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Ruslan Ponomariov vs Lazaro Bruzon Batista
World Cup (2011) (rapid), Khanty-Mansiysk RUS, rd 4, Sep-08
Zukertort Opening: Symmetrical Variation (A04)  ·  0-1



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sac: 37...Nxf5+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Premium Chessgames Member
  FSR: Ouch. Pono really got a Bruzon in this game.
Premium Chessgames Member
  Penguincw: Thanks for fixing it <cg>. :)

Unfortunately, this proper puzzle was too hard I didn't even get the first move. I hope Monday is tomorrow!

P.S. If any of you are curious, this was the puzzle displayed earlier today:

White to play
S Kustar vs A Kranz, 1999

click for larger view


Jun-07-15  devere: 37. ... Nxf5+ 38. gxf5 gxf5+ 39. Kh2 Rg8 40. Qc2 Qg3+ 41. Kg1 Qh3 42. Kf2 Nf4 43. Nxf4 Rxd2+ and checkmate next move.

click for larger view

Jun-07-15  The Last Straw: This was a rapid game!
Premium Chessgames Member
  al wazir: I got the first three moves, but didn't foresee white's 40 Qc2+ Kh8 41. Ne4. In the game line as black I would have continued 41...Bxe4. If 42. Qxe4 (42. Rxe4 Qg3+ 43. Kh1 Qh3#), then 42...fxe3, and black is up a ♖.
Jun-07-15  Moszkowski012273: I think it's a better puzzle from the position one move before the one displayed.
Premium Chessgames Member
  An Englishman: Good Evening: Not sure how much credit I can claim for this one, saw the first three moves but thought it only led to a positional advantage, not a mating attack--and figured there had to be better..
Jun-07-15  Steve.Patzer: What if 38. Kh3?
Jun-07-15  Moszkowski012273: Also 39...Rg8 makes things a bit easier for black (although it was perfectly crushing already).
Premium Chessgames Member
  agb2002: Black is one pawn down.

White threatens 38.cxd4, 38.fxe6 and 38.fxg6+ (38.Rxe5 is met with 38... Bb8).

These threats suggest 37... Nxf5+ 38.gxf5 (else loses the exchange without compensation) 38... gxf5+

A) 39.Kf2 f4 wins the exchange.

B) 39.Kh3 f4 40.Kh2 Qg3+ followed by fxe3 looks winning.

C) 39.Kh2 f4

C.1) 40.Rxe5 Qg3+ 41.Kh1 Qh3#.

C.2) 40.Nxf4 exf4 as in C.1.

C.3) 40.Ne4 fxe3 wins the exchange.

Premium Chessgames Member
  morfishine: Well, both Black Knights are attacked by pawns, but White's position looks hardly defensible: The Black Bishops operate in perfect security, able to switch diagonals if needed (Ba7-Bb8 or Bb7-Bc8)

With all that said, I focused on <37...gxf5> never even considering 37...Nxf5+

<Penguincw> 25.Rxd5 wins a piece due to the fork at <e7> (which is evidently way too easy for a Sunday)


Jun-07-15  fokers13: got up to f4 and i fully intended to nab that rook on e3(missed the intermediate checks and what not though).

good enough for a sunday

Jun-07-15  mel gibson: I saw the first 3 moves easily.
How it led to mate - I didn't know
but I could see the Black Queen then lined up with the White King so it was a powerful set of moves.
Premium Chessgames Member
  jith1207: I found 4 initial moves after analyzing a lot of variations and then decided to play 'guess the move' till mate. I got few moves in wrong order but got what Black was trying to do move by move. Still I missed the last move by Rook to h3 where I got stuck and did not spend any more time to find it out. Good enough that I was able to follow the right path.
Premium Chessgames Member
  patzer2: <morfishine> <With all that said, I focused on <37...gxf5> never even considering 37...Nxf5+> That was my solution. I envisioned the simple 37...gxf5 38. cxd4 f4+ 39. Kh3 fxe3

Deep Fritz 14 assesses the game move 37...Nxf5+! as strongest, but confirms the simple 37...gxf5 is also decisive:

Ruslan Ponomariov - Lazaro Bruzon, World Cup Khanty-Mansiysk RUS 2011

click for larger view

Analysis by Deep Fritz 14x64 (@ 23 depth on 4 CPU i7-4790):

1. (-8.05): 37...Nxf5+ 38.Kh2 Nxe3 39.Nxe3 Bxe3 40.Rxe3 Qf6 41.Kg1 Qxh4 42.Nxc4 bxc4 43.Qf2 Qxf2+ 44.Kxf2 Rd1 45.Re1 Rxe1 46.Kxe1 Nf4 47.Bxc4 Rc8 48.Bb5 Rxc3 49.Kd2 Rxf3 50.Bxa4 Rf2+ 51.Kc3 Ne2+ 52.Kd2 Nxc1+ 53.Kxc1

2. (-4.86): 37...gxf5 38.Qb1 Bxf3 39.cxd4 Qxg4+ 40.Kh2 Bxg2 41.Bxg2 exd4 42.Re5 Qxh4+ 43.Bh3 d3 44.Nf3 Qf2+ 45.Bg2 Bb8 46.Be3 Bxe5+ 47.Nxe5 Qh4+ 48.Kg1 Nf4 49.Bf2 Nh3+ 50.Bxh3 Qxh3

P.S.: When I force Deep Fritz 14 to evaluate the final position in it's analysis of 37...gxf5 above, the program finds a mate-in-ten (i.e. after 50...Qxh3 in the analysis above).

