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Dragos-Nicolae Dumitrache vs Daniel Baratosi
SuperLiga-ROM (2008), Eforie Nord ROM, rd 1
Queen's Gambit Declined: Westphalian Variation (D51)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jul-08-10  Mostolesdude: <zooter> <A quick glance at material> well my quick glance tells me black has a worthless bishop and white has a dark-squared bishop worth all the extra pawns that black has.
Jul-08-10  Marmot PFL: This and yesterday should have been switched. 38 Rxg6 was the first move I looked at and the lines are simple. Total time under 30 seconds.
Jul-08-10  Patriot: I really wanted to play 38.Qd8, but 38...Qxf4+ was troubling. 39.g3 Qd2+ (not 39...Qxd6?? 40.Qh8#).

So then I looked at 38.Be5. This looks very tricky and possibly winning. I'm not sure if there's a good defense.

38.Qxh5+ leads nowhere, so then I looked at 38.Rxg6 and a lightbulb lit up. After 38...Kxg6, 39.Qg5+ Kh7 40.Qxh5+ Kg8 41.Qh8#. Plus with 39.Qxh5# threatened this looks resignable.

Jul-08-10  tarek1: Very straightforward win after <38.Rxg6 Kxg6> since Qxd4 is met by Qxh5# <39.Qg5+ Kh7 40.Qxh5+ Kg8 41.Qh8#>
Jul-08-10  tarek1: the immediate mistake is 36...c3
After 37.Bd4 3 7...Qe2 (defending h5) is met by 38.Qd8 and Qd2 is the game. After the cautious 36...Qc3 it's not obvious to me how white continues his attack before the pawns start moving.
Jul-08-10  CHESSTTCAMPS: <Once> <Compare to the black Rf7 which is on purely defensive duties, protecting the Bd7 and staring ...>

If the rook were behaving, there would be less dereliction of duty.

Thanks also for the improvement on my line D, also spotted by <agb2002>.

Jul-08-10  blair45: <<I think White showed both good judgement and a flair for risk with his pawn sacrifice 20.d5!?, which does "nothing" but open the d-file. An Englishman>> Second this comment. In playing over the game, I never would have guessed this move. Dumatrache gives up a passer for attacking chances only -- and makes it work.
Jul-08-10  WhenHarryMetSally: Is it just me or was this ridiculously easy today? it just hit me like a ton of bricks rxg6 was just begging to be taken!
Jul-08-10
Premium Chessgames Member
  kevin86: White sacs the rook to destroy the keystone of black's D. If the rook is captured,the queen sachees on the black squares to mate at h8.
Jul-08-10
Premium Chessgames Member
  dzechiel: <WhenHarryMetSally: Is it just me or was this ridiculously easy today?>

It's just you...

Jul-08-10  David2009: D Dumitrache vs D Baratosi, 2008 White 38.?

White must be careful not to allow perpetual check which is why 38. Rxd7? Rxd7 39. Qf6 Qxf4+ is wrong; similarly Qd8? Qxf4+. Instead 38. Rxg6 and if 38...Kxg6 39 Qg5+ Kh7 40 Qxh5+ Kg8 41 Qh8#. Black can try 38...Qd1 or 38...Qe2 hoping for 39 Rg5 Kh6! but White has 39 Rg4. Time to check:
======
It has all been said!
<CHESSTTCAMPS: B) 38... Qd1 (or e2) 39.Qg5 and black can only delay Qh6# with a spite check.> (<dzechiel> similar). Yes - much more efficient than Rg4 when Black can limp on with Qxg4.

Jul-08-10
Premium Chessgames Member
  chrisowen: Dumbo I caged the elephant. 38.Rxg6 with ears to the ground is pray mammoth tusk for black. I relied hard glade Qg5, wing gambits call for bold action. 38.Rg7 Bxg7 Qxd6 Dragos Qh6+ maugic feather Kf7 took flight and mate is coming. Tickles me pink f3 f5 is truncated step bishop control dark squares, it was cunning deployment.
Jul-08-10  YouRang: Got it pretty quickly. One must always take a look at sacrifices that tear down the defense around the opposing king. This is especially true when the king position is attacked by a queen and two pieces (say and rook and a bishop). One piece rips open the defense while the queen and the other piece deliver the bad news.

This is the case today: 38.Rxg6! eats black's main defensive pawn with force since it threatens 39.Qxh5#.

After 38...Kxg6, we leverage our Pf4 with 39.Qg5+ Kh7 40.Qxh5+ Kg8 41.Qh8#, all nicely forced.

I suppose black can delay mate by giving up his queen for the rook & pawn with 38...Qxf4+ 39.Qxf4 Kxg6 and now Qg5+ is out because the supporting Pf4 is gone. Still, white is up a queen for a rook with a pleasant finish if black cares to bother with it.

