Find out, why I'm so happy today.
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1$\begingroup$ Congratulations! No small feat :) $\endgroup$– ricdesiApr 24, 2017 at 19:01
1 Answer
As already...
shown in the rightmost cell of the second row, for each cell, we need to take the difference of the two cells above it. The resulting configuration is:
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Now we need to
Take the letters corresponding to the numbers in order, yielding: CELEBRATING MY ONE HUNDRED PUZZLES.
(Note that some numbers are missing: namely, 15,24,27,31,33. I guess we simply ignore them.)
Congratulations!