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Vugar Asadli vs Javokhir Sindarov
22nd Abu Dhabi Int. Chess Festival Mas (2015), Abu Dhabi UAE, rd 9, Aug-31
King's Indian Attack: Symmetrical Defense (A05)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
May-12-17  Walter Glattke: A) 27.-Rxf2 butcher's party with light
B) 27.-Nxg3
B1) 28.Kh2 Nf1#
B2) 28.fxg3 Rf1+ 29.Kh2 Rxh1+ 30.Kxh1
Qf3 31.Kh2
B3) 28.-Qh5 29.Bxg5 Bc8+ 30.Bh4
B4) 28.-Bxc1 29.Nxc1 Qh5 30.Qb8 Bc8+
31.Kg2 Qxh1#
May-12-17  Walter Glattke: Coorr: B4) 29.-Rf1+ 30.Kh2 Qh5 31.Qb8+
Bc8+ 32.Kg2 Qxh1#
May-12-17  Doniez: Last black move 31....Bc8 is extremely elegant but I didn't find it.
May-12-17  ChessHigherCat: 27...Nxg3 28. fxg3 Qxg3+ 29. Bg2 Be3+ 30. Bxe3 Qxe3+ 31. Rf2 Qxf2# If white declines the N sacrifice with Kh2 then Nf1#

<Walter Glattke> I don't understand your notation. Are you recommending Rxf2 or Nxg3?

May-12-17  ChessHigherCat: Okay, I see, you're dismissing variant A and recommending 27. Nxg3 as variant B and B1-B3 are subvariants of that line
May-12-17  Dirkster: Nice attack from Sindarov - who was only NINE years old when this game was played!! (His opponent was at the ripe old age of fourteen!)
May-12-17  Walter Glattke: To answer this, I tested Rxf2 with
28.Qb8+ Kh7 29.Qxb6+ Ng7 30.Rxf2 Qxg3+
31.Rg2 Bxg2 32.Bxg2 Qe1+ 33.Kh2 Bxc1
34.Nxc1 Qc3 35.Qxb7 Qxc1 36.Qxb6 ,
then I tested 27.-Nxg3, so I did not search for other A) variations, is senseless.
May-12-17  AlicesKnight: Saw part of this but like <Doniez> missed the pretty h-file cross-check.
May-12-17
Premium Chessgames Member
  patzer2: Here's a look at today's Friday puzzle (27...?) with the chessgames.com opening explorer, Deep Fritz 15 and Stockfish 8:

<1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. d4 Bd7 7. O-O Qc8 8. Re1 Bh3 9. Bh1!?> Though it seems anti-positional, this interesting move, which attempts to avoid exchanging off the White Squared Bishop at all costs, is not such a terrible move. The computers indicate White still has a small edge or at least equality with 9. Bh1.

However, it certainly can't be the best option for the first player. White IMO secures more advantage with the developing move 9. e4 to (+0.47 @ 26 depth, Stockfish 8) as in a former US Champion's win in Reshevsky vs S Kagan, 1971.

<9...Nc6 10. c4 Re8 11. d5 Nd8 12. Nc3 e5 13. e4 b6 14. b4 a5 15. a3 axb4 16. axb4 Rxa1 17. Qxa1 Nb7 18. Qa7 h6 19. Nd2 Nh5 20. Bf3 Rf8 21. Rc1> White has managed to obtain an advantage, but in the heat of battle misses a chance to strengthen his grip on the position.

Much stronger is 21. Be2! Bf6 22. c5 (+1.39 @ 32 depth, Stockfish 8), dominating the center and creating threats on both wings.

<21... Bf6 22. Nb3?!> This attempt to move the Knight on d2 to a more active square interferes with the defense of White's center and Kingside.

Much better is getting the Queen back into play and holding the position with 22. Qa4 Bg4 23. Qc2 (+0.41 @ 32 depth, Stockfish 8)

<22...22... Bg5 23. Rc2 f5 24. c5?> Allowing 24...f5! (-4.12 @ 27 depth, Stockfish 8,) this is the losing move.

The saving maneuver White misses is 24. Qa1 Nf6 25. Qd1 = (0.00 @ 29 depth, Stockfish 8.)

<24... f4 > (-4.12 @ 27 depth, Stockfish 8) Now Black is winning.

<25. Bh1> If 25. Bxh5, Black wins after 25...gxh5 26. Qa6 fxg3 27. hxg3 h4 28. Qe2 Bg4 29. Qf1 bxc5 30. Bc1 Bf3 31. Bxg5 hxg5 32. Ne2 Bxe4 33. Rb2 Qg4 34. Nd2 Bxd5 (-7.44 @ 20 depth, Deep Fritz 15)

<25... fxg3 26. hxg3 Qg4 27. Bc1 Nxg3!> This forces mate-in-five and solves the Friday May 12, 2017 chessgames.com puzzle.

<28. fxg3 Bxc1> This works great, but mating quicker is 28... Rf1+ 29. Kh2 Qh5 30. Bxg5 hxg5 31. Qb8+ Bc8+ 32. Kg2 Qxh1#.

<29. Nxc1> White can drag it out a bit longer with 29. Kh2 Be3 30. Bg2 Bxg2 31. Kxg2 Rf3 32. Qb8+ Kg7 33. Qxc7+ Kf6 34. Qe7+ Kxe7 35. cxd6+ Nxd6 36. Ne2 Rf2+ 37. Kh1 Qh3+ 38. Kg1 Qh2#.