Premium Chessgames Member
  PawnSac: < FSR: Ouch. Pono really got a Bruzon in this game. >

so then the pun you are suggesting for this game is...

< Bruzon Pono > ?

Premium Chessgames Member
  Tiggler: My choice was 37. .. Nxf5 38. gxf5 gxf5+ 39. Kh2 Rg8

This seems to be at least as good as the game continuation.

Jun-07-15  schachfuchs: I got this Sunday puzzle until 39...f4 seeing that it's mate if the Re3 moves or after 40.Nxf4 exf4 41.Rxe6; I give myself only a minus because I didn't consider the 'Zwischenschach' Qc2+ - a mistake which happens to me too oftenly!

Nice game and nice puzzle! I wonder if Bruzon had Nxf5 aldready in mind when he played 35...Qg7(!) ?

Premium Chessgames Member
  morfishine: <patzer2> I appreciate your analysis and always enjoy your posts. The move-order I “saw” or visualized was 37...gxf5 38.cxd4 <38...Bxd4>

click for larger view

Then after 39.Qc2 Black plays 39...e4
Though I felt intuitively it was stron, the branches became too confusing; Aided with a PGN viewer, I found one line: 40.Be2 fxg4 41.fxg4 Qe5+ 42.Kh3 Bxe3 43.Nxe3 Nf4+

click for larger view

White King is forced to a Black square where an exposed check awaits


Premium Chessgames Member
  chrisowen: Ship delved 46...Nd3 47.Ne6 Nxf2 48.Nxg7 Rxg7 47.Rxe5 Rxf3 rook in front at this point infer tile ground ash mind segregate am cave aids nectars 47.Ne3 or betcha grin an guessed 47.Ne4 Qg6 48.Nd2 e4 49.Nxf4 Rxf4 50.Bh3 exf3 exchange and pawn ahead again ive cad beds dutiful 47...Nd3 in digs again ash hove dued returned 48.Bxd3 Rxf3 49.Qg1,

Qf8 50.Bf5 Qd8 has to chuck g8 queen away angle am ghostsip burden offset i d8 ash h4 hint we edificed in ogles son ar blip ash horde in hammer centre am f3 digs arrivals 48.Nd3 Rxf3 49.Qg2 or better am give egg hope bullshine 49.Bg2 Rxf2 50.Nxf2 Qg3+ marshall om good mate in seven again acts hogroasts 49...Rh3+ mate again soon i g2,

lesson learnt queen accord grab ave and mates at am blam blap as time monarch i g1 ah trade a8 and c4xd3 black wins fetch eg mate-in-eight and five folded ive dip after ash c4 in d3 back ar at ha bans la ship bath since weave band over balance dids one up at feds feeler g7 bain do da g3 ship cap again quoff i c2 arrives h8 at safe whilst counter-part angles son at h2 bone of contention it zip in zag free hoods la ship vehicle back gamed for dead flight solemnly i coony eyes cove dote choice ahha f5 shackles ie wide berth am car got hove thin hi light monarch unsafe b7 angles a7 both at arrived good an belives am win e4 one advance i shape black comp at wads exchange wallowed in swamp wins the sell am wads at brevity ramble give at spark in f3 as h3 i on hood horde in hammer g7 as switch inch free to by with ave that in mind over to binds elegy rates wads am winch an erode away angled mind jangle g7 arrive a7 good i was eg goodness sense cosily am route won i be d4 proof knight wins am back que need laned by d8 amongst dark docks at f8 ables fan-fares also good flurry it zip in biff sunfire f8 down an stencil fancifuls am decisions selelct over fated red d4 coked for back rused bay on demand ive skim palm cone ive d8 rook dark dock infer tile ground in fly am h3 at wins an gave one gannet aorta live at gain over am do d3,

light fang gaffer tile ground g7 one again an good move f5 etch an gadzooks am d3 fangs add nip ha in hold off drive catch bath mind over depreciated by returns f8 at wins am f3 an peck away angles stored good as bargain a8 history gain fag pin car elegy rates equate g7 angled reclusive boil ive cub da house dine diffuse ramp mash in tier raid for said fangs treat choose fog ja f3 ship lab over at beyond b7 angles a7 also good trivial reburden it envision select ive over rad case changed gold f5 cup f4 arm folds eg win kind re to hit head ive hove at h3 am win back pond basically won by degrees f8 an g8 slim man pop low ave learn old for drive deed facets again cruise am h3 ooh at wave flap pave fold pig in ash poke f5 badge bud clinch eg h3 at win po face.

Jun-07-15  CP6033: I found Nxf5+ and gxf5, both fairly clear. Quite a nice combination though!
Premium Chessgames Member
  Jimfromprovidence: I'm late to the party, but earlier it looks like black missed a queen trap after 34 b4 with 34...Ne2+!

click for larger view

White can take the knight on move 35 with any of three pieces, but black wins the queen with 35...Bd4.

Premium Chessgames Member
  Tiggler: How come <Jimfromprovidence> always sees something others overlooked (even when he is late to the party)?
Premium Chessgames Member
  morfishine: <Jimfromprovidence> Nice find! You are one my favorite posters due to ideas like this

<Tiggler> I may be wrong on this but perhaps <Jim> devotes extra effort to going over the entire game as opposed to just analyzing the puzzle position. I know I have gotten away from looking at entire games (POTD)


Jun-08-15  Cheapo by the Dozen: Total whiff for me. I would have played ... gf over the board.
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