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Most solitaire games shuffle a deck and hope it's solvable. This collection runs a solver in the background before dealing, and only shows you hands that are verified to have a winning path through them. The table tells you when a deal is guaranteed solvable, and if you still lose, a surrender option will play out the correct winning line for you to study, rather than just ending the round. For a genre where an unsolvable Spider or Klondike deal is a common and quietly frustrating experience, guaranteeing solvability before the cards are even shown is a meaningful departure from how the games are usually built.
The eight games themselves cover most of the ground solitaire has to offer. Klondike, FreeCell, Spider, Yukon and Scorpion all use the same basic goal of building foundations from Ace to King, but each restricts card movement differently — FreeCell's four free cells versus Yukon's ability to move any card regardless of sequence versus Scorpion's stricter same-suit rules are genuinely different puzzles wearing similar layouts. TriPeaks and Golf instead ask you to clear the table by chaining cards one rank up or down from an exposed card, and Pyramid clears pairs that sum to thirteen. Having all eight behind one menu means the collection doubles as a decent introduction to the wider solitaire family for anyone who has only ever played Klondike.
What sets this build apart even further is how much it tracks. Win rate is reported with actual statistical confidence intervals rather than a raw percentage, your first fifty games are compared against your most recent fifty to show whether you're improving, a six-month calendar logs every session, and your efficiency is measured directly against the solver's own optimal solution. Daily challenges run per game with their own streaks, plus a weekly challenge spanning all eight variants. Cosmetic unlocks — card backs and table themes — come from playing rather than from a shop, and progress carries across devices rather than resetting per browser.
The collection also commits to no advertising interruptions mid-game, unlimited undo, and hints that explain the reasoning behind a suggested move rather than just highlighting a card. Full keyboard control is supported too: arrow keys move focus between cards and piles, Enter or Space plays the focused card, Z undoes, P triggers a hint, N deals a new hand, and Escape closes any open panel, which makes the whole collection playable without touching a mouse at all.
It runs free in the browser on LemonArcade, no download or account required, on desktop and mobile alike. Session length ranges enormously by game — a Golf or TriPeaks round can be over in two minutes, while a difficult Scorpion or Spider deal can run much longer — and because deals are pre-verified as solvable, difficulty here comes from your own planning rather than from the game dealing you an unfair hand. That makes the whole collection equally comfortable as a two-minute break or a longer session spent chasing a daily streak across all eight variants.