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Lubomir Ftacnik vs John Nunn
Vienna op (1986), Vienna AUT
King's Indian Defense: Orthodox Variation. Classical System Misc. Lines (E98)  ·  1-0


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sac: 31.Nexf4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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May-14-16  Cheapo by the Dozen: Unlike <diagonalalley>, I do not think this is one of the positions in which I'd have channeled my inner Rudolph Spielmann and sacrificed on faith.
May-14-16  Al2009: Ftacnick was surely in zeitnot, because he could play 33. Nxg6! (why 33. Rf2?) with no fear for 33...Qxf3+

After 33...Qxf3+ 34. Rf2 Qd3+ (34...Qd1+ 35. Be1 Kxg6 36. Rxh6+! Nxh6 37. Qxd6+ Kh5 38. Qe5+ leads to mate) 35. Kg1 Qd1+ 36 Kg2 Qg4+ 37. Kf1 Qxg6 38. Rg2 Qxe4 (there are no more checks after 38...Qf7+ 39. Kg1 and then 39...Bd7 40. Rhg5! ) 39. Rxh6+! Nxh6 40. Rg7+ Kh8 41. Qxh6#

Premium Chessgames Member
  whiteshark: As it turns out, the commitment is a bit of an issue...
May-14-16  Ayaend: <3 25.Bf8! <3
May-14-16  leRevenant: <nasher: What was the reason white played 33 Rf2 ?> To protect the pawn on f3 and free up the knight to hop into the fray.
Premium Chessgames Member
  morfishine: "Nunn Too Soon"

I got the first two moves but not 33.Rf2

Do I get a Lolli-pop?


May-14-16  stacase: Getting the first four moves on a Saturday puzzle works for me.
May-14-16  ndg2: What if black plays 32...Rg5 instead of Qf7?

click for larger view

Then we have this cute sequence of sacs 33.Rxh6+ Nxh6 34.Qxh6+ (not only Mondays have queen sacs!) Kxh6?? (Kg8 ) 35.Rh2+ Bh3 36.Rxh3+ Rh5 37.Rxh5#

click for larger view

May-14-16  znsprdx: wow I'd never considered giving up the long diagonal control

32. Rf2 beyond me = but it worked

May-14-16  drollere: black played a queen rook down the whole game.
Premium Chessgames Member
  RandomVisitor: Black has defensive possibilities with 28...Qf6 that make the earlier move 27.Ndxf4! much better for white.
Premium Chessgames Member
  RandomVisitor: 21...h6 followed by 23...hxg5 have to be considered losing ideas. Better for black was something like 21...Bd7 followed by activating the sleeping queen rook 22...Rc8.
Premium Chessgames Member
  patzer2: For today's Saturday puzzle position, I went with my instinct and played 31. Nexf4 exf4 32. Nxf4. I didn't see a forced win, but I figured Black's exposed King and the pressure White could quickly bring to bear on the weakened Kingside was easily worth giving up a Knight for two pawns and the attack.

An instructive, strong move which I missed here is 33. Rf2! , which demonstrates how White precisely builds up his attack while walking a fine line between exchanging material and preparing the attack.

The purpose of 33. Rf2! is to prepare to capture the Rook on the next move with a much stronger attacking position.

In addition to <RV>'s improvement 21...Bd7 =, activating the Queen side pieces, instead of 14...Neg8 I slightly prefer 14...a3 as in A Gutov vs I Saric, 2010, Gelfand vs Kasparov, 1990 and J S Morgado vs R G Alvarez, 2000.

Premium Chessgames Member
  morfishine: <ndg2> Thats gorgeous
Premium Chessgames Member
  agb2002: White has a bishop and a knight for the bishop pair.

The best defenders of the black king seem to the pawns on e5 and f4 because they hinder the maneuvers of the white pieces. This leads to consider 31.Nexf4:

A) 31... exf4 32.Nxf4

A.1) 32... Rg5 33.Rxg5 Qxg5 34.Rg2

A.1.a) 34... Qxf4 35.Rg7+ Kh8 36.Rf7+ and mate soon.

A.1.b) 34... Qe7 35.Rg7+ Qxg7 36.Bxg7 Kxg7 37.Qg3+ with more or less balanced material but a dangerous initiative. For example, 37... Kf6 38.Qg6+ (38.Qxg8 Bh3+ - +) 38... Ke7 39.Qh7+ Kf6 (39... Kf8 40.Ng6+ Ke8 41.Qxg8+ Kd7 42.Qf7+ Kd8 43.Qe7#) 40.Nh5+ Kg5 41.Qxg8+ Kxh5 42.Qf7+ Kh4 (42... Kg5 43.Qe7+ wins the d-pawn at least) 43.Qf6+ Bg5 44.Qxd6 looks winning.

