Look at the size of the blocks along the diagonal break
They are smaller after the rearranging of the pieces. The total area missing is that one extra block he took out.
Something along those lines anyway
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aMac updated his sig, Tue 1 Oct 2013, 11:51,
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They aren't obviously smaller as far as I can see...
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Enzyme is powered by sunlight, Tue 1 Oct 2013, 11:58,
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They are a 5th of a block smaller, each.
that is all.
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LordManley twitter.com/LordManley, Tue 1 Oct 2013, 12:13,
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The word 'obviously' is key here!
Our eye finds it hard to spot that kind of small difference in a regular pattern, especially when it's broken up along a line.
There are other similar cut-and-rearrange paradoxes that break the missing square into a long thin diamond shape as well, but this one is particularly neat.
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flatfrog Staring vacantly into space, Tue 1 Oct 2013, 12:24,
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