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Anatolij Bannik vs Viktor Korchnoi
URS-ch21 Kiev ,URS-c (1954)  ·  Alekhine Defense: Saemisch Attack (B02)  ·  1-0
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sac: 21.Rh7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Apr-20-16  stacase: Fun King chase.
Apr-20-16
Premium Chessgames Member
  Appaz: Definitely not an easy/medium. I found the correct first four moves, but gave up since I don't have the strength to evaluate the position as won.

It shouldn't take master strength to solve a medium POD.

Apr-20-16  dfcx: The black king is exposed sitting alone. This gives white a chance to force it into the open.

21.Rh7+ Kxh7 22.Qxf7+

A. 22...Kh8 23.Rh1+ Qh5 24.Rxh5+ gxh5 25.Bd3 and mate next

B. 22...Kh6 23.Rh1+ Qh5 (Kg5? 24.f4#) 24. Qf4+ Kg7 25.Rxh5 gxh5 26.Qg5+ and white should win the end game

Apr-20-16  thegoodanarchist: Game was played before Korchnoi got really good.
Apr-20-16  saturn2: After the first two moves 21 Rh7 Kxh7 and 22 Qf7+ Kh6 white has time for 23 f4. Now if black interposes the Queen on h5 after the rook check then BxQ.
Apr-20-16  thegoodanarchist: <Appaz: Definitely not an easy/medium. I found the correct first four moves>

I would count that as a solution. The combination is played to gain some advantage, but the side that is weakened will sometimes play on and on. If it takes another 100 moves to force mate I don't think finding them all is necessary, even if it were a Sunday.

Apr-20-16  YetAnotherAmateur: So after the initial combination, white's traded 2 rooks for a queen and a pawn. While I admit it's kinda nifty, it also doesn't provide a clear advantage (as evidenced by the fact that the game went on another 14 moves).

What I think really kills Korchnoi is his 29. ... Nd8, which effectively puts his rooks and knight out of play.

Apr-20-16
Premium Chessgames Member
  mcguigan97: I got the first 7 white moves ... after that it was beyond my abilities...
Apr-20-16  AlicesKnight: <saturn2> If 23.f4, what happens after 23......Rf8? If 24 Rh1+ Qh5, a WB capture allows Black to capture the WQ.
Apr-20-16  saturn2: <AlicesKnight> White can play 25 Qd5 But I see that white does not get Queen for rook. Instead it results in Q+P vs 2R and a advantegous position for white.
Apr-20-16
Premium Chessgames Member
  Appaz: <<thegoodanarchist> <Appaz: Definitely not an easy/medium. I found the correct first four moves> I would count that as a solution.>

I doubt if I would have played those move in a game even if I had seen them. The unclear position (in my world) would probably made me choose a safe and weak line instead.

Apr-20-16
Premium Chessgames Member
  Castleinthesky: I'll give myself credit because I saw the combination at least until the 5th move (afterwards my eyes misted and my brain exploded). A good example of "distraction."
Apr-20-16
Premium Chessgames Member
  kevin86: White sacs the rook to be able to chase the opposing king while black's forces are parked.
Apr-20-16  Chess Dad: <I got the first 7 white moves ... after that it was beyond my abilities...>

After the first 7 moves, white has multiple moves that win.

At move 28, Bd3 forces Kd7, then Bf5 skewers the King to get the rook. It's not quite as good as what was played, but it's still a winning advantage. (+2.16)

But then again, what was played wasn't quite as good as 28. Qh3+. I have that one at +5.1 vs about +3.4 for 28. Qg4+.

Apr-20-16
Premium Chessgames Member
  Jimfromprovidence: Just an observation, but it's cool to see some newer kibitzers posting today.

In that vein, <CliftonJ> has worthwhile posts explaining why 20 Rh7+ directly does not work.

