Use "obscurities" in a sentence

1. Absentees As far as collectibles go, the Absentees epitomizes the obsession with Killed By Death type obscurities

2. Indeed the account of how mathematicians stumbled, groped their way through obscurities, should give heart to any tyro in research.

3. Finally, a few more observations about Amendments Nos 14, 13 and 16. We have already seen that we must adhere as closely as possible to the text of the BLU Code in order to counteract distortion of competition and obscurities.