A.2) 32... Bd7 33.Nxg6 Kxg6 34.Rg2+ Kf7 (34... Bg5 35.Rhxg5+ wins decisive material) 35.Rxh6 Nxh6 36.Rg7+ wins decisive material.

A.3) 32... Rg7 33.Bxg7

A.3.a) 33... Kxg7 34.Rg2+ Kf7 35.Rxg8 Kxg8 36.Rxh6 with two extra pawns and a winning attack (36... Qg7 37.Rg6).

A.3.b) 33... Qxg7 34.Rg2 Qf8 35.Rxg8 Kxg8 (35... Qxg8 36.Rxh6+ Kg7 37.Rg6+ wins) 36.Rxh6 with the same conclusion as A.3.a.

A.4) 32... Rf6 33.Bxf6 Qxf6 (33... Nxf6 34.Rxh6+ + - [R+2P vs B] and a winning attack) 34.Rg2 Ne7 (34... Qxf4 35.Qxf4 wins; 34... Bd7 35.Rg6 Qf8 36.Rxg8 as in A.3) 35.Rg6 Nxg6 36.Rxh6+ Kg7 37.Rxg6+ wins decisive material.

B) 31... Rf6 32.Rg2 probably ends up transposing to A.4.

Premium Chessgames Member
  agb2002: <morfishine: <ndg2> Thats gorgeous>

I fully agree!

