I beat Assassin's Creed: Brotherhood about a week ago, but I've been spending some time doing side quests, hunting for items and generally getting all of the achievements that I missed during my playthrough. Brotherhood, like the last game, has a subplot where you search for glyphs left by Subject 16 and solve vaguely Dan Brown-inspired puzzles to unearth a conspiracy. One of the most frequent recurring puzzles, in both games, is the code wheel. Here's the one that appeared in the tenth and final rift:

If you haven't played the Assassin's Creed games and don't understand how this puzzle works, let me make it incredibly simple: you need to look at the sequence of numbers represented in the outer wheel, figure out the pattern, and use that to determine the two missing integrals. So, the sequence is as follows:

2 3 5 8 13 21 24 45 ? ?

So... what the hell is the pattern? The first six numbers seem to represent the Fibonacci sequence, in which the next number in the sequence is determined by adding the previous two. It's a little weird that it's missing the two ones at the beginning, but what's even weirder is that the pattern goes haywire after 21, jumping forward by only 3 and then making the massive leap to 45.

I studied this forever and couldn't figure it out, and I'd made it this far in both games without ever looking up a solution online. Finally, I caved. See if you can figure it out before I reveal the answer.

...

Are you ready for this?

The pattern is to multiply the tens digits in the previous two numbers, and then add the ones digits. So how do we get 24? Look at the previous two entries, 13 and 21. Multiply the tens digits. 1 x 2 = 2, therefore the next entry will start in the 20s. Then add the ones digits. 3 + 1 = 4. Hence, 24. Continue to apply this pattern and you get your solution:

I think what I ultimately don't like about this puzzle is its use (intentional or not) of the well-known Fibonacci sequence as misdirection. I get the sense that most players, like myself, will focus largely on how the numbers from 24 onward relate to the Fibonacci sequence rather than whether or not this just happens to be an entirely separate pattern. It's a very tricky puzzle, to be sure, but I kinda feel like Ubisoft was trying to be a little too clever for their own good. I don't feel guilty for looking up the solution.