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Artur Yusupov vs Eugenio Torre
Leningrad (1987), Leningrad URS, rd 7, May-??
Slav Defense: Czech Variation. Classical System (D18)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Nov-15-14  Cheapo by the Dozen: My first thought was that the solution starts with 21 Qe2/Qe3. That pins the e5 knight, and Black can't defend with ... f6 because of the d6 discovered check. 21 ... Nd6, however, both counterattacks and blockades the d pawn, bringing the ... f6 possibility back into play.

The other thought is to reverse move order and go with 21 d6 first, but then there's the matter of White's hanging c4 bishop.

Nov-15-14  Stormbringer: I'm guessing in the final position the bishop is untouchable? - QxB, Re1, Q-anywhere except f5 it can be taken, on f5 it allows for a royal fork with the knight on e7.

So I got the first move, and (I think) I have come to understand the last move... and that's about it.

Nov-15-14  MNW: <Stormbringer> Why not Qxe1 instead of retreating? Seems to me that black has really good compensation
Nov-15-14  MNW: Never mind, I miscounted material. White just goes up a whole rook. Doh!
Nov-15-14
Premium Chessgames Member
  al wazir: I went with 21. Qe2 too. Didn't see 21...Nd6.
Nov-15-14  bcokugras: I guessed but not conciously !
Nov-15-14  plumbst: Very Difficult. Material is even. White's Bishop is under attack.

White's loose bishop prevents him from winning material with Rde1, but the e-file is still the Achilles Heel of Black's position.

21.d6! Nxd6.

(21...Qd8 22.Bxe5; 21...Qxd6 22.Qe2, 21...Nxc4 22.dxe7)

22.Ba2!!

The only square; 22.Bd5 runs into a pin on the d-file, 22.Be2 blocks the e-file, and 22.Bb3 c4! opens up c5 for the Queen.

22...Ndc4

(otherwise Rde1)

23.Qe2! Bxc3
24.bxc3 Qe6
25.Bg3

White has a winning advantage after 25...Rfe8 26.f4 Ng4 27.Qxe6 fxe6 28.Bxc4 Ne3 29.Bb5 Nxd1 Rxd1.

Nov-15-14  plumbst: Missed the 22...c4 line, half-credit I guess.
Nov-15-14  gofer: I was looking at the humble pawn-push, which ticks all my boxes and then thought I had better check the replies for black and saw Nxf6+! which was an ugly moment. Luckily we have a simple reply Rxf6, without that life would indeed be <Very Difficult>! So now I am simply deciding between d6 and Bxe5. The point being that I want to avoid 21 ... Nxc4 unless I am really going to be winning something worth-while!

<21 d6 ...>

21 ... Nxc4
22 dxe7 Nxd2
23 exf8=Q+ Kxf8
24 Rxd2

21 ... Qd1/Qd2
22 Bxe5

21 ... Qxd6
22 Bxe5 Qxe5
23 Rfe1 Qf5
24 Qd5 Bxc3 (Qxd5 Nxd5! )
25 Qxf5 gxf5
26 bxc3 g6
27 Re7/Rd7

Now we come to the star of the piece!

21 ... Nxd6
22 Nd5!!!

