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Emory Tate vs Artur Chibukhchian
North American Open (2013), rd 4, Jan-26
Sicilian Defense: Kan. Knight Variation (B43)  ·  1-0



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sac: 27.Bxh7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Premium Chessgames Member
  radtop: It seems when your opponents pieces are blockaded on the wrong side of the board, a sacrifice is indicated. White is able to bring more pieces to bear.
Premium Chessgames Member
  ChessHigherCat: The first move was obviously either Nh6+ (with the idea of Qf5 with an attack on the h7 and/or a rook lift, which may eventually win but I don't see it) or else N*g7, which looks strong because if Kf8 black gets royally forked, and Kh8 looks suicidal, too. The variant with Kxg7 was probably the best defense but white still wins, although it seems more like an intuitive "this has got to be winning" sacrifice rather than an exhaustive Karpovian calculation foreseeing every move and contingency (especially not Bd4) but very impressive anyway (= I wouldn't want to play him for money!)
Mar-19-17  devere: I think that this is the easiest Sunday problem I've seen at
Mar-19-17  yadasampati: My first thought was: break that wall. And it was right. No need for complex analysis, just plain intuition. It took me 5 seconds.
Premium Chessgames Member
  ChessHigherCat: <devere: I think that this is the easiest Sunday problem I've seen at> That's true. It couldn't be that hard with black's kamikaze strategy of completely abandoning Big Daddy. There were only two candidate moves, Nxg7 or Nh6+, both fairly obvious, and they probably both work with best play.
Mar-19-17  diagonalley: <devere> ... agreed!
Mar-19-17  Abdel Irada: ∞

<<+> Mr. Chibukhchian, tear down that wall! <+>>

This is another "insane" puzzle whose senses are promptly restored with intuition/pattern recognition, and it might be a practical treatise on what happens if you leave the kingside guarded only by His Majesty.

(If you want to see this idea properly dramatized, read Virgil's description of the Achaean irruption into Priam's sanctum in the _Aeneid_.

"And the lamentations of the women beat against the golden stars" will give you an idea of the flavor.)

Back to the puzzle.

White begins by drawing the king from safety:

<<+> 20. Nxg7!, Kxg7>

Black can decline the sacrifice, but it doesn't help much. White gets a pawn for nothing, and the defender's kingside remains compromised.

<<+> 21. Qf6+, Kg8 >

The king can also go to f8, but then comes 22. e6 with the threat of 23. e7+.

<<+> 22. Bxh7+!, Kxh7 >

Again, 22. ...Kf8 is met by 23. e6.

<<+> 23. Rd3 ... >

Now we see the second point of the bishop sac: clearance for this rooklift. The threat is 24. Rh3+ followed by mate.

<<+> 23. ...Bd7 >

Necessary to keep the rook off h3.

<<+> 24. Qxf7+, Kh6 >

If 24. ...Kh8 25. Rg3 .

<<+> 25. e6, Be3! >

A counter-punching defense, blocking access to h3 and threatening 26. ...Qxc2+ followed by back-rank mate. But White can finesse away this counterthreat.

<<+> 26. Qf6+, Kh7
27. Qf5+, K any
28. Rdxe3 >

Black's counterplay has been beaten down, and the queen and rook will have a field day with the exposed king.


I confess that I lacked the patience to analyze every variation in a line that has many of them. But I don't think I overlooked anything critical.

Let's have a look.

Mar-19-17  Abdel Irada: ∞

So, Black *did* play 21. ...Kf8, and had a resource I hadn't considered in 22. ...Bd4.

I suppose I can only take partial credit for this one.

Mar-19-17  mel gibson: I didn't see that.
The computer makes the same move as the text but the King doesn't take the Knight.

Nxg7 (20. Nxg7 (♘f5xg7 b4-b3 ♘g7-h5 f7-f5 e5xf6/ep b3xc2+ ♗d3xc2 ♕c7-f7 ♕f3-f5 ♔g8-h8 ♘h5-g7 ♕f7-g8 ♘g7-e6 ♗c5-f8 f6-f7 ♕g8-g6 ♕f5-f3 ♕g6-h6 ♘e6xf8 ♖c8xf8 ♕f3-c3+ d5-d4) +4.68/15 164)

score +4.68 depth 15.

Premium Chessgames Member
  agb2002: White has a bishop and a knight for the bishop pair.

Black has the plan a5, b3 and a4 to open lines against the white king.

White can seize the initiative with 20.Nxg7:

A) 20... Kxg7 21.Qf6+

A.1) 21... Kf8 22.e6

A.1.a) 22... B(Q)e7 23.Qh8#.

A.1.b) 22... Qd8 23.Qxf7#.

