Variations from normal chess, as Fairy Chess or 960 ? Or variations in Openings ? Or slow or speed chess ? Please explain and give examples !
Main Variations

Thanks for your question. I'm thinking about variations from openings. When reading openings-books, one can often see in the back of these books a short chapter, named "Index of variations". I just thought, that some of you might know of somewhere, where a universal "index of variations" was situated

Yes : in the good book "The Oxford Companion to Chess" is an appendix of openings with an index of 1327 named openings, variations, systems, gambits, attacks and defences.
It gives a very clear and extensive survey and summary of ( I should say all ) opening possibilities, most up to 5 to 10 moves long.
For each of them there is a short explanation in the book itself.

See www.schaakboek.nl, number 16819, this book by Hooper and Whyld, edition 1992, 483 pages.
Dear all.
I am looking for a little pamphlet of the main variations in chess. It doesn't have to be more than ten pages. Does anybody know where, one can buy / see something like that?