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Adam Horvath vs Viktor Erdos
XXXII Tenkes Cup (2008), Harkany HUN, rd 6
Spanish Game: Open. Bernstein Variation (C80)  ·  0-1



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Given 15 times; par: 25 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Mar-03-11  mohannagappan: very good puzzle, i have tried too much and i am not able to find the right move
Mar-03-11  hirthman: After 28 Kf1 Rh5 29 Qg1 Bh3 looks pretty good for black eg 30 Ne1 Qb5+ 31 Rd3 Bf5
Mar-03-11  zb2cr: Hi <Once>, Thanks for calling our attention to that story.
Mar-03-11  knight knight: Thursday, black to play, a pawn down.

After a few minutes I like 27...Bg4. This attacks the knight due to the pin on the g2-pawn, plus the knight is pinned, however I don't see a good reply after 28. Kf1, breaking the pin.

Now looking at 27...Rf5 with queen-trapping ideas. But 28. Kf1 again, giving the queen a square on g1.

Okay let's try the bishop capture 27...Rxf4 28. Qxf4. Maybe harass the queen with 28...Rg4. But 29. Qh2 looks fine for white.

How about 27...Rg4 on the bishop? 28. Bg3 is the obvious reply. Now 28...Rf5 threatens to win material. 29. Kf1 leads to a line involving Qb5+ which looks like it wins for black, but instead 29. Qh6 Bf8 30. Qe3 and I don't see a good continuation.

27...Rxg2+ 28. Kxg2 I don't see a good follow-up.

27...Bh3 28. Qxh3 Rxf4 29. Rxd5 black is two pawns down.

Let me go back to 27...Rf5. If 28. Qh6 Bf8 the queen can no longer retreat to e3, also, it needs to stay in contact with f4. If 29. Qh2 Rh5 30. Nh4 Be7 31. Bg3 Bxh4 32. Bxh4 Rg4 33. g3 Rhxh4 34. Qxh4 Rxh4 35. gxh4 Qh5 winning the h4 pawn with a two-point material advantage. If 29. Qh4 Rh5 30. Qf6+ Bg7 traps the queen.

So 27...Rf5 28. Kf1 Rh5 29. Qg1. Now 29...Bg4 looks good. If 30. Ke2 Qb5+ 31. Rd3 (pin city!) Qxb2+ makes the a-pawn huge. If 30. Rd3 Qb5 again. Looks like white has to give up the exchange.

Well all this is more of a Saturday puzzle solution, so I'm missing something, and thus having a bad week! :-(

Mar-03-11  alachabre: Very quickly, I see the sac

27. Rxg2 Qxg2
28. Rg7 Qxg7+

is not any great gain, so will come back to this later when time allows.

Mar-03-11  Marmot PFL: Quitting this for today, due to Java problems that keep the board from displaying staying on. I had move 28 instead of 27, at move 27...Rh5 (threatening Rh5) 28 Kf1 Rh5 29 Qg1 looks awful but I could not find a forced win, nor can I get the position to display again.
Mar-03-11  David2009: A Horvath vs V Erdos, 2008 Black 27...?

27...Qf8 28 Bh6 seems forced and now what? 28...Qa8 threatens d4 and meanwhile the Nf3 is en prise...AHA! We will play 27...d4 piling on the pressure. If 28 cxd4 Qf8 29 Bh6 Qa8 and White is struggling. Time to check (27...d4 is my final answer):
Missed it. The puzzle position colours reversed is

click for larger view

A Horvath vs V Erdos 2008 27...? colours reversed Crafty End Game Trainer link: The EGT ruthlessly exposes the flaw in my analysis: after 27...d4 28.cxd4 Qf8 29.Bh6 Qa8 30.d5! Black is busted. The Pawn is protected twice – a detail I had missed – bad forward visualisation.

The EGT fights on against the game line 27...Rf5! with 28 Kf1: I leave the interested reader to find the win. You are white, drag and drop the move you want to make in the above free Internet link to the colours-reversed position.

If you get stuck, try (White to play, 28?) to discover how the EGT wins as Black against any White defence. Or, of course, read the kibitzes from today's successful solvers.

