Author: Ed Schröder
Date: 15:50:11 05/23/99
Go up one level in this thread
On May 23, 1999 at 15:29:21, Mark Young wrote: >On May 23, 1999 at 08:08:57, Ed Schröder wrote: > >>Analysis game-1 >> >>It's my understanding this game against GM Rohde was a classical >>example of seeing a pawn gain for a king attack that was underestimated. >> >>After having taken the time to have a close look at the game I see 4 >>key fragments. >> >>[Event "Monthly GM Challenge"] >>[Site "Internet (Rebel Home Page)"] >>[Date "1999.05.22"] >>[Round "?"] >>[White "Rebel 10.5"] >>[Black "GM M. Rohde"] >>[Result "0-1"] >>[WhiteElo "?"] >>[BlackElo "?"] >>[ECO "E00"] >> >>1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 c5 5. Bxb4 cxb4 6. Bg2 O-O 7. Nf3 >>d6 8. O-O a5 9. a3 Na6 10. Nbd2 Re8 11. Ne1 e5 12. Nc2 bxa3 13. Rxa3 Rb8 >>14. Ne4 Nxe4 15. Bxe4 Bh3 16. Re1 Qb6 17. e3 f5 18. Bd5+ Kh8 19. Qa1 Nb4 >>20. Nxb4 axb4 21. Ra5 exd4 22. Rb5 Qd8 23. exd4 Ra8 24. Rxe8+ Qxe8 25. >>Qc1 Qe2 26. f4 Qd3 27. Rxb7 Re8 28. Kh1 Qc2 29. Qe3 Qb1+ 30. Qg1 Qxb2 31. >>Rb6 h6 32. Ra6 Qc2 33. c5 dxc5 34. dxc5 Qc3 35. Ra1 b3 36. Rc1 Qd3 37. >>Rd1 Qe2 38. Rb1 b2 39. Qd1 Qxd1+ 40. Rxd1 Rd8 41. Rb1 0-1 >> >>17. e3? >>Blocking its pieces to go the king-side. After this move Ne3, Rg3 (h3) are no >>longer possible. 17.e3 was a last minute decision of Rebel10.5 it had 17.Qd3 >>all the time. Black answers with 17..f5 and now black is the boss on the king- >>side. >> >>21.Ra5 exd4 22.Rb5 >>Going for the pawn, nice manoeuvre but definitely wrong. Rebel's score dropped >>from 0.7 to 0.3 (or so) when it saw the danger of Qe2 but that was to few to >>give >>up the hunt for the pawn. > >Yes this was a mistake, but I don't think it should cost the game. > >> >>24.Rxe8?? >>The main positional mistake in my opinion. After this move Rebel is definitely >>lost in all variations. It gives away the crucial e-line. IMO Rebel should have >>played 24.Qd1 > >Can you give just one line to show this. > >> >>26.f4? >>I don't now why Rebel10.5 played this move. It's just a matter of search depth >>to see this move is losing material on short term. Rebel10.5 needs 12 plies >>to see the loss and then changes to 26.Bg2 (the good move). I tested the >>current REBEL-CP on this position and nowhere in the log I see the ugly >>f4?, see: > > >This was the move that cost the game, after the correct 26.Bg2 how does black >win. It is not enough for a GM to say I am won at move 20 and show no lines. I have asked Michael Rohde in email. >>00:00:00 01.00 0.82 Bd5xb7 >>00:00:00 01.02 1.03 Rb5xb7 >>00:00:00 02.00 1.09 Rb5xb7 Ra8-e8 >>00:00:00 03.00 1.52 Rb5xb7 Ra8-e8 Rb7xb4 >>00:00:00 04.00 1.18 Rb5xb7 Ra8-e8 f2-f4 Bh3-g4 Rb7xb4 >>00:00:01 05.00 1.07 Rb5xb7 Ra8-e8 f2-f4 Qe2-d3 Rb7xb4 Qd3xd4+ Kg1-h1 >>00:00:01 06.00 1.07 Rb5xb7 Ra8-e8 f2-f4 Qe2-d3 Rb7xb4 Qd3xd4+ Kg1-h1 >>00:00:01 07.00 1.07 Rb5xb7 Ra8-e8 f2-f4 Qe2-d3 Rb7xb4 Qd3xd4+ Kg1-h1 >>00:00:02 08.00 0.00 Rb5xb7 Ra8-e8 f2-f4 h7-h6 Rb7-f7 Re8-e4 Rf7-f8+ >>00:00:06 08.04 0.09 Bd5-g2 Qe2-d2 Qc1-f1 Qd2xb2 Rb5xb7 Bh3xg2 Kg1xg2 >>00:00:10 09.00 -0.05 Bd5-g2 Qe2-d2 Qc1-f1 Qd2xb2 Rb5xb7 Bh3xg2 Kg1xg2 >>00:00:11 09.01 0.00 Rb5xb7 Ra8-e8 f2-f4 h7-h6 Rb7-f7 Re8-e4 Rf7-f8+ >>00:00:38 10.00 -1.92 Rb5xb7 Ra8-e8 f2-f4 h7-h5 Rb7-b5 Re8-e4 Bd5xe4 >>00:00:47 10.01 -0.12 Bd5-g2 Qe2-c2 Qc1-f1 Bh3xg2 Kg1xg2 b4-b3 Rb5-b6 >>00:01:13 11.00 -0.01 Bd5-g2 Qe2-c2 Qc1-f1 Bh3xg2 Kg1xg2 Qc2xb2 Rb5-d5 >>00:02:28 12.00 -0.04 Bd5-g2 Qe2-c2 Qc1-f1 Bh3xg2 Kg1xg2 Qc2xb2 Rb5xb7 >>00:06:50 13.00 -0.07 Bd5-g2 Qe2-c2 Qc1-e1 Qc2xc4 Bg2-f1 Bh3xf1 Rb5xb4 >> >>I guess I have some home work to do. >> >>It's not clear to me how black will win after 26.Bg2 (I will ask GM Rohde) but >>it is clear to me there should be an easy winning plan for black as his position >>is overwhelming. > >I don't see an overwhelming position after 26. Bg2. I would think that someone >or some program could see the win if this was true. I am open to a line to show >this. By head: black gets the white queen for the black rook and bishop. From there black can create his pawn op b4 into a passed pawn and win. That's a lot moves away but IMO is the danger. We will see what Michael has to say. >>All in all a very valuable game for me showing me several weaknesses in >>Rebel which I wasn't aware of and I now have the possibility to improve >>them. > > >All in all a fun game to watch, and now that I have had time to look at the >game, Rebel 10 up to move 26, did not play that badly. Yes it made same >mistakes >positionaly, but the question is was this enough to lose, or was it the simple >tactical oversight by rebel (bug???) when it play 26. f4. If it was 26. f4.. , >I know which one I would fix first. Be sure 26.f4 has my full attention at the moment :-) Ed Schroder >>Like at AEGON games against such strong players have been of more >>importance to me then a 1000 autoplayer games where it often is allowed >>to make minor (or even big) positional mistakes without losing immediately. >> >>Against a GM you simply can't. After 24.Rxe8? the game was over as a >>GM won't let you escape. >> >>I am impressed how GM Rohde handled his won position, definitely not >>going for the shortest win but move by move carefully avoiding all kind >>of tactical stings till there was a clear won position on the board. >> >>My warm congratulations goes to GM Michael Rohde for this fine and >>well played game! >> >>Ed Schroder
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