Apr-20-16  Marmot PFL: easier than yesterday i think.
Apr-20-16
Premium Chessgames Member
  chrisowen: Warts and all as h7 harangue blemash ave an dove then do hog deep um vagabond ave warts wrath bag um mug klad dunk ham as hank mud quota escry yes flap pack cull cover am love at h7 trade ash queens f7 fanfares huffle go bands h6 heavens above reload castle at h1 hone h5 houses around ash f4 arm float take h5 heavens above and maneovre at angle vents am bless quota ques g5 lare gleans off at offer maneovre then and can get enact ja monarch have am clean an trap braved it ok ave ogled it infer an f3 face off lare at has got angle vent ado gained it ok ave ogle f5 lare feeler as lake gain it ok ave ogle at h7 blemash am bow wrath brave rat war boot an do vet hospital vamooses headlong at bar then as hollow am good f7 fanfares ave war at hone at h1 hovel an grab ave went brag ave tag game mat marg h5 toots heavens above bow an gum ave mug ukelele mud klad dash hent up hone ave reload at h1 ho much am man an quota full escry yes well vamooses whoosh h7 headlong hank mud queues am da ques off angle vent ado ya flow flap pack cover vale go bunt am love at h7 blemash as que off at f2 offer tale ground over ash h8 harangues around and best um pud have four one focus fluffs at o f2 offer tale ground over ash h8 harangues around and equal it aloof ave lare then etc able ware bus tore vam core load event ado vent delve am cad cascade an cap ave at cup an guffaw as heart ave at fad able at gangway ash farm among duffles coat pull I do at carafe pour on corn covet hocus pocus ash good I duffles coats among dancer gave I be at quota an ash am koinus agrees ala vamooses whoosh am prang bores h6 huffles am glade buffets around ash head at fad an fag as channels ave bad gangway am trades g7 gangways head h5 houses around heavens above bad at I f2 any glass eel wax a cut i curry favour ave then angle g6 guffaws trade gutoff an vet h6 check heavens above then ash am monarch glade f6 fanfare ash f4 arm float an as have checks g7 back angle vent I h2 up het up back c5 creaks am be at h7 harangue;
Apr-20-16
Premium Chessgames Member
  chrisowen: I 21.Rh7+ as hand hood held hades had head honda head honcho co do hog deep horde an hammer f7 fanfares castle one hot deep hud hewd hayday castle h7 harangue headlong happened it edge vent at hatchets hogdeeps heelmans hogjammy as head hellheap heaphand headques headsway heaterup heartash humdrums have he guff I f2 offer tale ground over ash h8 harangues around over equal it aloof ave lare at load I h1 hone henge flog h5 heavens above at hud fag flung frag feel as hoghangs hung change chase vent ados whoosh h7 hoofers heffa lump h5 houses around over etc able ware bus am chase vent ado and eventual it aloof ave lare expose monarch off at f3 offer tale ground weave net around over then am bless am effort effront effront an gush gash hanghogs abacus count kubble an dash off at heavens above over c5 church of reason effaces off tender pot hone reload castle h7 headlong as trade ash queens f7 fanfares huffle go bands h6 heavens above reload castle at h1 hone h5 houses around ash f4 arm float take h5 heavens above and maneovre bless quota ques g5 lare gleans off at maneovre then and can get enact ja monarch at have conch ave clean as then am um trap brave infer an f3 face off lare at has got angle it ok ave ogle f5 lare fervent feeler as lake at h7 harangues around blanker buck bunk bark do hog deep events bag aha vamooses whoosh h7 be I 21...Kxh7 22.Qxf7+ hush am fanfares arrive fruition as have floggers am manage at hove fan dangle tooth am as ho of at he 22...Kh6 23.Rh1+ ho hovel I be proof lare at hope at have but as ho ho velodrome at hank I ha he go by hum 23...Qh5 24.Qf4+ I offer tale ground over am bless ash farms and float ash frame vent force at hove flood hud at agog 24...Kg7 25.Rxh5 gxh5 26.Qg5+ gleans am I mend jangle move mens rea agos getups have gorges am bless angle vent ados among have getter at hovels then as white gavers check around then am clock do hog deep and gets teak monarch ave chooses whoosh at open and as have move at 6 dank affable vents cable vamooses whoosh am bale ware bus tore vent ado core load dank an dusty prang bore f5 feeler lake key an docker e7 ment ave quarter back at f3 offer up as whoosh able victor about viking free flap engage bones am rev vagabond blank vow am crab da vows balls walled it edge vents ado lot ha pugs wash am cooped it ok ave ogle an up gas hup hup bath am but back barge las hups at have band babel towers h7 harangue around overs wallowed it ok ave ogle then dupe fled it edge vent ave chooses whoosh ave roves am ash as h8 headlongs am over dark dock bath am rad i f2 offer duo toot thoughtless am dote back ooh too free as whooshes toot ash as cupper dance chase vent ado doth am rambo rumba only am cosy ave lyeth under as am um reembargo revs wash an covet as conc bot got puds chase vent ado would focus hunts hull mend jangle harry four job at hand do dark roves coves have clean blunt an god then dare whoosh am got doth am dote band capture um uv ray an toot h5 pluck heavens above and pare over glad pots my teak lane costead banal b6 bangles around buffets am barge mend fane um dote an danes mary am f7 fanfares bells kat palm cone two ebb um bag game code prang block pace god then am rodes afar often dour dames at runs rans would moan go away I hate as longers band re co focus am fode gain am von dour drove lanes but hook it ok ave ogle mutton mass ave marge toot h5 heavens above joculars entry am route then dous nous no energy rate vents cages baffle bat flunk fab ball free fabulous and pams I remember duffer f7 hush you float fun fungus buffer an f3 face foots am an gg afloat agog affable good hood h5 heavens above car wrack as ma vow am bless castle core load hone pams I remember ave cab add odd bod back bodes wells cab order ramble back as h7 harangue at have bar jam ash ar lot ukelele raj you know lecture;
Apr-20-16
Premium Chessgames Member
  Est2002: If this was supposed to be easy/medium puzzle then I don't think I'll have a chance tomorrow!
Apr-20-16  stst: A R-sac may do it:
21.Rh7+ KxR (else, only move is ......Kg8, but 22.Qxf7#) 22.Qxf7+
(A)
22................Kh6
23.Rh1+ Kg5
24.f4#
(B)
22.................Kh8
23.Rh1+ Qh5 (only defense)
24.RxQ and Black is Q-less gxR
25.Qxh5+ etc

