On
The Benko Revisited 1+2, I have looked at the contents for Volume 2, where all the accepted lines are (both main lines and 5th move "sidelines" 5.Nc3, 5.e3, 5.b6 and 5.f3). Surprisingly (to me at least) Kovalchuk goes for the traditional accepted main lines, with one chapter each on 12.Re1, 12.h3 and the critical 12.a4 in the "King Walk" variation. All those fans of the traditional positional Benko pressure who never got used to the razor-sharp Perunovic theory will be delighted!
Actually, the free sample of Vol. 2 with the introduction already reveals his main path against 12.a4 - it's 12...Qb6 and Kovalchuk follows his own 2021 game against GM Lysyj all the way to move 29, where he claims equality but in the game he started to go wrong.
Elsewhere in the introduction he also mentions that the lines "have become more specific, sometimes requiring very accurate knowledge. The load on memory increases [...]". So fans of the good old positional, understanding-based Benko may be in for some heavy memory work after all...
[Event "Cheliabinsk Variant Gp-A"]
[Site "Cheliabinsk"]
[Date "2021.03.28"]
[Round "6"]
[White "Lysyj, Igor"]
[Black "Kovalchuk, Alexey"]
[Result "1-0"]
[ECO "A59"]
[WhiteElo "2605"]
[BlackElo "2379"]
[PlyCount "81"]
[EventDate "2021.03.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "RUS"]
[Source "ChessBase"]
[SourceDate "2021.07.31"]
1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. e4 Bxf1 8. Kxf1 g6 9. g3 Bg7 10. Nf3 Nbd7 11. Kg2 O-O 12. a4 Qb6 13. Qe2 Rfb8 14. Nb5 Ne8 15. Ra3 Nc7 16. Nxc7 Qxc7 17. b3 Qa5 18. Bd2 Qa6 19. Qxa6 Rxa6 20. a5 f5 21. exf5 Nf6 22. fxg6 hxg6 23. h4 Nxd5 24. h5 gxh5 25. Rxh5 Nc3 26. Be1 Bf6 27. Rf5 Nb1 28. Ra4 Rxb3 29. Ng5 Kg7 30. Ne6+ Kf7 31. Re4 c4 32. Nc7 Rc6 33. Nd5 Rb7 34. a6 Ra7 35. Rxe7+ Rxe7 36. Rxf6+ Ke8 37. Nxe7 Kxe7 38. a7 Ra6 39. Rh6 c3 40. Bxc3 Nxc3 41. Rh8 1-0
RoleyPoley wrote on 03/26/22 at 18:48:46:
It is definitely under a cloud at the moment due to several lines. From reading peoples comments on this forum the books that have come out in the last several years have often lacked answers to the most critical moves (or even just not included the move) including one of the titles you are referring to (Benko Revisited?).
Are you sure you're thinking of the right book(s)? The two Benko Revisited books are comprehensive and just out less than two weeks ago. Kudos if you've already managed to check them and find some critical holes!