There are white or black squares on the right hand side of each diagram which tells you which side's turn it is. And the objective for all of them is to find the best possible next move.
700 Diagrams of Chess
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The thing that's confusing me is how ambiguous the puzzles are. I plugged the first one into an engine and it seemed like no tactics were displayed, but it was positional. No solutions either. 
Mar 1, 2018
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#4
This may be an excerpt of the diagrams only from a book that contains copyright protected text.
I ran into this old Russian chess book online for tactic training. I'm unsure how to use it though as there are no solutions and no objectives are given. I'm not even sure whose move it is.
https://vk.com/doc435285351_460721117?hash=a0c0262652aee36e4c&dl=3ebfbebce576dd64dd
It's good for me because chess websites are blocked at my school and once it's downloaded I've got a lot of puzzles at my disposal. Anyone have a clue what's going on here?