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3 points
What am I missing here? Some kind of steganography?
2 points
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The patterns are identical, except for where the A is. So, when you overlay the black pattern perfectly, it mostly hides the red pattern.
And then where the A is, the red pattern is colored in such a way that it fills in the gaps of the black pattern, leading to a solidly colored area there.
6 points
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3 points