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I had to look up what this was! Sounds interesting, but I can see how it gives the brain a bit of a workout!

Yes it is. Most mathematic. A lot of small streams makes a river.
Love to find systems and use them.

The winners of this SBI contest and the new question (Rules/Laws) is here:

https://steemit.com/newbiegames/@bengy/steemitbasicincomegiveawayrulesandlaws-cc8e7sfy9u

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