When Thinkers Publishing suggested that I might try to produce a book on Alekhine Defense, since for some reason it seems that I have a reputation for using nonconformist openings, this idea seemed reasonable. In that Covid period I had nothing better to do after all! However, after a few months I realized Thinkers Publishing had given me a hot potato (thank you very much!), namely, the arduous task of checking the recent serious work of Kornev and Negi, in addition to the gigantic book of Chetverik and Kalinichenko, to mention a few. Already old' suggestions from John Shaw dated 2016!
Therefore, you will find some references to those inspirational sources throughout this book (Chetverik & Kalinichenko is abbreviated as C&K).
At first I wasn't sure if I wanted to talk about "all the existing lines" of this intriguing opening, and I discovered in the process that there were quite a few, or if I would order them to offer a black repertoire. I finally decided on the first approach, to give you, dear reader, a wider choice. Of all the lines included in that book, the Four-Pawn Attack Classic, covered in the Bonus Lines chapter, is probably the only one in which a black player would need more knowledge to be "safe" from a theoretical standpoint.