PS (having read the kibitzes quickly) <Marmot PFL: Quitting this for today, due to Java problems that keep the board from displaying staying on. I had move 28 instead of 27, at move 27...Rh5 (threatening Rh5) 28 Kf1 Rh5 29 Qg1 looks awful > Bad luck. Enjoy finding the win in the colours-reversed position (assuming Crafty EGT stays up and running). - <Once> in his very enjoyable post gives a start <28. Kf1 Rh5 29. Qg1 Qb5+ 30. Ke1 a3 31. bxa3 Qc4 32. Bh2 Qxc3 33. Kf1 Qxa3>. Fritzie has read the EGT's mind until move 33!

Excellent food for thought from <Jim> and <Phony Benoni>: I leave others to explore how these lines fare against the EGT in the colours-reversed position since social/domestic duties call and (using <Once>'s material from a few weeks ago) I am in danger of overdrawing on my brownie points if I don't quit and post now.

Premium Chessgames Member
  patzer2: For today's Thursday puzzle solution, 27...Rf5!! combines the pinning and deflection tactics to win decisive material.

If 28. Bg3, then simply 28...Rh5 forces another pin which wins decisive material after 29. Bh4 (29. Nh4 Rg4 ) 29...Bg4! .

Perhaps even stronger than 28...Qf7 is 28...Qg6! when play might have gone 28...Qg6! 29. Bg3 Rh5 30. Nh4 Bxh4 .

Premium Chessgames Member
  patzer2: My attempted solution was 27...Rg4 28. bg3 Rfg7 which puts a lot of pressure on the White King position, but is clearly an inferior alternative to the clearly decisive 27...Rf5!! .
Premium Chessgames Member
  benveniste: I don't see 27. ...♖f5 as clearly decisive. The best move, yes, but after 28. ♔f1 I see a long grind ahead for Black.
Premium Chessgames Member
  kevin86: I saw the battering ram along the f-file and the two undefended minor white pieces on that file. The only help said pieces have is from the queen who cannot stop 2 heavy pieces by black.
Premium Chessgames Member
  takchess: Missed it. I'm a one trick pony. Kill the King! Kill the King! Kill the King! 8)

Perhaps there is a lesson here that I should try to understand the nature of the position first.

As the great philospher Yogi Berra once said " You can observe a lot just by looking around" .

Mar-03-11  stst: The subtlety of today's puz is that neither R sac nor doubling R works. Hence the hint for a positional play.

Others have well analyzed 27..Rf5 eying to get the W Q.

28..Qg6 looks threatening, but runs into hassles if W decides to exchange Q by 29. Qg3, so 28...Qf7 renders W nothing good to go forward.

This reflects the other side of the game - subtle, quiet moves with underlying forces may be even more annoying than fireworks.

Mar-03-11  gofer: Well, for quite a while I thought Nf3 was to be the target ( i.e. 27 ... Bg4) a) This skewers the knight and rook and b) This threatens Bxf3 winning the knight! But after much thought, I think white can wriggle out of this threat and Qh2 is the target instead!

<27 ... Rf5>

This threatens Rh5 and stops any moves like Ng5 or Bg5

27 g6/Qh1 Rxf4 winning
27 Bh5 Rxf3 winning
27 Nh4 Rh5 28 Bg3 Rg4 29 f3 Rxg3 30 Qxg3 Bxh4 31 Qh2 Bf2+ 32 Rxf2 Rxh2 winning

<28 Kf1 Rh5>
<29 Qg1 ...>

click for larger view

White has been forced to put its queen into possibly the worst position on the board. White has swapped one skewer (king) on the g file for another (queen). But things are much worse in reality.

a) while the queen is sidelined we could open everything up

29 ... d4! 30 cxd4 Qb5+ 31 Ke1 Bg4

b) The white king is now suspectible to checks on the a6-f1 diagonal and

29 ... Qb5+ 30 Ke1 seems fine for black

c) Rh5 can come to f5 creating another skewer against the king as the bishop will have to move to g3!

29 ... Rf5 30 Bg3 seems fine for black

d) on top of that there is the original skewer that I looked at on the d1-h5 diagonal

29 ... Bg4! 30 Bg3 Rf5 seems fine for black

e) we could even try to double the rooks on the h file and pound the queen to death.

29 ... Bg4 30 Bg3 Rg6!

click for larger view

Now this is probably what I would go for... ...but I have spent way too much time on this... ...time to check!

