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Yury Piskov vs Michal Vladimirovich Krasenkow
GMA World Cup Open (1989), Moscow URS, rd 6, May-??
Gruenfeld Defense: Exchange. Classical Variation (D86)  ·  1-0


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Kibitzer's Corner
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Jul-16-04  five17: What happens after 43. Ne6? This is my first time posting as it's the first week I've actually solved a few puzzles in a row. I was able to see that the game depended on the knight, but I can't see how it would play out.
Jul-16-04  DexterGordon: <five17: What happens after 43. Ne6?>

I'd think simply 43...Qxf6.

Premium Chessgames Member
  patzer2: Karlzen, appreciate your stronger player improvement in analyzing the possibilities after 43...Qd2 44.Rc8! Bg8 45.Qf5+ Kh8.

Your followup of 46.Nf6!! Rd8 (46...Rg7 47.Qh7+!! Rxh7 48. Rxg8#) 47.Rc7 with a quick win to follow is a big improvement over my slower winning ideas (46. Rxg8+ or 46. Rxd7+) of going for a decisive endgame.

However, I was wondering what is the followup after your alternate suggestion of 43. Qd2 44.Rc8! Bg8 <(45. Ne7! is simple)> if Black follows up the simple 45. Ne7 with 45...Rxe7.

After 43. Qd2 44.Rc8! Bg8 45. Ne7 Rxe7, seems to me that Black gets a draw by perpetual following 46. Qxe7 Qxf2+ 47. Kh3 Qf1+ 48. Kh4 Qh1+ 49. Kg4 Qf3+ or gets into an unclear Queen and pawn ending that looks better for Black following 46. Rxg8 Kxg8 47. Qxe7 Qxf2+ Kh3 (with Black having a draw in hand via perpetual with 48. Qf1+! or unclear but slightly better chances after 48. e3!?). Was 45. Ne7 just a quick look at an alternate line, or am I missing something?

In either event your suggestion of 43...Qd2 44.Rc8! Bg8 45.Qf5+ Kh8 46. Nf6!! as your mainline here was definitely a brilliant piece of analysis which I thoroughly enjoyed. Thanks again!!

Premium Chessgames Member
  kevin86: I guess that's this week's theme:moving a piece that blocks communication between enemy pieces and creates side threats as well.
Jul-16-04  karlzen: <patzer2>, Thanks for your kind words.

I believe, 43...Qd2 44.Rc8 Bg8 45.Ne7 Rxe7 46.Qxe7+ (+)<- followed by a quick mate is good enough! Perhaps you have misplaced the black king?

Jul-16-04  bob725: Got this as well 5/5.

Key is that you have to look for something that not only protects the pawn F2 but also looks after the queen. A little complicated.

Premium Chessgames Member
  patzer2: Karlzen, thanks again. After 43...Qd2 44.Rc8 Bg8 45.Ne7!, White does indeed win easily after 45...Rd8 46. Rxd8 Qxd8 47. Qg6+ Kh8 48. Qxg8+ Qxg8 49. Nxg8 Kxg8 50. Kh3 with a won endgame.

You are correct that 43...Qd2 44.Rc8 Bg8 45.Ne7! Rxe7 46.Qxe7+ leads to a quick mate after 46...Kh8 47. Qf6+ Kh7 48. Rc7+ . My initial analysis of the 43...Qd2 44.Rc8 Bg8 45.Ne7! Rxe7 side variation as leading to a draw was incorrect. Appreciate you setting me straight.

Jul-16-04  themindset: <kabbyg> well, i just check with fritzy, and he says that after 44.Rc8 that it is a mate in 21.

so i guess that's not "quick" in your book, but it does involve black immediately giving up his queen to extend the pointless agony. more than reason enough to resign at once.

Jul-16-04  wasaka: Did anyone else consider 43. Qf5 ? It looked promising to me, but I didn't see a mate directly in sight.
Jul-16-04  Rama: No, I was looking at Rd5 which works well except for Qxf6, heh.
Premium Chessgames Member
  patzer2: <wasaka> Haven't looked too indepth at 43. Qf5+!?, but after 43...Kg7 Black seems to hold the position against any immediate tactical threats, though White is clearly better due to the passed pawn on the b-file. Clearly better though is 43...Nd5!! with strong tactical threats undermining the Black position.
Premium Chessgames Member
  agb2002: White has a knight and a pawn for a bishop.

Black threatens 43... Qxf6, 43... Qxf2+ and 43... Qxb4.

White can generate coordination problems amongst the black pieces while stopping Qxf2+ with 43.Nd5:

A) 43... Bxd5 44.Qxd4 wins.

B) 43... Rxd5 44.Qxf7+ Kh8 (44... Qg7 45.Qxd5 wins a whole rook) 45.Rxd5 wins

C) 43... Qxd5 44.Rxd5 followed by a massacre.

D) 43... Qxf6 44.Nxf6+ followed by 45.Nxd7 wins.

E) 43... Qd2 44.Qf5+

E.1) 44... Kg8 45.Rc8+ Kg7 (Rd8 and Be8 just delay mate) 46.Qf6+ Kh7 47.Rh8#.

E.2) 44... Kh8 45.Rc8+ Bg8 46.Nf6 wins (46... Rg7 47.Rxg8+ Rxg8 48.Qh7#).

