Sherlock Puzzle (Series 2 Episode 1) "This email will save the world"

I was catching up on the Sherlock series 2 the other day on iplayer.

During the "A Scandal in Belgravia" episode Lara Pulver's character Irene Adler shows Sherlock an email containing a code. Irene Adler then says to Sherlock "go on then, impress a girl".. or words to that effect.

Given that I was developing a soft spot for Irene Adler, that was effectively a challenge I wasn't going to miss, so I copied it down, and had a crack at deciphering it.



Fortunately at that point they did a little slow-motion sequence with overlaid animation of letters appearing in front of Benedict Cumberbatch's head, and I was able to pause it before they gave the answer away.

Any apps which would implement a pairwise comparison of "product features" in head to head playoff elimination format?

I have this massive list of "product features" for an app that I am working on, and I am having trouble just making sense of which to look into first.

I thought it would be cool to have an app that would present all the items successively in "pairwise comparison" format, to enable to determine an "implied priority"

A 1000Minds presentation of two contenders in a pairwise comparison format;

The idea being that initially you would start with a rough list and then successively present pairs of these items (e.g. "add X widget feature" vs "improve Y process") to the stakeholders.