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Alexander Morozevich vs Teimour Radjabov
Biel Int'l Festival (2006), Biel SUI, rd 4, Jul-27
Sicilian Defense: Old Sicilian. General (B30)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 13 OF 13 ·  Later Kibitzing>
Jul-27-06  JYMMI: São José dos Campos SP
Jul-27-06  acirce: Could Moro have won if instead 87..Nc6!?

I am not sure at all but I think this might be a positional draw. For example 88.h6 Ne5+ 89.Kh5 Kf7. If not 88.h6, still just 88..Ne5 and wait.

Jul-27-06  Sami Jr: If Raja didn't resign, Moro would have had to win in less than 1 minute. Doable but prone to errors when in a rush like that. So Raja was a gentleman in resigning, no?
Jul-27-06  fxenderby: eu sou de curitiba. e agora vou ver se trabalho um pouco. té a próxima!
Jul-27-06  TheBB: <Sami Jr>: Moro has 4 minutes. Radja is out of time.
Jul-27-06  cannibal: <SamiJr>
No, Radja was the one with only a bit more than a minute left. Moro had more than 4 minutes.
Jul-27-06  Sami Jr: Oh yeah, nevermind then... Thanks <TheBB>
Jul-27-06  Manequinho: Did Radja resign or did he loose on time?
Jul-27-06  JustAFish: Campinas, SP aqui
Jul-27-06  OJC: <Isolated Pawn>

Yeah, upon further review Moro could have won quickly with 69.Qe8! One of many moves missed in the game today by the looks of it.

Jul-27-06  percyblakeney: I followed the game with my chess engines on, and it's not often you see a player choose a move 3-4 pawns inferior to the strongest alternative on so many occasions as in this game. Not that it's easy to find the best move in queen endgames, but still a bit surprising, many times the mistake was made with 25-30 minutes on the clock.
Jul-27-06  OJC: < percy > Could you point out some of these moves?
Jul-27-06  percyblakeney: <OJC> I just put the game into Shredder for a very quick 5-seconds-per-move check since I've forgotten about which moves the engine was most unhappy with, I'll be back when I seen what turns up.
Jul-27-06  messachess: Hello, just joining in. Excuse me, but wouldn't 24.Re2 have won at least the exchange? What am I missing here?
Jul-27-06  percyblakeney: After a very quick check, some of the moves that made the chess engines most unhappy were Moro's:

35. f4 (Rg4 is much better)
55. Rd2 (Qb8 is more than 3 pawns better)
62. Qc6+ (Qb7+ wins after Ke5 Qf7)
69. Qc6+ (Qe8+ is more than 4 pawns better)

For Radjabov there's:

40. ... Kh5 (Rxb2 and no visible trouble for black)
46. ... Re7 (Re2 is seen as 2.5 pawns better)
68. ... Ke6 (Ke4 is more than 4 pawns better)
76. ... Ne4+ (Ke6 is 2 pawns better)

This superficial check is of course not too reliable and almost worthless, but these are some of the more decisive mistakes. And the players were after all in time trouble during some (but far from all) of these moves.

Jul-27-06  Reggie T: Percyblakeney, what about my previous analyse on move 49 ?

Reggie T: 49. Bh4+ (instead of Qd7+) g5 50. fxg5 hxg5 (50...Qe5+ 51. Bg3) 51. Bxg5+! was simple (51...Nxg5 52.Qc7+ Kf8 53. Rd8 mate; 51...Qxg5 52. Rxe6+ will win easily and 51...Kf7 52. Qd7+ Kg8 Rxe6)

Jul-27-06  OJC: Thanks for the analysis. Indeed surprising how many blunders when time wasn't a major issue. They must have been tired...
Jul-27-06  Assassinater: <After a very quick check, some of the moves that made the chess engines most unhappy were Moro's:>

Of course, the last blunder is often the most serious. :P

Premium Chessgames Member
  tpstar: <percyblakeney> I see what you mean about 35. Rg4 over 35. f4:

click for larger view

If 35. Rg4 Black might try 35 ... Bf5 yet White could trade down (36. Rxg5 Qxg5 37. Qxg5 hxg5 38. Bxf5+ Rxf5), then pick off the Pd6 with tempo (39. Bxd6). Maybe Morozevich avoided 35. Rg4 due to 35 ... Qxc2!? 36. Rxg5 Qd2 but here 37. f4 holds both Rooks. Still, the Rg5 has no escape square besides h5, and Black gets more compensation for the exchange with 37 ... Qxb2. What do you think is best play after 35. Rg4 instead?

Jul-27-06  percyblakeney: <Reggie T>

Your analysis seems to be right! When checking things very quickly the engines miss a couple of things they see when looking closer at the positions. By the way, 40. ... Kh5 is a move I dislike more than Shredder does, so I did try to think for myself now and then :-)


35. Rg4 Qxc2 36. Rxg4 Qd2 could also be followed by 37. Re3 and it doesn't look good at all for black. Moro had lots of time and used several minutes before deciding that 35. f4 was the best move. After 35. Rg4 I think Bf5 is the best move for black, but it doesn't look good at all for him because of the line you give.

Premium Chessgames Member
  tpstar: <Reggie T> I think you found the quickest win after 48. Rxe7+ Kxe7:

click for larger view

49. Bh4+ g5 50. fg hg 51. Bxg5+! and your lines are convincing with one more possibility = 51 ... Kf7 52. Qd7+ Kg6 53. Rxe6+ Kxg5:

click for larger view

Now 54. Qg7+ is decisive. Great analysis. =)

Jul-28-06  avidfan:

click for larger view

Late addendum to my post from page 4:
On 51.fxg5 hxg5 52.Bxg5 Qxg5
<52...Kxg5 53.Rd5 wins the queen.> 53.Qxe6+ Kg7 (53...Kf8 54.Qf7#)
53...Kh8 54.Qe8+ Qg8 55.Qh5+ Qh7 56.Qxh7#

My instincts were right but I did not analyse the above without computer help until 3 hours after my previous post, which preceded that of <Richie T>.

By the way, Thanks <tpstar> for your reply. I forgot to credit you for your analysis which was enhanced with a beautiful diagram! Your history on showed you are much too modest and helpful as a fellow chess enthusiast - a rare quality.

Jul-28-06  percyblakeney: If I understand Korotylev correctly he confirms on that 87. ... Nc6 had drawn, but it was a long game and not easy to get it all right in time trouble after many hours...
Jul-28-06  acirce:
Jul-28-06  Reggie T: Avidfan, I post my analyse (without computer help too) first on (Tournoi de Biel) before Morozevich played his 49th move, hoping that I post some seconds before he played.

After I post here.

I was surprise when I saw 49. Qd7+ and not 49. Bh4+

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