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Day: 18 April 2026

FlipFlop Solitaire's Deck-Generation Secret

I enjoy a mobile game called FlipFlop Solitaire, which provides a few thousand pre-seeded decks that are guaranteed "winnable". This blew my mind for a little while - how can you be sure that these shuffles are all winnable? But then I worked out a way to achieve exactly that result... by thinking in reverse!
- Article
- posted 18 April, 2026

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