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Baadur Jobava vs Luc Winants
European Team Championship (2007), Heraklion GRE, rd 5, Nov-01
Bogo-Indian Defense: Vitolinsh Variation (E11)  ·  1-0

ANALYSIS [x]

FEN COPIED

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sac: 49.Rxg4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Mar-02-17  Doniez: Too difficult for me, it could be a Saturday puzzle
Mar-02-17  YouRang: Thursday 49.?


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I didn't see the game continuation, but I did look at <49.Rxg4>, and figured it was probably best.

I figured <49...Kxd6> would be met by <50.Rh7> with a double attack on Ng7 (this is where I deviated from the game line).


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- If black moves the N out of take (e.g. 50...Ne8?) then white wins the Rd7 with 51.Rd4+

- If black takes the pawn with the N via 50...Nxf5, we have 51.Bxf5 Rxh7 52.Bxh7, and hopefully white can convert the R+B+P vs R+2P ending.

Sadly it didn't occur to me that black could attack the bishop with <50...Ke5>


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...and things are pretty unclear. Pfft.

Mar-02-17  Afroim: Also wining if 49.Re4+ Kxd6 50.Rd4+ ... 51.Rxd7 Kxd7 52.Rh7 and winning the Knight
Mar-02-17
Premium Chessgames Member
  agb2002: White has a bishop for a pawn.

Black threatens Kxd4 and Rxd6.

White can try to create a skewer to keep the material advantage with 49.Re4+:

A) 49... Kxd6 50.Rd4+ Kc(e)7 51.Rxd7+ Kxd7 52.Rh7 Rf7 (52... Rg8 53.f6 or 53.Bc4 win the knight) 53.Bc4 Re7 54.f6 wins (54... Re4 55.fxg7 etc.).

B) 49... Kf6 50.Rxg4

B.1) 50... Rxd6 51.Rh6+ Ke5 (51... Ke7 52.Rxg7+ Rf7 53.Rxf7+ Kxf7 54.Rxd6 + - [R+B]) 52.Rxd6 Kxd6 53.Rxg7 + - [B].

B.2) 50... Nxf5 51.Bxf5 Rxd6 (51... Rg7 52.Rh6+ wins) 52.Rg6+ Ke5 (52... Kxf5 53.Rxd6 + - [R vs P]; 52... Ke7 53.Rh7+ also wins a rook) 53.Re1+ Kd7 54.Rd1+ wins a rook.

C) 49... Kd5 50.Rxg4

C.1) 50... Kxd6 51.Rd4+ as in A.

C.2) 50... Rxd6 51.Rxg7 + - [B].

C.3) 50... Kc5 51.Ne4+ + - [B].

Mar-02-17
Premium Chessgames Member
  agb2002: I've just noticed that 53.Bc4 in my line A can be met with 53... g3+ because the bishop no longer protects the rook so that if 54.Kxg3 then 54... Nxf5+ wins.

Therefore, 53.f6 is preferable.

Mar-02-17  AlicesKnight: I looked for something more 'clever'. What after 49....Rxd6?
Mar-02-17  tatarch: < AlicesKnight: I looked for something more 'clever'. What after 49....Rxd6?>

50.Re1+

Mar-02-17  gofer: Okay, so we have two pieces en-prise, but are we worried...!? A little perhaps...

I looked at the blazen pawn push f6! Thinking of "Death or Glory"! But it seems to be death... <49 f6 Kxd4 50 fxg7 Rxg7 and black as two supported connected passed pawns, ouch!> After discarding that garbage, I was a little flummoxed. Lots of things to try... ...but finally, I felt I could simply take the loose pawn on g4.

<49 Rxg4! ...>

Ironically the knight is immune!

49 ... Kxd6
50 Rd4+ Ke7/Kc7
51 Rxd7+ Kxd7
52 Rh7 Rf7 (Rg8 53 Bc4 )
53 Bc4 Re7
54 f6

49 ... Rxd6
50 Re1+ Kd5 (Kf6 Rg6+ )
51 Rxg7!

So what else?!

<49 ... Nxf5>
<50 Nxf5 Rxd3>
<51 Ng3! ...>


click for larger view

White is a pawn down, but his rooks are god-like, they will simply march up the board marshalling the black king to the back rank probably into the h8 corner.

I am not saying that its a definite win, but it looks okay, loads of traps for black to navigate through...

One continuation might be...

51 ... Rd2+
52 Ke3 Rb2
53 Rh5+ Ke6
54 Re4+!


click for larger view

Lots of possibilities for white...

What does your silicon friend say <Once>!?

Mar-02-17  mel gibson: I was looking for a move that was too clever.
I didn't want to lose the knight.

The computer agrees with the text:

49. Rxg4 (49. Rxg4
(♖d4xg4 ♔e5xd6 ♖g4-d4+ ♔d6-e7 ♖d4xd7+ ♔e7xd7 ♖h1-h7 ♖f8-f7 f5-f6 ♖f7xf6 ♖h7xg7+ ♔d7-c8 ♖g7xa7 ♖f6-f4 ♔f2-e3 ♖f4-b4 ♔e3xf3 ♔c8-b8 ♖a7-h7 ♔b8-c8 ♔f3-e3 ♔c8-b8 ♖h7-e7 ♔b8-c8 ♖e7-a7 ♔c8-b8 ♖a7-f7 ♔b8-c8 ♖f7-f4 ♖b4-b3 ♔e3-d4) +5.60/21 47)

score +5.6 depth 21

Mar-02-17  whiteshark: It's all about a skewer...
Mar-02-17  morfishine: Pattern not recognized
Mar-02-17  The Kings Domain: Tough puzzle, I thought of the text move but couldn't see the combination that transpired. Jobava at his best is deep and complex.
Mar-02-17  saturn2: I took 49 Re4 instead of Rxg4 but had similar follow uo Rd4+, RxR, Rh7 pinning the knight. If black tries to protect the knight by Re7 (instead of Rg8) there is also f6.
Mar-02-17
Premium Chessgames Member
  Jimfromprovidence: Very tough but fair puzzle. The 49 Rxg4 Nxf5 line seems like the most difficult to figure out.


click for larger view

Also, FWIW, 53 Bc4 is a good alternative to 53 f6.


click for larger view

Mar-02-17
Premium Chessgames Member
  benveniste: I didn't get this one, but obviously Baadur saw it well ahead of time OOB. 48. ♖c1 seems like it's a lot easier of a win.
Mar-02-17  LIzzard: I got stuck on the 49: Re4+, which I think will still win the knight, but still leaves the advanced pawn.
Mar-02-17
Premium Chessgames Member
  Richard Taylor: I (also) found this position too confusing. Maybe I'm getting too old. But it was simple enough when I played it over but like yesterday's it had me knackered...
Mar-02-17  morfishine: No doubt, engines will sort out this mess

*****

Mar-03-17  Moszkowski012273: 48.Ra1... is a bit stronger. But it's a tough move to play.

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