At this point, I have given up. I really want to play 22 Nd5, but I dont think it works...

~~~

Ah! Okay, I have to play <22 Ba2 >, well that explains a lot. I really like the chance of playing Nxe7+ forcing the king on the open H file and then swinging a rook across to give mate, but it was just wishful thinking, the stolid attack of the knights on d6 and e5 was the way forward, not the flashy ending I was hoping for...

Nov-15-14  morfishine: Truly a very difficult position to analyze OTB without actually being Yusupov and knowing what he was thinking to arrive at this point.

What gives White a pull is the lurking pin vs Knight on <e5>, combined with the fact Black can't very well shore up the Knight with 21...f6 since this opens the a2-g8 diagonal, and finally, the passed d-pawn. These three aspects coordinate wonderfully to give White a winning position.

I first looked at 21.Qe2 (which I think is winning positionally) but settled on 21.d6 which is immediately forcing and more in Yusupov's style

<21.d6> 21...Nxd6 (21...Nxc4?? 22.dxe7 Nxd2 23.exf8=Q+ Kxf8 24.Rxd2 and White is up a rook) 22.Ba2 c4 (necessary to block the diagonal; bad for Black is 22...Nf5? 23.Rde1 Rfe8 24.Bxe5 and White has won a piece) 23.Nd5 Bc5+ 24.Kh1 Qe6 25.Nc7 Qe7 26.Nxa8 Rxa8 27.Qd5 forking the Bishop and Knight::


click for larger view

I don't see a reasonable move or continuation that allows Black to either recover the material or somehow gain a positional edge

*****
Of course, 25.Bxe5 is more to the point since 25...Qxe5 26.Re1 Qf5 27.Ne7+ forks the Black Queen

*****

Nov-15-14
Premium Chessgames Member
  patzer2: <Cheapo by the Dozen: My first thought was that the solution starts with 21 Qe2/Qe3. That pins the e5 knight, and Black can't defend with ... f6 because of the d6 discovered check.>

<al wazir: I went with 21. Qe2 too. Didn't see 21...Nd6.>

Also went for 21. Qe2 thinking it's an easy pin 'em and win 'em combination, but missed the neat defense 21. Qe2 Nd6!

So in addition to another deep, attacking Saturday puzzle combination, we also get a lesson on using a counter attack to defend against a pin.

Good show!

Nov-15-14
Premium Chessgames Member
  Penguincw: Well that was the shortest Saturday puzzle I've ever seen; I only got 21.d6. Is it Monday yet?
Nov-15-14  Cheapo by the Dozen: I don't see anything better than:

21 Qe2 Nd6
22 Ba2 Bxc3
23 bxc3 f6
24 gf gf
25 Bh6

The dual threat of Bxf8 and f4 seems to win material.

Nov-15-14  Cheapo by the Dozen: Well, if my line really wins the exchange or better like I think it does, I'll claim some reasonable degree of success on this puzzle. :) But I certainly missed the best line.
Nov-15-14
Premium Chessgames Member
  kevin86: A quick win for white...just a very faint whiff of Legal in the ending.
Nov-15-14
Premium Chessgames Member
  patzer2: <Cheapo by the Dozen> In the line from your post (diagram below)


click for larger view

Fritz has it dead even after 25...R(f)e8. If after 25...R(f)e8, White tries 26. f4?? Black replies 26...Nef7 and traps the Bishop.

Nov-15-14
Premium Chessgames Member
  Jimfromprovidence: <morf> <21.d6> <21...Nxd6 22.Ba2 c4 (necessary to block the diagonal; bad for Black is 22...Nf5? 23.Rde1 Rfe8 24.Bxe5 and White has won a piece)>

Morf, black can play 23...Rad8 in this line.


click for larger view

Nov-15-14
Premium Chessgames Member
  chrisowen: Would d6 tangle a mind for one a delve aim cred i

a cutoff in fly flight am cad clop ok i arms over focus a fetch in ear effect ash came down for bind hood wink hob and cook it old in over sense sore point us a hope in a good trun of fun i heads up a give i guffaw and each in dutiful crum d5 pivot able glean an evermore ar good a foot gifted took i gutoff in beck and call am curious chipper a striked it now in food for thought i edacious queen a do sh in d2 cedes ground knight and pawn a d6 focus and brunt of the attack start bush fire bin feed flock in sake dim tunnel in ever vain d5 gets a push around i van have a d6 on the card it arduous in aim timid a vindicated rook it surge in sag d6 vanquish all other thought in a layer d6 unwraps the onion douple dipped light frees his bishop and at the same time attack e7 chink of light drifts in dive bomb blink away the tears sprung bocker e7 glory as no more swept d6 tidal wave under the rug as want a lamy catch a melt e5 felt knight tip of the iceberg all said and done hazy d5 up on time deuce a bishop back or centre thrust a line low in demand acts d5 light win b4 and branch f7 again should prove decisive go at

