How many coins do you need to move in the diagram on the left to make it look like the diagram on the right?

Guest Jun 19, 2020

#1**-1 **

Only three, I believe.

This is the minimal amount.

So in the center, there is a 7-ball pattern in both...

O O

O O O

O O

Looks like that

So we have for the first one

O O O O

O O O

O O

O

And if we take away those at 10, 2, and 6 o'clock we have

O O

O O O

O O

and if we add the OOOs

we have

O

O O

O O O

O O

O

O O

O O O

O O O

O

O O

O O O

O O O O

Wonderful!

So that's the smallest I can thinjk of.

hugomimihu Jun 19, 2020