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Puzzle 19 - 23 Parts - No red ball in output

Here below is another solution for Puzzle 19 using 24 parts.
This solution satisfies the additional constraint of having no red ball in the output.


Link: jstumble

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You’ve got an unused ramp right above the interceptor.

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You are correct, thanks. I will update the picture and the title.
It’s a copy error.

The correct image is:

Hum… This solution is not bad, but it uses only 3 positions for the bits. The red marbles just avoid the bits.
The following might be an improvement as the reds do switch the bottom bit to get the 4th position.