Premium Chessgames Member
  chrisowen: A hi f4 offer flurry x a while good rev there bus bid kids right rev left over good bids we move que hip e7 egghints of i f2 off f6 fluffer tile ground rove given f7 fluffer then i g2 ogle bid d4 drove que bests b6 buffets bid go ive lo e1 ea x a while good rev ensure votes verdict knight bid f4 off flurry it a grit a6 cornea it a while good rev cost f5 feints wins flight queen wushi f6 fluffer tile ground i vote bid job bent vide good bin job just not rev there jot vim bid give f5 jut off bow good gen from lucid ive christ display it a while good rev flurry it ah hi vim rev booted it a kin i lick kiss went emulsion like over there move v que hid give lid i hip quod whoosh i bend wushi jug f4 offer flurry x a while good rev there bus f4 ive float kids right rev left over under over otb f4 offer little resist invest knight for two punts line front off i c2 occults lid event bid i f2 off bid jot wot wushi vent build bend job tomb bot riven bon tub but join vim bong tong bid vide bung gen bent goof off f4 first bend go h7 higgle hoodment que problem puzzled it feel like invest fine go vide there f8 better off fruitions vide there both dont get out of trouble vote vims light mans wins wushi job gen get bong effort bill ive bind roi f4 offer f6 fluffer vent flurry x a while good rev bent give frequent demise vent bid free knight que give from rule go build lucid ive christ display it a while good rev f4 offer flurry x a while give there bus focus flush duo que f7 flogbind i f2 off there f6 fluffer bish bind jock croc pot knight plus que bid go f6 fluffer i g2 ogle bid d4 drive b6 bests buffets binds new i e1 ea x a cut I cure vide ploy it a while 6a it and x a while good rev there bus focus dock f5 wins flight queen by g3 gosh i d1 dip que bid d4 drive then f5 feints buck runk go e3 else quick return ive go e2 ebb then bids lights wins buck runk bid f8 fleshouts mins vote there bus bid dock front g6 chin ogle check it switch inch bid rev bind h8 hooflongs there e6 efforts queen h6 huffles f8 fleshouts mins vote cost dock front bids i e2 ebbs wins new off free won good flight ever co bid cull ive go gutoff light men go cop ok rev ogle lo gonglip end d4 drive bids oomph bid else i dipoff i e2 go event there good i cutoff link delve exactly net joy dutiful i rev let re go d3 duck f5 feints key it a while good rev i do go flight vide infer tile ground vote kinship h8s tuck bid hooflines i c1 co coves end cervix a cut I vim curry it a while good rev cull clink bid good ghostlip i g2 ogles lid bind evermore link gores bid f4 first lip hood go f7 floggers bid gone que verdict rumble give go gutoffs bish done free cud cock muscle off f4 finds flurry x a while good rev f4 offer vent bid theres f7 floggers bid i f2 off focus f6 fluffer gives f6 fireoff i g2 ogle bid d4 drive bun qu g3 rug done bid i f2 off bid d4 drive checks there kinship i e1 ea it a while good rev find f5 feints tell f5 gain fetter chooses whoosh i go e3 eggs quick vim i e2 ebb bid i votes lights wins off f8 fleshhood dock invest given g6 lend ogle there bus bid dock wins i e2 eve there bus win ebb i;
Premium Chessgames Member
  chrisowen: 31.Nexf4 exf4 32.Nxf4 Qf7 33.Rf2 Rf6 34.Bxf6 Qxf6 35.Rg2 Qd4 odd dives 35b6 36.Ke1 B6 37.Rf5 wins flight queen give f5 feints bid go good lid gutoff 36.Qg3 Qd1+ donned it ok rev ogle there i do que bid dove of piece checks lid offerup 37.Kf2 Qd4+ drive beeline there odd ebb drove lid duddy it a while good rev dudes mind vote bid evermore 38.Ke1 Bf5 39.Rxf5 Qe3+ eh ebbs quick vim bid vide there go eggs lid hi else where return ie good 40.Re2 po ebb flushy it a while good rev i e2 egg bid there bus i etc reenter orbit ok rev ogle go c1 co check bid ive kinship protect iffy it ok re ogle finish there throws lid go lo f8 fleshhood queen g6 check gentles lo horse e6s wins feint efforts i f8 finish off fleshhogs i e2 eve front wins lo of join flow vim flower jink flimsy it a while good rev jello f6 mould fluffer tile ground vote vides nip lift jog on good vim by just hip perloins kim of judge plume cone que cervix a cut I vim curry it a while good rev f4 float demon love tour betters rove winch bid go puzzle higgle venter piggle feinted it feel like fine bell oh thoughtless bid for que lid dock info key it a while good rev i f2 off f6 fluffer queen plum i remember vote norm disk fob roves dome cone you cervix a cut I vim curry it a while good rev mind judge mint vote wushi blood doth go goth hid gives hurry it a while good rev kids lo win lines civic que bid d4 docks bid dock fog covet dour close ok rev ogle clove field retoss bind f5 feints rump que hip jive relike winch hood rub i c rum coves essay it ay indeed it edge vent rev info glock ques lo f3 off dock two pawn infer tile ground vote there bus cost dock float roves chest rev lo lid dour fog hind for que bid d4 drive runs go e3 ebbs quick vim diving it ok rev ogle go vet duck other bind vet rev man oboe f5 feints bid vims lid go histories bid dock f5 flurry it a while good rev love linger build dome re bus i e2 eve i f2 off bid focus que cervix a cut I vim d4 drive lined it a while good rev core cord bid d4 dotes mind judge vote join vides epicentres win key it a while good rev bent nosh mins vote tuck buck pebbles won other bind rev oboe bood ques bid ive there bus dock fog free moon dint boogie give h5 hood huffle feint give f5 flurry it a while good rev oftened it feel like find vim bell vide corks dote mince off flubb i c crib vide off f4 offer flurry x a while good rev bid give off f4 frees wins que hip fog f7 flungout I f2 off vides wins lo vet f6 fluffer tile ground vote bids lid go f6 footoff i g2 gib lid d4 drive b6 there buffets bid good go i e1 ea x a while good rev it a6 it affirms rev i f5 wins flight queen go g3 guts i d1 dive i f2 off bid d4 drove i e1 ebbs f5 feints give f5 fences bid go e3 ebbs quick vim i e2 ebbs win f8 fleshhood queen g6 gutoffs dock kinship h8 hoodhints horse e6s win fence efforts whoosh queen h6 there huffles bid link f8 fleshhood theres wins bid good over i e2 ebb docker verdict piece goods win;
May-14-16  mel gibson: How come I don't get some Tuesday puzzles but I saw this straight away?
May-15-16  Al2009: <patzer2>

33.Rf2? is just a blunder, it is not a strong move.

Read better and see my analysis above after

33. Nxg6!

May-15-16  Moszkowski012273: I disagree,, 33.Rf2... was pretty awesome.
May-16-16  Al2009: <Moszkowski012273>

You can disagree, but you are uncapable to show me a good analysis, supporting your idea. Sorry, chess is like math, it is not simply "opinions", it is analysis and calculations. That's the same with <patzer2>, patzer2 will always remain a patzer, because if you want to play chess at good levels, you have to make accurate calculations and analyse the variations...

May-16-16  Moszkowski012273: I looked at your analysis it's quite faulty, perhaps you should double check before posting. But good luck with that whole "judge and jury" thing you got going on here.
Premium Chessgames Member
  AvidChessMan: I can't explain why, but I really liked 31. Nef4 ef4 32. Nf4. I could not see past that. And, I could not see any better options for white. The only reason I can think for 33. Rf2 (which I agree is not a sharp move) is to protect the b pawn and prevent the f4 knight from a future pin, in case of a pawn exchange, vies-a-vie white bishop to g4.
May-17-16  Moszkowski012273: And yet, it IS, a very sharp move.
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