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Marc Vallet vs Joffrey Lebon
Fourmies (2001), Fourmies FRA, rd 5, Jun-03
Spanish Game: Open. Riga Variation (C80)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jun-10-03  refutor: i haven't lived up to my name recently, but i think i have actually refuted the riga variation. 11.♖xe4+ is theory back to the days of Capablanca-Ed.Lasker (not in this database but i have added it...always good to tell myself i've improved on capablanca). i believe i have found a refutation to the whole line 11.♗g5!! saves the day and wins a piece for white. this was confirmed by two correspondence games which can be found in the nicbase at http://www.newinchess.com/NICBase/D... i couldn't find a save for black, and either could my computer...is there a reason why capa didn't play this and played 11.Rxe4+ instead? have i finally lived up to my name and refuted the riga variation of the open lopez?? ;)
Jun-10-03
Premium Chessgames Member
  Honza Cervenka: <refutor> I am afraid that in this position 11.Bg5 leads to 11...Qxf2#.
Jun-10-03  refutor: i apologize, this is the wrong game...there is a similar line with 10. ... ♔h8...i'll see if i can find an example...boy is my face red
Jun-10-03  refutor: here's the game i was talking about

Capablanca - Ed. Lasker 1915

1. e4 e5 2. ♘f3 ♘c6 3. ♗b5 a6 4. ♗a4 ♘f6 5. O-O ♘xe4 6. d4 exd4 7. ♖e1 d5 8. ♘xd4 ♗d6 9. ♘xc6 ♗xh2 10. ♔h1 ♕h4 11. ♖xe4 dxe4 12. ♕d8 ♕xd8 13. ♘xd8 ♔xd8 14. ♔xh2 ♗e6 15. ♗e3 f5 16. ♘c3 ♔e7 17. g4 g6 18. ♔g3 h5 19. gxf5 h4 20. ♔h2 gxf5 21. ♘e2 b5 22. ♗b3 ♗xb3 23. axb3 ♖hg8 24. ♖d1 ♖ad8 25. ♖xd8 ♔xd8 26. ♘d4 ♔d7 ... the rest of the game is too long to fit

11.♗g5!! is the move here i believe

Jun-10-03
Premium Chessgames Member
  Honza Cervenka: Well, it seems to be better with King on h1, but what if simply 11...Qxg5?
Jun-10-03  AgentRgent: Curse that Figurine Notation!!! I can't copy and paste into Winboard!
Jun-10-03  refutor: 12.♕xd5 is looks okay to me...black has too many pieces hanging...i'm at work right now i'll give the rest of my analysis once i get back home...

<agentrgent> sorry about the figurine ;) next time i try and bust a line i'll put it in text

Jun-10-03
Premium Chessgames Member
  Honza Cervenka: <refutor> If 12.Qxd5, then 12...Qxd5 13.Nb4+ (I guess) 13...Kd8 14.Nxd5 Be5 etc.
Apr-27-05  cuendillar: Just published a major analysis work on the Riga variation at http://www.chess.ac/ I made it as a .cbh file so you need chessbase to see it. It's written from black's point of view, mostly recommending a single line for him.

It confirmed that white has no chance for an advantage against it in any line except the exchange sac in the main line. I haven't yet solved the ending, ideas and evaluations on it would be most welcome. Against 11.Bg5, I had the same line has Honza, with a clear edge for black. Capablancas line still stands as the strongest response! Against 10.Kf1, I preferred Qh4

Apr-27-05  hintza: The Riga Variation has a special place in my heart!
Jan-08-06  Karpova: why not 17.Be6: instead of Nd2? (17.Be6: Rfe8 18.Bf7:+ Kf8: 19.Qf4+)
May-26-07  Joffrey: 13. ... 0-0 !!

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