Code : rBrrBBBrrrrrBBBBBBBB
1 / 1 / 2 / 3 / 5 / 8 on the board.
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very hard.
That was soooooooo hard the gears don’t work for me
I’ve found an easier and simpler solution for the fibonacci reverse code.
This is the link from ‘Tumble Together’: https://tumble-together.herokuapp.com/?code=C48B1CB0A4C3BA0A0C3A2A1A2B95A0A0A0A2A5A1A1A1A2A3A0A0A0A0A6A6A0A2A1A7A6A0A3A0A0A6A0A6A0A1A0A1A0A1BE6E_UU (trigger right to start)
In your solution are two unneccesary crossovers.

Everything marked can be removed
@buddha, thanks for figuring this out. I revisted this idea lately, and I have found another way of getting the Fibonacci, this one starts with blue, unlike my previous solution, and uses less bits and crossovers, but more gearbits: https://tumble-together.herokuapp.com/?code=C3C2CB3A2A1A1B95A1A481A1A5A1A0A4A5A0A1A1A1A591AB1A0A1A0A0C6C2A1AB0A1A0A2A0A0C6A2A1A1C0A1A7A0K_UU