log lovely he smooth a nip just ie e7 won in some lines and lights pressure should win delivery of a piece by my auger many to dip over timid d6 actually good as boot ie e7 and angles e8 verdict evermore comes back into the equation so a 21.d6

Nxd6 22.Ba2 jive pay day i net ride nt sate whyhand hind maneovre keep abreast d8 and also e8

hold in up recent times again inkling has i shape
choosed and changed sac i d6 dish cloth as right

rag on glided in has am giddy on have hill at he give stipulate again bishop a2 hollered gain douche bag had good hand of god d6 happy delve spark heed my warning in often held heads up hill

crested training hide away lace up boot hod carrier e8 hud in evermore switch inch double dipped drifts away in light d6 doors abound dallies for a moment and off dances away desire e7 destiny de-brief and account for f5 catch in desert dingle a dipoff dongle e7 dasher bet rooks come into fade a play i centre d8 and also e8 bad flow booed other bind like serve on a platter peach melba do the math black gobble spawns for a piece in hand dead de-fumes at ratchet back

advise e7 deal g5 found out life to drift safe to decant carafe pour on scourn it was in would plies driven screw you do then dank and dusty d6 sprung forth da da dum ball etc engine drive in to 22.Bd5 Nec4 23.Qc1 Rfd8 24.Na2 Nb6 25.Nxb4 cb4 26.Bxd6 Rxd6 27.Bxf7+ wins right d6 rook a f6 swallow tail over and excahnge up ride a lion in jail as hive check out c4 ash in so 22...c4 soluable ride i prefer tile a nice pick to be 22...Nf5 23.Rde1 Rad8 24.Bd5 Nxf3+ at focus again focal point coffer tile ground flock around clod flow face over off occular eye fob in f3 at catch dock found off came sac in f3 ogle inch of again 25.Bxf3 Rxd2 26.Rxe7 Rxb2 material equal has two bishops and 3 pawns in for a piece should win

elephant survey e7 the scene white in ascendency again ever tickle d7 as boot dominate stuff jocular sentry a post bric-abrac found knight back a d1 folk caught conifer tree as on f5 whirls e7 ment coiffeur de-list cow flinch sac fox a cut i b2 er i use in cad 23.Nd5 Bc5+ i be proof biblical proportions bind blind blinkers on wrap c5 up bivouac e8 lanes d6 cover arm c4 ignoble missio select bide your time we cab over bicycle chain d6 na sac i g5 check build ever up tour ride off a d5 bain of his life black brought in bred bid for biff c5 around in ever big bin lift long may your big jib draw c5 out vindicate blink bill of rights again healthy roi deliver tickle bi-modal e7 bio-shock blip f5 under the screen bird in the hand like delve bison herd the word c5 bite in ever ya good build up cement a

clump crimp crank calls up crab over met d5 cedes a point clock clog d5 light horse in hammer e7 i ment a line d5 chunk chink of light click clack and clump clomp croo away d5 to call f5 really crops up creds and creed knight cases the joint costs a curve ball d5 thrown in dead choices again since hope lance hood wink brace hope in chosen one couple count down g5 coarse through his hair of course it is ok in ogle a mind over occidental cave seem corner cop a links lot corroborate a mind d5 over done knight bishop cost inch f5 eg win enough came he cog flinch eg win 23...Qxg5+ wins a piece i d2 rook up 1 pawn ahead win c4 too add rook bishop at hack 24.Kh1 Qe6 25.Bxe5 Rfe8 26.Bxd6 Bxd6 27.Bxc4 Qf5 in team either bind again hands e6 take e5 or rook slide

at e8 piece ahead win c4 and d6 if i culture bus enough at ja ship to dock doth a macks lack sac c4 caddy in light got hind black on the ropes again we hint as a loon a g2 and alf inside e8 skim palm cone at b3 sure up ride a feed f5 in tinkle bells are ringing men band cow patch in e8 to be lovely inter d6 missed lade to rest d5 knight surveys all time chain slim man c4 pop fane i shape d6 to a bind leaf had goof etc c4.

