Turing Tumble Community

Fountain of Colors

“Fountain of Colors” - Level 4:
Create a mechanism that causes the following effect: you only accumulate blues, but if you send a red when the blue is towards the center of the board, you only accumulate reds. And if you start again with a blue, then a red, etc. The fountain continues but changes color.
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Turing well, the answer is in the first reply.
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2024