E.3) 44... Kg7 45.Qxd7 Qxf2+ 46.Kh3 Qf1+ 47.Kg4 Qe2+ 48.Kf4 Qf3+ 49.Ke5 Qxg3 50.Nf4 and the king eventually escapes checks.

Apr-29-16  The Kings Domain: Guessed the move the first time but couldn't figure out why it should be so thought of other calculations. Sheesh, what a simple and deceptive move. One of the best puzzles and a totally winning move for white.
Premium Chessgames Member
  kevin86: Wow! suddenly black's queen is undefended with no time or place to move it! BRILLIANT!
Premium Chessgames Member
  thegoodanarchist: I wonder if Krasenkow was Piskov'd about losing
Apr-29-16  dfcx: Black wants to trade the queen and white obviously wants to take advantage of it.

It must be a knight move.

Nd6/g6 are out of question.

Nh5 fails to Bxh5. That leaves


It disconnects the rook from the queen. If black plays

A. 43...Qxf6 44. Nxf6+ forks the rook.

B. 43...Rxd5 44.Qxf7+
B1. 44...Qg7 45.Qxd5 wins the rook
B2. 44...Kh8 45.Rc7 Rd7 46.Rxd7 Qxd7 47.Qxd7 a full queen ahead.

C. 43...Qd3/d2/d1 44.Qf5+ forks the rook

Premium Chessgames Member
  gawain: I'm disappointed in myself. I saw some of the virtues of 43 Nd5 (especially that it allows the queen to defend the f2 pawn and that after 43...Qxf6 it allows White to recapture with a winning fork). However I gave up on it because I didn't appreciate how many threats White has. I kept wanting to make 43 Nh5 work (some of the same virtues as 43 Nf5 has) because of the threat of 44 Qg7#.

Oh well.

Apr-29-16  scormus: short and to the point, and no "Lost Highways" to deal with. Instructive puzzle, Nd5 is the sort of move that is very easy to miss playing OTB. I know, Ive been there!
Apr-29-16  alphee: Very clever and to be honest I missed it ...
Premium Chessgames Member
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Apr-29-16  mel gibson: On move 39 Black had a chance to swap Queens -
he should have with hindsight.
Premium Chessgames Member
  chrisowen: deem any 43.Nd5 queen dancer cancer off an f6 fluffer as whoosh am won closer pin dead d5 loot dancer an er check f6 fluffer again vite vite elines am again vite vite line then glory anglers hah boosts g7 glorious ascension it ok in moot an gain d7 danglers add ahead and as won am bag gab on pensive it vote again badge gable grab again fag break gag band as hog I d7 back add jag blow bank gate lag back mag band as nag call am gob on pensive pagan mind band quabble good rag band bags am gate back an grubbed it vulcan grip vite vite elines link again on pensive nearer aid glare lane again under am as wag d4 back gabby d6 dangler quabble barbeque him bequeath quod que at d6 dangler as lare block le banque then d5 loot deemer dences dances danger over again dabble link dapper gent deaden vite vite elines bank deemer choo choo duffer dagger dangle then disher bets dosher decker denter dosser debtor vite vite elines bus bent dugout dewest again door dosh hand held horde and hammer certain chew d5 loot douche bag hood drench on hiver cans c er da header as hod carrier choose it seem like min men call oink deep on pensive pov it verdict in koinus agree then d5 loot dences am ive vite vite elines thicket deranges an yip pit pin pov mack ya vite vite eline mank monked it post mortem pit pin pov pam d4 ducky d6 just add rad cross wham an good d5 loot dancer cans lucky lackey affable fluffer choochoos yup pit pin key make mary d5 decode man good god then am bless hurry rec fag pin pebble wincher choochoos under rambo rumba off f4 arm float want as lecture mia vite vite eline erm d4 dandy d6 just add rad cross wham an good d5 loot dancer choochoos affable fluffer queen f6 fanfare me rummage then am d7 dark add dock aether may an dice eggheads church er c queen man green monarch er again am flurry it vent again agile f6 fanfare towers d7 danglers toff as wallow and reclear ramp vite vite eline link d5 cradle add again rad cross wham an good dancer choochoos am rode afar mash anter f6 flufferraided it pensive in blood as am mast pearly g7 gates am good an far yikes whoosh vite vite eline fag and f4 arm float again pit pin opov i as nag d4 daddy query d6 wash add rad cross wham an good d5 loot dancer achtung baby am route won deck d5 loot tooth am decode recluded it pin pov pit ok vite vite eline agains lights over rung as am vite vite elines at trade off an dark d7 dock add rad cross wham an good d5 loot dancer d7 clad crude cradle clod hopper candid cod batcher choochoos it ok moot done boasted it pensive vote again add rad cross wham an good d5 he's win egger doured it see and gone;
Apr-29-16  King.Arthur.Brazil: Easy: Nd5! My analysis repeat those from dfcx. Good, I didn't lose my inspiration, it seems.
Apr-29-16  Dr. J: Isn't this puzzle busted by 43.Nd5 Qd2 44.Qf5+ Kg7 45.Qxd7 Qxf2+ 46.Kh3 Qf3+ with a perpetual?
Apr-30-16  morfishine: <Dr.J> White has better: 43.Nd5 Qd2 44.Ne3 h5 45.Rg5
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