Perfect Shuffle - NISHIO Hirokazu's Scrapbox (Auto-translated from Japanese)

Perfect Shuffle

https://gyazo.com/c234502dbea6dcccea4c6ab5cc7c2d84

Repeat Perfect Shuffle of 30 cards five times to restore

continued: How many times does it take to undo a perfect shuffle - NISHIO Hirokazu's Hatena Diary

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