Another route goes with a Q+ first:
21.Qh6+ Kf6
but this will let the K out and the line will go longer, esp. when the K slips into d7 eventually.

Apr-20-16  stst: Got it - the Black Q-less line... the older Korch resisted quite a long wind after going Q-less!!
Apr-20-16  Moszkowski012273: White kinda lost the thread toward the end here.
Apr-20-16  CHESSTTCAMPS: Black is up N+P for a bishop, but the black king is badly exposed with white controlling the open h-file. How does white finish? On 21.Qh6+(?) Kf6 the king is well-protected by the BQ and the king can slip back behind the lines at d7 or e7 as necessary.

Bu 21.Rh7+! Kxh7 22.Qxf7+ pulls the black king to the edge where it is most vulnerable:

A.22... Kh8 23.Rh1+ Qh5 24.Rxh5+ gxh5 25.Bd3 any 26.Qh7#

B.22... Kh6 23.f4! (my first choice, the forcing 23.Rh1+ runs into tough defense with Qh5 24.Rxh5+ Kxh5 [but not gxh5 25.Bd3 forcing mate] 25.f4+ Kh6) Rf8 24.Rh1+ Qh5 25.Rxh5+ gxh5 26.Qxh5+ Kg7 27.Bd3! Rh8 (Rf6 28.Qh7+ Kf8 29.Qh8+ wins a rook) 28.Qg6+ Kf8 29.Bc4 Nd8 30.f5 Rc8 31.Be6 Rc7 32.c4 and it appears that black gets squeezed into zugzwang.

Ok, I'm either missing something much easier or this problem is seriously underrated.

Apr-20-16  CHESSTTCAMPS: Now I see that my "improvement" 23.f4 fails to 23... Qe3+ 24.Kb1 Qh3
Apr-21-16  TheBish: <CHESSTTCAMPS: Now I see that my "improvement" 23.f4 fails to 23... Qe3+ 24.Kb1 Qh3>

Yes, I was thinking the same thing, that I had found an improvement over the game with the preparatory 23. f4 to win more material, but then I saw Black's queen check (always check for checks!) which spoils it.

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