Ninefox Gambit by Yoon Ha Lee
My rating: 5 of 5 stars
Incredible. Reads like a Warhammer 40K novel written by Ann Leckie; or possibly an epic sword & sorcery tale with dragons replaced by spaceships and magic spells swapped out for elaborate ritual mathematics. Fantastic background, rich settings, intriguing characters. It reminded me of a lot of things, but they were all good things. Highly recommended.