Mar-03-11  YouRang: Nice puzzle, and I thought maybe I had a solution, but when I checked it out I realized that my idea was busted. :-(

My idea was <27...Bg4>

click for larger view

and black threatens ...Bxf3 (Nf3 is unguarded because rook pin on Pg2). White can't guard the knight with 28.Qg3 because 28...Bh5! maintains attack on the knight and discovers attack on the queen.

I figured white would play <28.Rd3> to guard the knight. But I can double-kick this rook with <28...c4 29.Re3 Bc5>. It seemed to me that I'm at least winning the exchange.

However, I overlooked a better white reply: <28.e6!> attacking my rook and vacating e5 for the knight.

click for larger view

If (say) <28...Rfg7> to save my rook, then <29.Ne5!>. Black can then take the d1 rook <29...Bxe1>, but white has a sharp reply: <30.Nf7+! Rxf7 31.exf7 Qxf7 32.Be5+ Bf6 33.Qf4!>

click for larger view

One of the black bishops must fall, and white actually ends up with the better game.

Mar-03-11  JG27Pyth: Nice puzzle. Tough because it's not a mating attack. I looked for the mating and of course failed. *hits self on head* Learn!
Premium Chessgames Member
  gawain: Thought I had it figured out with 27...Rxf4 28 Qxf4 Bg5 which doesn't even come close to working. Oops. Well, at least I did figure out that trapping the White queen was the goal.
Mar-03-11  dzechiel: Black to move (27...?). White is up a pawn. "Medium."

Sorry for the "late" post, but I had limited time to look at this position last night, and did not convince myself that my line worked.

I looked at it again today over lunch with chess buddy Matt, and the best we could find for black was


but then we had white playing

28 Kf1

and while it gets messy, we didn't see a line that was convincing in the "Medium Difficulty" arena.

I'm interested to look at the comments posted by others.

Mar-03-11  BOSTER: To decide today puzzle at first you have clearly understand the difference between white passive rooks and black very active rooks on the opened files ,and second you have to notice that white queen's mobility is very limited. So 27...Rf5 is very easy to find after couple hours moving all pieces. Forget about "check, capture", but the threat is good.
Premium Chessgames Member
  agb2002: From an Open Spanish, perhaps.

Black has the bishop pair for a bishop, a knight and a pawn.

The alignment of White's minor pieces on the f file and the pinned g-pawn invites to play 27... Qf8 but White can reply with the simple 28.Bg3.

Instead of attacking the bishop we can aim at the knight with 27... Bg4:

A) 28.Qg3 Bxf3 29.Qxf3 Qf8 - +.

B) 28.Kh1 Rf5 29.Qg3 (29.Kg1 Bxf3) Bxf3 30.Qxf3 Qf7 - +.

C) 28.Kf1 Qf8 29.Bg3 Rxf3 30.gxf3 Bxf3 with the idea Be4-Qf3 is unclear.

Other option is 27... Rf5, trying to exploit the cornered position of the white queen:

A) 28.Be3 Rxf3 - + [B vs P].

B) 28.Bg3 Rh5

B.1) 29.Nh4 Rg4 followed by Bxh4.

B.2) 29.Bh4 Bg4 wins a piece (30.g3 Bxf3).

B.3) 29.Qh6 Rg6 30.Qh2 Rg4 with the double threat Rgxf4 and Rh5.

C) 28.Kf1 Rh5 29.Qg1 Qb5+ 30.Ke1 Rg4 with the better position but nothing immediately decisive.

D) 28.Nh4 Rh5 29.Bg3 Rg4 - +.

I don't know but 27... Rf5 looks the best alternative.

Mar-03-11  SufferingBruin: I had Rxf4 and tried to win like some others. I failed.

I might add that if I could solve puzzles like <patzer2>, I might never leave the house.

Mar-03-11  DarthStapler: I didn't get it
Mar-03-11  James Bowman: Wandering in the wilderness with out a clue.
Mar-03-11  WhiteRook48: aw man I failed. I tried 27...Qd7?? and the radical idea of 28...Bh3 to follow falls to 29 Bg3
Mar-03-11  hedgeh0g: Missed the idea completely. Tough, but good puzzle.
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