Ninefox Gambit by Yoon Ha Lee

A space opera novel I wanted to like more than I did. In terms of basics it was good, I breezed through it quickly and was engaged the whole way through. But I am left feeling a bit meh now I'm done.

The things people recommended it to me for: diversity, space opera, robots, and maths.
( My tl;dr thoughts on which are, respectively: good, ok, ok, and meh )