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Alexander Morozevich vs Anish Giri
Biel Chess Festival (2012), Biel SUI, rd 1, Jul-23
Gruenfeld Defense: Russian Variation. With e4 (D97)  ·  0-1

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White to move.
ANALYSIS [x]
33. Qh6+! Kg8 34. Qh8+! Kxh8 35. Nxf7+ Kg7 36. Nxd6 +- 0-1

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jul-23-12  Marmot PFL: Maybe black avoided f5 because the rook would no longer defend g5, and didn't look for more. still that seems unlikely
Jul-23-12
Premium Chessgames Member
  OhioChessFan: f5+ seemed pretty obvious. White had to play Ra8 instead of Ra4 to avoid that mess and Black missed it anyway.
Jul-23-12  JimmyRockHound: I wasthinking exactly what Strifeknot was: that Giri dropped the pawn on the wrong square.
Jul-23-12  Strongest Force: Will Moro "bend" again?
Jul-23-12  bubuli55: Now Giri is thinking of that f6 move. He is probably dejected right now :(

go Giri go!

Jul-23-12
Premium Chessgames Member
  chessgames.com: That's it for today folks, stop back tomorrow at 8:00am USA/Eastern for round #2 of the Biel Chess-Festival!
Jul-23-12  brankat: Congratulations GM Giri!
Jul-23-12  waustad: In live rating he's picked up 20.9 ELO in the Dutch Championship and here.
Jul-23-12  JimmyRockHound: morozovich's Re4 was a bit of a faux pas... Well played Giri.
Jul-23-12  BadKnight: wow great..beating moro is not too bad start for a kid.
Jul-23-12  lost in space: uha, 51...Rd5+ is nearly mate and the white queen is gone.
Jul-23-12  Marmot PFL: Evidently the only defense for white was 49 Rg4, protecting g2 so the kind could escape by e2 after Rf5+. Finding these forced moves is not easy move after move.
Jul-23-12  messachess: Tremendous attacking chess by Giri, beating Moro in the style of Moro! Now, can he overcome the squeeze-play style chess of Carlsen? (Ugh!)
Jul-23-12  BUNA:


click for larger view

Here Moro - short of time - choose 39.Qe3. 39.Qf2 would apparently have drawn. White keeps his Queen next to his king and threatens his opponent (Qf6+). (39.Qf2 Rd3+ 40.Kh4 g5+ 41.Kxg5 Qc1+ 42.Kg4)
This error probably sealed the game, a game between humans that is. Later on this position arose:


click for larger view

White is threatening
45... Qh2 46.Qxe3 Qxg2+ 47.Qg3 Qe4+ with mate.
Moro therefore played 45.Ra4 (protecting e4).
Houdini is of course just laughing and suggesting 45.Ra8. :)

Jul-23-12
Premium Chessgames Member
  OhioChessFan: Anyone know for sure if White actually played 51. Kd4? I am thinking not.
Jul-23-12  mrbasso: Why didn't he play 35.Qxe5? These King walks are dangerous.
Jul-23-12
Premium Chessgames Member
  moronovich: <OhioChessFan: Anyone know for sure if White actually played 51. Kd4? I am thinking not.>

Both whychess.org and playchess.com gives 51.d4.

Jul-23-12  BUNA: <mrbasso: Why didn't he play 35.Qxe5?> There's probably just one answer. He thought he couldn't win that way. :)
Jul-23-12
Premium Chessgames Member
  OhioChessFan: <mrb> typically Moro is always playing for a win and thought exchanging Queens would lead to a draw.
Jul-23-12  roninmb: Hmmmm
White missed a little trick playing 33.f4. Better was 33.Qh6+ with the idea to win a pawn after 33...Kxh6 34.Nxf7+ and 35. Nxd6.
Jul-23-12  messachess: <moronovich you mean 51.Kd4, Chessdom.com too. Kd4 it is!
Jul-23-12  Eyal: <Why not 46...f5? Looks like a winner to me.>

<f6 instead of f5????>

<weird, as f5+ is an obvious move>

<f5+ seemed pretty obvious.>


click for larger view

Well, the win after 46...f5+ isn't <that> obvious: <47.Kf3 Qf1+ 48.Kg3 (48.Qf2 Qd3+) 48...f4+> and now, after (a) <49.Kh2 Re2 50.hxg5+> Black has to be very careful - 50...Kxg5?? 51.Qd8+ or 50...Kg6?? 51.Qd3+ actually lose, since White’s attack gets there first; only <50...Kh5!> wins; and after (b) <49.Kg4> the only winning move is <49...Qb5!> which both attacks the rook on a4 and supports g5 in preparation for the lethal Re3 (after an immediate 49...Re3? White is better: 50.hxg5+ Kg6 31.Rxf4). So if Black doesn't see these forced wins to the end he might be afraid for his own king’s safety.

Jul-24-12  LoveThatJoker: <roninmb> This is correct, but as noted on the tournament's official site post-game video with GM Giri, 32...Rb1+ would have prevented any tricks.

Giri missed his best 32nd and Moro missed his best 33rd!

LTJ

Jul-25-12
Premium Chessgames Member
  tarek1: Someone like Gelfand would've played 35.Qxe5+.
Allowing the Black pieces into the back rank proved too dangerous in practical play and even with perfect defense White had nothing more than a draw. He counter play on the f file was always a bit too late.
Jul-10-14
Premium Chessgames Member
  FSR: As <OCF> pointed out, Moro missed a win with 33.Qh6+! Kg8 34.Qh8+! and White will be a pawn up in a R+N ending. Cf. White's missed 26th and 27th moves in Alekhine vs Euwe, 1937.
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