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Poltoranov vs Leonid Stein
Ch Armed Forces (1955), URS
Indian Game: King's Indian. Fianchetto Variation (A49)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Feb-16-16
Premium Chessgames Member
  whiteshark: <25...Nc1!>, and that's it!
Feb-16-16  Nick46: Easy, coz not too many candidates on their starting blocks.
Feb-16-16  Bubo bubo: Missed that one! My first thought was of course <smothered mate again - booooring!>, but on noticing that the white queen guards f2, I went for 25...Nf2+ 26.Kg1 Nd1+. Nice idea and quite similar to the solution, but unfortunately the ♕ still guards f2, so no Qf2# after 27.Kf1. What a bother!
Feb-16-16  wooden nickel: After a failed attempt on a smothered mate and keeping in mind 25... Rb8, I missed the simple 25... Nc1, finally considering 25... Nf2+ 26.Kg1 Nd1+ 27.Kf1 (would make a good puzzle)


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Feb-16-16  CHESSTTCAMPS: Black's nasty knight works well with a queen against a blunted bishop and a weakened king position. In this tactical setting, one would typically look first for a Philidor's legacy (25...Nf2+ etc), but in this case white's queen guards f2, taking away the smothered mate. Black should have no trouble finding a simpler, winning shot:

25... Nc1! breaks the back-rank defense:

A.26.Rxc1 Qxc1+ 27.Bf1 Qxf1#

B.26.Qd2/e2/f2 QxQ wins

C.26.Qxa5 Rxa5 wins

D.26.(other queen move) Qe1+ forces mate.

E.26.(other move) Nxa2 wins.

Feb-16-16  saturn2: After 2 minutes or so i saw Nc1. The move is a double attack both on whites queen and backrank.
Feb-16-16
Premium Chessgames Member
  jith1207: This is a good puzzle. A single move attacks the Queen and the king. And you can't save both.
Feb-16-16
Premium Chessgames Member
  paulalbert: As mentioned by others, my first instinct was to go for Philidor's Legacy with Nf2ch, but saw immediately that white Q on a2 prevents its working, so looked for shield to allow Qe1ch by black. Nc1 does the trick! Instructive puzzle!
Feb-16-16  transpose: I was blinded by my love for smothered mate.
Feb-16-16  BOSTER: I saw double threat in the game Gunina vs Lu Wenjun , Women's World Team Champ , 2013 28. Nd5 , but didn't see it today in POTD. Maybe should I play in women's tour.
Feb-16-16
Premium Chessgames Member
  kevin86: No smothered mate, but the knight moves to stop up the drain...attacking queen and threatening mate. There is no escape!
Feb-16-16  Herma48852: <transpose>: I was blinded by my love for smothered mate.

^^ This

Feb-16-16  King Harvest: Beauty.
Feb-16-16
Premium Chessgames Member
  WorstPlayerEver: I totally missed it while this guy was talking about interpolation. Little bugger.
Feb-16-16  psmith: Focusing on the smothered mate, I missed the obvious 25... Nc1. Instead I went for 25... Rb8 with the idea of 26... Rb2 followed by smothered mate (or win of Queen). In fact this works. But it's not the most efficient...
Feb-16-16
Premium Chessgames Member
  patzer2: In addition to the decisive 25...Nc1! move played in the actual game, Black also can also win with 25...Rb8 and 25...Nf2+ .

Here's the result of my move-by-move look at the two winning 25...Rb8 and 25...Nf2+ alternatives with Deep Fritz 15 at 20 plus depth per move:

25... Rb8 26. h3 (26. Rb1 Rxb1+ 27. Qxb1 Nf2+ 28. Kg1 Nd1+ 29. Kh1 Qe1+ 30. Bf1 Qxf1#) 26... Rb2 27. Qa3 Qxg3 28. Qxb2 Nxb2 (-11.96 @ 21 depth, Deep Fritz 15)

25... Nf2+ 26. Kg1 Nd1+ 27. Kf1 Qd3+ 28. Qe2 Ne3+ 29. Kf2 Qd4 30. Qxe3 (30. Be4 Nxf5+ 31. Kg2 Qxa1; 30. Ra3 Nxc4+ 31. Re3 Re8 ) 30... Qxa1 (-12.32 @ 20 depth, Deep Fritz 15)