Jul-08-10  dumbgai: 38. Qg5 also wins easily, right?
Jul-08-10
Premium Chessgames Member
  ajk68: A few people have suggested 38...Qxf4+ to prolong the agony. I don't think it prolongs things much. After 39. Qxf4 Kxg6 40. h4!! white can force mate. It appears 40...Rh7 might be the best defense - giving the king a bit of an escape route. But that allows for 41. Qe6+ Kf7 42. Qxd7+. Black then has to go to either g6 or g8. White then moves Qe6# or Qe8#.
Jul-08-10
Premium Chessgames Member
  patzer2: For today's Thursday puzzle solution, 38. Rxg6! initiates a mating attack with a sham Rook sacrifice.
Jul-08-10  YouRang: <dumbgai: 38. Qg5 also wins easily, right?>

It wins. "easily" is open for debate.

It might go:
38.Qg5 Rg7 <prevent 39.Qxg6#>

39.Bxg7 <with discovered attack on Q> Qxd6

40.Qh6+ Kg8 <forced>

41.Be5 <double threat: BxQ and Qg7#> Qe7

42.Qxg6+ Kf8 43.Bd6 pins & wins black queen.

Jul-08-10  ZUGZWANG67: From the position one can see with relative ease the ideas of an Anderssen Mate and mate with the R at g6 and the Q at h5. But there's also Black's trump at c3. I hesitated for quite a long time between 38.Rxg6 and 38.Qg5. My conclusion is that 38.Qg5 allows 38...Rg7, when I can't see how W could win. If W captures 39.Rxg6, 39...Qxd4 (better than 39...Rxg6? 40.Qe7+ Kh6 (40...Kg8 41.Qd8+ Kf7 (41...Kh7 42.Qh8+ mate) 42.Qxd7+ Kf8 43.Bc5+!)41.Qf8+ Kh7 42.Qf7+ and mate to follow) is probably sufficient for the defense: g7 and h8 are under control and g6 is protected. So 38.Rxg6. Now the threat at h5 is real, as 38...Qe2 39.Qg5 renews, but at h6 this time. Thus, the suicidal 38...Qxf4+. But after 39.Qxf4 Kxg6 White has 40.Qg3+, 41.Bxc3 and eventually Qe5, which should keep the edge, I think. Please note that I' m doing this (as most people here, I guess) with no software and without moving the pieces. This all seems complicated for a thursday; I may be wrong. Let's see.

---------

Ok. I'm right for move 38, at least. Let's see what others have to say.

Jul-08-10
Premium Chessgames Member
  Once: <dakgootje: I thought mr <once> would point to the impressive black pawn chain which gets slaughtered from weak-point g6 and combine that with an Achilles-anecdote.>

Very impressive! Better than what I came up with.

Jul-08-10  ZUGZWANG67: <dzechiel: <WhenHarryMetSally: Is it just me or was this ridiculously easy today?> It's just you...>

I like your answer, dzechiel.

Jul-08-10  wals: Went for Qd8 completely overlooking
38...Qxf4+, or Be8.

Black's first blunder was 35...Qxe3 +5.64.
Better was Qa3 or Qb4 both +0.47. Others were,
36...c3 +14.44 (Be8) and 37...Qd2 #7 (Qxd4)

courtesy of Rybka 3 1-cpu: 3071mb hash: depth 14.

Jul-08-10
Premium Chessgames Member
  ajk68: With the line I gave earlier, it looks like 40...Rg7 puts up more resistance, but is still futile. 41. Qe5!! appears to be the strongest answer (I am working without a chess engine) which looks like mate on move 46 (after black has thrown some pieces in the way of a check).
Jul-08-10  lzromeu: Easy: Rxg6, Qg5 or Qf6 wins, doesn't it?
Jul-08-10  ZUGZWANG67: <YouRang: <dumbgai: 38. Qg5 also wins easily, right?> It wins. "easily" is open for debate.

It might go:
38.Qg5 Rg7 <prevent 39.Qxg6#>

39.Bxg7 <with discovered attack on Q> Qxd6

40.Qh6+ Kg8 <forced>

41.Be5 <double threat: BxQ and Qg7#> Qe7

42.Qxg6+ Kf8 43.Bd6 pins & wins black queen.>

Let us remember that after 38.Rxg6, Black has 38...Qxf4+. So as in this "main" line, Black could sacrifice his Q, this time by 41...Qxe5 (after 38.Qg5 Rg7 39.Bxg7 Qxd6 40.Qh6+ Kg8 41.Be5), which amounts to the same thing.

Jul-08-10
Premium Chessgames Member
  Eisenheim: more of a monday type of puzzle - the g6 pawn looks like a loose tooth that needs to be yanked
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