into France, England, and Russia during the early nineteenth century. By the time Lady Adelaide Cadogan published her Illustrated Games of Patience in the 1870s, dozens of variants already had settled names and stable rules.

One persistent story deserves careful handling: the claim that Napoleon invented or popularized patience while exiled on St. Helena. David Parlett, whose Oxford Guide to Card Games remains the most careful secondary source in English, treats this as legend. There is no contemporary evidence Napoleon designed a game, and the variants sometimes attributed to him (Napoleon at St. Helena, St. Helena, and others) are almost certainly nineteenth-century inventions named for his memory rather than his hand. Some patience games do have French names and likely French origins, but Bonaparte himself is a marketing embellishment.

The real fork in the family tree came with Klondike, which took its name from the Yukon gold rush of the 1890s. The game existed before the rush under other names, but the new label stuck, traveled back to the eastern United States, and — crucially — became the default version of solitaire people taught their children. By the mid-twentieth century, "Solitaire" meant Klondike in most English-speaking homes.

FreeCell belongs to a different lineage. The game traces back to Paul Alfille, who implemented it on the PLATO computing system at the University of Illinois around 1978. Alfille was building on older patience variants (most notably Eight Off and Baker's Game), but his decision to expose all 52 cards and allow four free cells created a new kind of puzzle. The Microsoft Entertainment Pack shipped a FreeCell client in 1991, and Windows 95 bundled it. That single distribution decision pushed FreeCell from a university curiosity to a hundred-million-player game inside a decade.

Spider is older than FreeCell and more argued over. Parlett flags multiple competing origin stories, none conclusive, and the game existed in print collections by the mid-twentieth century. Windows ME shipped Microsoft Spider in 2000, which did for Spider what the Entertainment Pack did for FreeCell. Spider has since branched into Scorpion (looser movement rules) and Wasp (shorter deal), and the three-suit-count variants (1, 2, 4) are a Microsoft-era innovation that became canonical.

The discard family — Pyramid, TriPeaks, Golf — sits on a different branch entirely. These games do not build sequences; they extract cards from a fixed layout by matching values. They play faster, reward pattern recognition over planning, and have their own regional traditions (Pyramid in Europe, TriPeaks and Golf in the twentieth-century American tradition).

Why does variety matter? Because each branch tests a different skill. Cascade games train sequencing and long-horizon planning. Packer games train suit management under pressure. Discard games train pattern recognition and probabilistic thinking. Patience games train memory and risk assessment. A player who only knows Klondike has touched one branch of a much larger tree — and the other branches are where the interesting puzzles live.

Most people learn solitaire the way they learned to swim: dropped into Klondike Draw 1 and told to figure it out. That works, eventually, but there is a better path. The ladder below moves from gentlest to hardest, and each rung teaches a concept the next rung builds on. You do not have to climb it in order, but if you want to get genuinely good at solitaire, this is the path we would recommend.