1001 Brilliant Chess Sacrifices and Combinations

This book has been published several different times under several different names. The question is: Are these composed problems or are these a collection of positions from actual games? It makes a difference under copyright law. 

"In my opinion these are composed problems. I can not find any of these positions that arose in an actual game." - Sam Sloan

So in solving these you should ask the questions you would ask in a composed problem. Why are the pieces of the losing side in such an awkward position? I actually had a dream about this, thinking about this question. See if you can create a game in which these positions actually arise? You will find you cannot do it.