How We Built a Klondike Solver to Bring Premium Features to HTML5 Solitaire

For years, Microsoft’s Solitaire Collection set the gold standard for digital card games. Features like guaranteed solvable decks and selectable difficulty levels gave players a sense of fairness and challenge that most web-based solitaires simply couldn’t match. At Catafractum, we asked ourselves a simple question: why shouldn’t HTML5 solitaire players enjoy the same premium experience? The answer led us down a fascinating technical path: developing our own Klondike solver from scratch. ...

September 5, 2025