I am the author of Cracking PI Cracking Random. I have worked extensively with Zumma's System Tester. There is a near precise flat bet advantage: .08333 over the 15k trials. I discuss it in my site: CrackingPi.com. I'll answer any questions you may have.
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Please read over my challenge once again and if you understood it, try to play number 3 and beat it with any well-defined method.