A.1.c) 22... Kg8 23.Bxh7+

A.1.c.i) 23... Kxh7 24.Rd3 Qxh2 25.Qxf7+ Kh6(8) 26.Qf6+ (to improve the position of the queen) followed by 27.Rh3+ Qxh3 28.gxh3 not completely clear.

A.1.c.ii) 23... Kf8 24.e7+ Ke8 (24... B(Q)xe7 25.Qh8#) 25.Qh8+ Kd7 26.Bf5+ Kd6 27.Qf6#.

A.1.d) 22.... Ke8 23.exf7+ Kf8 (23... Kd7 24.Bf5#) 24.Qh6(8)+ Kxf7 25.Qxh7+ Kf8 (25... Kf6 26.Qg6#) 26.Rf1+ Ke8 27.Rde1+ Be7 (27... Kd8 28.Qg8+ Kd7 -28... Bf8+ 29.Qxf8+ Kd7 30.Bf5#- 29.Bf5+ Kd6 30.Qe6#) 28.Rf7 Ra7 29.Qg8+ Kd7 30.Rfxe7+ Kd6 31.Qe6+ Kc5 32.Rxc7 + - [Q+2P vs r].

A.1.e) 22... Rcb8 (in case of Bf5+) 23.e7+ Kg8 (23... Ke8 24.Qh8+ Kd7 25.Bf5+ Kd6 26.Qf6#) 24.Qg5+ Kh8 25.Qh6 f5 26.Bxf5 and mate in two.

A.1.f) 22... Bb5 (to clear c6 for the king) 23.e7+ Kg8 (23... Ke8 24.Bf5 Bxe7 25.Qh8#) 24.Re5 wins decisive material.

A.2) 21... Kg8 22.Bxh7+

A.2.a) 22... Kxh7 23.Rd3 Bd7 24.e6 Bxe6 25.Rxe6 wins (25... fxe6 26.Rh3+ Kg8 27.Rh8#).

A.2.b) 22... Kf8 23.e6 as in A.1.

B) 20... Bf8 21.Nh5 wins an important pawn with an overwhelming position due.

C) 20... d4 21.Qg4 as in B. For example, 21... Kh8 22.Nh5 Rg8 23.Qf5 wins the exchange at least.

Mar-19-17  morfishine: <20.Nxg7> fits the bill


Mar-19-17  colinb8: <Abdel Irada: If you want to see this idea properly dramatized, read Virgil's description of the Achaean irruption into Priam's sanctum in the _Aeneid_. "And the lamentations of the women beat against the golden stars" will give you an idea of the flavor.>

I'm very impressed: I don't recall any previous posts on referencing The Aeneid

That significantly raises the posting bar, and a challenge is for a poster to now reference The Iliad or The Odyssey.

Or possibly Gilgamesh

or, further afield (and one of my favourite art forms), a Korean Pansori, for example Chunhyangga

Mar-19-17  bane77: Far from "insane". Straight-forward moves.
Premium Chessgames Member
  kdogphs: Another attacking gem from the late great Emory Tate... a rare Sunday success for me.
Mar-19-17  BOSTER: < Abdel Irada >. Thanks for trip in Greco-Romain world.
Mar-19-17  YouRang: Insane Sunday 20.?

click for larger view

Sort of a typical puzzle position, with black's forces on one side, and the black K on the other with white forces (N, Q, B, 2R and Pe5) all potentially bearing down upon it. The question is, how do we break down black's position?

Given that this is a Sunday puzzle, chances are that I'll guess wrong.

I sort of liked the idea of opening the e and f files and activating white's rook via <20.e6>

click for larger view

I don't think black wants to allow either e7 or exf7, so I expect <20...fxe6 21.Rxe6>

click for larger view

White has all sorts of threat, including Ne7+ or Nh6+, or doubling rooks with Rde1. The rook also attacks Bc6, which is defended only by black's queen.

What will black do? I figured black would try to diffuse the attack with <21...Re8>, but then white has <22.Nxg7!>

click for larger view

- 22...Kxg7? 23.Qf6+

- 22...Qxg7 23.Rxc6 and black looks decimated.

- 22...Re7 23.Rxe7 Qxe7 24.Nf5 and again, black's defense is destroyed.

Of course, 20.Nxg7 turned out to be the best move, but not the only way to win.

Mar-19-17  esteger: That's the way to remember the great Tate!
Premium Chessgames Member
  tarlzic 1966: Quick glance sack every piece analyze you will find the win .Or Emory would to learn how to sacrifice or lose pathetically. Lol RIP TATE
Aug-13-20  BananaStrings: He is a legend for a reason!

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