Nov-15-14  eblunt: <chrisowen> I'm sorry, but I don't really understand the point of all that incoherent drivel.
Nov-15-14
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop and a knight.

Black threatens 21... Nxc4.

White can pin the knight on e5 with 21.Re1 but Black simply plays 21... Nxc4. In the case of 21.Qe2 or 21.Qe3 the answer 21... Nd6 seems to solve Black's problems (22.Bxe5 Nxc4; 22.Qxe5 Qxe5 23.Bxe5 Nxc4).

Another possibility is 21.Bxe5 Qxe5 22.d6, menacing 23.d7, but 22... Qd4+ 23.Qxd4 (else 23... Qxc4) 23... cxd4 24.d7 Nd6 and 25.Rxd4 is met with 25... Bc5.

The last line suggests 21.d6 Nxd6 (21... Nxc4 22.dxe7 Nxd2 23.exf8=Q+ Kxf8 24.Rxd2 + - [R vs P]) 22.Ba2 (22.Qxd6 Qxd6 23.Rxd6 Nxc4 White has lost a pawn and the bishop pair) with the threats Qxd6, Rfe1, Nd5, etc:

A) 22... Ndc4 23.Qe2 seems to win a piece (23... f6 24.Bxe5 followed by Qxc4+).

B) 22... Nec4 23.Bxd6 Nxd2 24.Bxd2 Nxf1 (24... Rfe8 25.Rxd2 + - [N vs P]) 25.Bxf8 + - [N vs P].

C) 22... Rad8 23.Nd5 Bxd2 (23... Qd7 24.Bxe5; 23... Qe6 24.Nxb4) 24.Nxe7+ Ke8 25.Rxd2 + - [2B vs N +P].

D) 22... Nf5 23.Re1 seems to win the knight on e5.

Nov-15-14  TheBish: Yusupov vs E Torre, 1987

White to play (21.?) "Very Difficult"

First of all, I arrived at my solution by more or less a process of elimination. Not 21. Rfe1? Nxf3+, or 21. Rde1 Nxc4 22. Rxe7 Nxd2. Also the try 21. Qe2 (hoping for 21...f6?? 22. d6+) is well answered by 21...Nd6! (blockading the d-pawn) and neither 22. Bxe5 Nxc4 23. Qxc4 Qxe5 or 22. Qxe5 Qxe5 23. Bxe5 Nxc4 satisfies, and if 21. Qe2 Nd6 22. Ba2 Rae8 23. Rde1 f6! is now possible, and all of Black's problems are solved. So I thought, "What if we sacrifice a pawn so there is no blockade?"

21. d6! Nxd6

Clearly forced, otherwise Black loses the Ne5. If 21...Qxd6 simply 22. Qe2 wins the knight. If 21...Nxc4 22. dxe7 Nxd2 23. exf8=Q+ Kxf8 24. Rxd2 and White is up a rook.

22. Ba2!

Necessary, as 22. Qe2 Ndxc4 leaves Black ahead.

22...Rad8

Alternatives: 22...Nf5 23. Rde1 Rad8 24. Qf2 and the knight will fall; 22...c4 23. Nd5! Bc5+ (23...Bxd2 24. Nxe7+ and 25. Rxd2 wins a piece) 24. Kh1 Qe6 25. Bxe5! wins a piece since 25...Qxe5 26. Rfe1 Qf5 27. Ne7+ wins the queen.

23. Qe2! Rfe8

As 23...Nc6 24. Qxe7 Nxe7 25. Bxd6 wins a piece.

24. Nd5 Qd7

Or 24...Qe6 25. Nf6+, winning the queen.

25. Bxe5 and White has won a piece, as 25...f6?? is not possible due to 26. Nxf6++.

Nov-16-14
Premium Chessgames Member
  patzer2: Here's a deep look at (21?) with Fritz 12:

<21. d6!!> White's strongest winning chance (+1.28 @ 21 depth).

The tempting 21. Qe2 is White's second best, but it's worth only a slight advantage (. Fritz's third choice is 21. Rde1 which also fizzles to only a slight advantage (0.59 @ 21 depth).

<21...Nxd6> Best and forced. Others lose decisively.

For example if 21...Qxd6 (other tries are worse), then 22. Qc1!

(not 22. Qxd6?? Nxd6 23. Ba2 Bxc3 24. bxc3 Ndc4! 25. Bxe5 Nxe5 26. f4! Ng4! 27. Rd7 with White's win dwindling to only a slight advantage)

22...Qb8 23.Nd5 Kh7 24. bg3! Ba5 25. Qe3 Nd6 26. Qxe5! Nf5 (26...Nxc4 27. Qe4 Qd8 28. Ne7 ) 27. Qxb8 Raxb8 28. Bxb8 (+6.46 @ 21 depth)

<22. Ba2> Until the search depth reaches 20, Fritz initially prefers 22. Bd5!? (+1.36 @ 21 depth). However, at 21 depth, 22. Ba2! (+1.45 @ 20 depth) is preferred.

<22...c4?> This is the losing move.

Black can complicate and leave the outcome in doubt with 22...Nd5 23. Rde1! Rad8 24. Bd5! Nxf3+ 25. Bxf3 Rxd2 26. Rxe7 Rxb2 27. Nd1! Rxh2! 28. Rxb7 (+1.29 @ 29 depth).

<23. Nd5!> (+3.50 @ 20/41 depth) Black's previous move overlooks this surprise Knight Fork, which exposes both Queens to attack but wins on the spot.

<23...Bc5+> Black's resistance is futile, but he still plays on for a few moves.

If 23...Bxd2, then 24. Nxe7+ Kh7 25. Rxd2 (+7.79 @ 2/45 depth) leaves White a piece up for an easy win.

<24. Kh1 Qe6 25. Bxe5!> (+4.36 @ 20 depth)

Black resigns as 25...Qxe5 26. Rfe1 wins with the threat of a royal fork after 26...Qf5 27. Ne7+ .

P.S.: Since best play doesn't result in a clear win for 21. d6! , perhaps 21. Qe2 or 21. Rde1 can be considered for at least partial credit toward yesterday's Saturday (21. ?) puzzle.

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