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I have known about these yellow dots for years, but it never occurred to me that DARPA would have used color printers for this competition.

I need to fire up those 'orthogonal thinking' neurons!

This is amazingly clever. Congratulations on the win! Would you consider posting something about the process you took?

We have been meaning to do that but have been distracted by real life. Hopefully we'll get it together soon. I'll post a link on HN when we do.

I did the first two puzzles. I skipped to the fourth when I saw different colored inks on a hunch that the names were in different colors. I wrote an algorithm to pick out the different colors, but got too burnt out to finish. I felt bad when I saw my hunch was right. Well done using the yellow dots, that was quite a novel approach. Congrats on your win.

Very clever. Kudos on shipping a new rev of Word Lens, too.

That's an absolutely brilliant hack. I was playing with those challenges a bit, I've read about those yellow dots multiple times, but it not once occurred to me to use them. Well done.