The eBook "Alekhine's Defence" is written by GM Nigel Davies and IM Andrew Martin, the main updates were made by Martin.
The Main Variation in Chase Variation is:
1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. c5 Nd5 5. Bc4 e6 6. Nc3 Nxc3 7. dxc3 Nc6 8.
Bf4 Qh4 9. g3 Qe7 10. b4 g5 11. Be3 Nxe5 12. Bd4 with the comment I already quoted.
In the Exchange Variation 5. ... cxd6 is mentioned as Main Variation with:
1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1
O-O 9. b3 e5 10. dxe5 dxe5 11. Qxd8 Rxd8 12. c5 N6d7 13. Nf3 Nc6 14. Bc4 h6 15.
Ne4 Re8 16. O-O Re7 17. Nd6 Nf8 18. Nxc8 Rxc8 19. Nd2 with the comment I already quoted.
thx for your answer JohnCox, I did really appreciate it.
My current rating is about 1900-2000 and my opponent rating will be between 1700 and 2250, at least most of the time. Many people, especially with higher ratings, just say you can play everthing if you are not playing at IM/GM level (where we have to choose some of the openings you suggested). In their point of view surely true, still this doesn't help me as 1950er which opening to choose or which one are the best for my task / vs. my opponents.
Honestly, I think in my rating class most games will diverge from mainlines most of the time and as early as move 6, 7 or 8, therefore I will give Alekhine a chance, but with a slightly critical basic setting.
Your answer points out the main task, undergo pressure for the sake of reward, of Alekhine and I think this main drawback (voluntary go under pressure) doesn't suits me. But I will play through some of your annotated games, play some rapid games and maybe it suits me after all.
btw: why is the Alekhine eBook not written by John Cox.
best regards
Markus