Feb-16-16
Premium Chessgames Member
  chrisowen: Bang lecture vet wintry bruv band pew as tent it vociferous again bids kim of lady and jungle palm cone knight wins call as nearly am route won clinch eg wins lady i a2 ola get able her majesty royal it a link again coup mister quagmire quip an a2 gain ooh agog as right ricky micky flicky am room on i a2 grave invest ramble give ointment you lay it edict have vet an yes as i c1s call i wag an bruv vet o i a2 and quick demise vet on as ha va va voom invest her majesty ramble give cuz ooh tricky am route one pal nip line at oh again were ointment then am fly quagmire get able link win cut off oy wats ow am holy fires burning it eon vet aorta clinch aint eg as i c1 calls nearly am route one win cascade i eminate balances out new am vet please your grace again nova zag as tells call i wag ramble again kaputz add pin am rush mind ointment ramble gives parks pace it eddy am waves have at biff buff ya na moots cafe i gack gun i vite vite as hurry back flick knife rav vat dumb dumb an ive as i c1s call i wag as nearly am route won as net her majesty band ive vet apine cad bap pew pa wet pew wait low ave learn am route won as i c1s call i wag her majesty ramble give win early am as her acts lady as win eve at ash am bin i a2 grave falls failsafe caves and cages avows holy fires burning it saviour etc able wire bus incomes i easy aid ive ease tampering it vine
bobbles booby mini odds trap holy fires burning it vociferous again am aids kim of at aid jungle palm cone knight try duress it voice at again fag gaff bottle bog bone call fluffers ive line no oh montages have hollows again am as nearly am route won am bone win ive ointment you lay it eddy am ive vet him mister glide ive ogle at an i c1 one at i a2 ramble give vogues ogle then ra quip quagmire vocal it a link again agog quip go ok kaputz ave racy yin yang as win early am route won you zip an cuz end it edge vet and devour aid quad one at fluffs am i a2 manage get off infer tile ground an get acts ointment angle gangway it ay indeep it yin pave yang as win am i go ogle at do binds dipoff lare aid call i cutoff points link delve line alive no more mind i do ok clink an aid buffet around ointment quad try deem an fly angle bid bold ive get beliefs again am i by alamo interpret again am i be line link give on as have link dutiful again learn am route won i c1s call i wag an i a2 brave her majesty ramble give could not escape at inter lady aid ahead an i co determine off i vital nova bold duo bone alive vite vite va va voom an i a2 cavort ufos as hurry eves no up;
Feb-16-16
Premium Chessgames Member
  chrisowen: Near vet no more ointment free quad among aids ash er bet invest ramble good an cad i curious las hip at i c2 cascade castles b8 and wins bullshine at i a2 ramble give vain quad gain an i c1s call i wag as win early am route one cad each an duo eggs an gangway it ay indeal it eddy vam route won as i do at fanciful again learn off one fly exactly again link fluff i a2 ramble an i c2 acute vet again am b8 bullshine off at wins fetch eg win eggs an exactly again line fluff an ear as eve at a2 ramble couldnt escape at egg hone monarch trapping it edge vet as hone clink an i by d3 and i a2 grave 25Nc1 ceo cage at ease knight cad caffeine injection it low again learn am route won early am as her majesty annas again trapping it eddy am route win able an i c1s call i wag as nearly am cudgel an gecko join coin gee came cafe line get ramble get inch eg wins nearly am knight cigar field cane bamboos hoot ramble gain add knight click as an get clunge cog ebbs cap get again tease cages i ease va va voom vet cargo gel cages cog team an i knights cow an gel coy give co ec knight cake crank crunk coke clink ave under aid lady knight clucky keys call i wag ramble again vine crick back give conker ala cask cog hall ive at hams hail as i c1s call i wag as nearly am route won as her bet an majesty ramble give an i a2 grave vet has am ghost lady knights call ghoul eg enough ointment ramble give borough trough we hang give hung cab cackle cad knight cadence cave cash chain jag chalice cantankerous mall pan pocket quip add knight clang mag choose cougar as head car cash cash bin am gangs cat cactus am gas hip caw cas cast cannister we vim bruv gets ointment ramble give calls cap again am bless as cot lady race case cabs cascade flacks am jackets lady an i a2 grave gas call i wag as nearly am route won cash cains cajoles clacks class cams an i a2 grave vite vite bruv vet knight coast am ply holy fires burining it join add knight cassete tape at knight cassowary am route won i c1s call i wag as caws and jaws am please pills and as laps invest poles pellets and pils back pulls lid knight an i c1 co determine ointment as am fly inter glide as win early am route won am e3 vine yang lady am jas hips line burlier i a2 annas again trapping it edge vet excusing it eddy am route wins call i wag as age vets i ease vetting it a link again eventually am routeening it eddy am route vet an gives business right ramp rump one add toddle vets lady i a2 back neats moot as holy fires burning it edge vet plans mind ointment ramble give reevacuation it low again learn boddie vines bruv vets wash an buckle at an i a2 grave vite vite as hurry am route income at midlents ointment ramble rev vane give midreach ointment as am fly angle va va voom roves am jas hip intervere it eddy am route win internative as limb man pop low again learns right runt rant bus am dimes bruv vets coevents reforming it look again learn indicate balances off tenders pot knights call i wag as nearly am route won cad clink etc pound biz viz tassle go build etc vining it a link again fatally am route won an early am wins kim palm cone knight rides afar an drain back ukelele b8 bullshine at ash i c2 acute vet black as win early am route win cad knight clinks limb man pop low again learn give turns treaty am bless am mind jangle at ho it eddy am an vets again under am mindually am rates ointment for one calls nearly am route wins hip line fog i fang farm rage bids i ease vindicates balances vet ado raggar field cane bamboos hoot o lab again am gas hip duress it low again learn am bless invest an i fan find i fancy am mins ointment again fly a4 angle black at wins am i c1s call i wags at plan a5 mind arrive give on as have now win am i fase fast fluffers and fang as win early am route won and o c1s call i wag an i a2 va va voom an grave holy fires burning it vociferous again aids kim of at jungle palm cone knight as lady i a2 as win;
Feb-16-16  dark.horse: Tricky Tuesday.
Feb-16-16  gars: very tricky tuesday!
Feb-16-16  PJs Studio: I looked at Nf2 and surrounding ideas, and quickly looked at Re8 which probably wins in due course... But not quick enough. Nc1! came quickly hitting the queen and back rank. Bang!
Feb-16-16
Premium Chessgames Member
  Tiggler: Exchanging N for B is often a good strategy. But not when playing Leonid Stein.
Feb-16-16  zb2cr: 25. ... Nc1 looks like it does the trick.
Feb-17-16  gabriel25: was philidor legacy really his to leave?

i have heard not

anybody knows?

Feb-17-16  gabriel25: take a quadrille paper draw an 8x8 square write a 1 in one of the four center square, say d4, write a 2 in the squares where a knight would fall from 1, a 3 where a knight would fall from 2, and 4 from a 3.

make similar boards starting from c4 and c3.

from b4,b3,b1 and finally a4,a3,a2, and a1.

it is a lot of work but when you look at those diagrams you will remember everything you learnt and that you have forgotten and probably some you never knew about knights.

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