1Klondike Solitaire has been included in every version of Microsoft Windows since Windows 3.0 in 1990, making it the most widely distributed card game in computing history.
2Blake and Gent measured Klondike solvability with the Solvitaire solver in 2019: 81.945% of draw-3 deals and 90.480% of draw-1 deals can be won when every face-down card is known in advance.
3Klondike Solitaire is the most-played single-player card game in the world, carried onto hundreds of millions of desktops by Microsoft Windows since 1990.
4The name 'Klondike' comes from the Klondike region of Canada's Yukon Territory, where prospectors played the game during the 1896 Gold Rush.
5A standard Klondike Solitaire game uses one 52-card deck and deals 28 cards into 7 tableau columns, leaving 24 cards in the stock pile.
6Draw-3 Klondike is measurably harder than draw-1: 81.945% of draw-3 deals are solvable against 90.480% of draw-1 deals, because only every third stock card is reachable on a pass.
7Wes Cherry wrote the Microsoft Windows Solitaire program as an intern in 1989, to teach users how to drag and drop with a mouse. He did not invent the game, which is a 19th-century patience.
