Thank you!

It's more than that. I'm claiming that the shuffle-based games are actually not provably fair. This is a direct attack against the algorithm.

Here's why:

• On a mid-range CPU (like a Core i5), a casino can calculate a single arrangement in about 17 hours.
• Since it is not looking for the "ultimate" arrangement (just a better one), it can continuously search one arrangement at a time and update its "master list" of cold decks that result in a higher house edge.
• These deck arrangements, over time, will always perform better.

I have written a new implementation that I will share here soon. I won't go so far as to say that it is "perfect" (since there is no perfect crypto), but maybe "next generation"?