<29... Rf1+ 30. Kh2 Qh5 31. Qb8+ Bc8+ 0-1> White resigns in lieu of 32. Kg2 Qxh1# or 32... Qh3#.

May-12-17  gofer: The start is simple...

<27 ... Nxg3>
<28 fxg3 Qxg3+>


click for larger view

29 Rg2 Bxg2
30 Bxg2 Rf2 mating


click for larger view

<29 Bg2 Bxg2>
<30 Rxg2 Qe1+>
<31 Kh2 Rf1!>


click for larger view

Black threatens Rh1# and Qh4#, so white cannot move either of the knights or bishop...

32 Rxg5/Re2 Rh1+
33 Kg2 Qf1+
34 Kg3 Rh3+
35 Kg4 Qf3#

So that just leaves queen moves...

<32 Qb8+ Nd8+>
<33 Qxd8 Bxd8>
<34 Rxg6+ Kf7>


click for larger view

White can resign...

~~~

Doh!!!

May-12-17
Premium Chessgames Member
  agb2002: The material is identical.

White threatens Qxb7.

The natural move is 27... Nxg3:

A) 28.fxg3 Qxg3+

A.1) 29.Bg2 Bxg2 30.Rxg2 Qe1+ 31.Kh2 Rf1

A.1.a) 32.Kh3 Qh4#.

A.1.b) 32.Rg3 Rh1+ 33.Kg2 Qf1#.

A.1.c) 32.Rg4 Rh1+ 33.Kg2 Qf1+ 34.Kg3 Rh3#.

A.1.d) 32.Rxg5 (or Re2, Rd2) 32... Rh1+ 33.Kg2 Qf1+ 34.Kg3 Rh3+ 35.Kg4 Qf3#.

A.1.e) 32.Qb8+ Kg7 33.Qxc7+ Kf6 34.Bxg5+ hxg5 and mate soon as above.

A.2) 29.Rg2 Qe1+ 30.Kh2 Rf1 is similar to A.1.

B) 28.Qxb7 Nf1+ 29.Bg2 Qxg2#.

C) 28.f3 Ne2+ 29.Kf2 (29.Kh2 Qg1(3)#) 29... Qg1+ 30.Kxe2 Qf1#.

May-12-17  cocker: Black could have omitted 28 ... Bxc1.
May-12-17
Premium Chessgames Member
  morfishine: <27...Nxg3> is begging to be played, but thought <Bxc1> was an important capture (if not on move 27, then move 28)

Lo and behold, those moves were in that order, but really couldn't decide which one comes first

Nice finish

*****

May-12-17  JTV: After 28.fxg3, black can mate in 5 moves and he missed it by playing 28...Bxc1? instead of Rf1+
May-12-17
Premium Chessgames Member
  patzer2: Well played game by both sides, especially considering that this game was played two years ago when White as an FIDE Master was 14 or 15 years old and Black as a Candidate Master was 9 or 10 years old.
May-12-17  devere: 27...Nxg3 is obvious. But then after 28.fxg3, it is not that easy to see that ...Qxg3+ is a mistake, and ...Rf1+ 29.Kh2 Qh5 forces checkmate.
May-12-17
Premium Chessgames Member
  patzer2: Correction: White would have been 13 or 14 at the time of this game two years ago, as he is currently 15-years-old.
May-12-17  Moszkowski012273: 28...BxB is really not necessary.
May-12-17
Premium Chessgames Member
  Fusilli: <cocker: Black could have omitted 28 ... Bxc1>

That's what I thought, and what I decided for: the sequence in the game but without Bxc1. Maybe black thought Bxg5 would be a problem, but it's not. Simply hxg5, and the same mating net goes on.

May-12-17  stst: Quickie, not sure if it works:
27.......Nxg3
28. Almost any, but a few sensible defense:
(A)
29.Bg2 Ne2+
29.RxN QxB#

(B)
28.f2xN QxP+
29(i)Bg2 QxB#
29(ii)Rg2 BxR
30.BxB Rf2 should prevail and win.

May-12-17  stst: <28...BxB is really not necessary.>

Totally agreed, often, CG simply puts forward a game, without putting the optimal moves. The game sequence therefore does not really represent THE solution (but only a plausible "solution")

May-12-17  dunamisvpm: Mate in 6
27...Nxg3 28.fxg3 Rf1+ 29.Kh2 Qh5 30.Bxg5 hxg5 31.Qb8+ Bc8+ 32.Kg2 Qxh1#

-7.94 27...Bxc1 28.Nxc1 Nxg3 29.f3 Ne2+ 30.Kf2 Nd4 31.Qxb7 Qh4+ 32.Ke3 Qe1+ 33.N1e2 Nxc2+ 34.Kd3 Nxb4+ 35.Kc4 dxc5 36.Qxc7 Bf1 37.Qxb6 Bxe2+ 38.Nxe2 Qxe2+ 39.Kxc5

-4.19 27...Nxc5 28.bxc5 Nxg3 29.fxg3 Qxg3+ 30.Rg2 Bxg2 31.Bxg2 Bxc1 32.Nxc1 Qxc3 33.Ne2 Qe3+ 34.Kh2 Qxe2 35.Qxc7 Qh5+ 36.Kg1 Qd1+ 37.Kh2 Qh5+ 38.Kg1 Ra8 39.cxb6

-3.82 27...bxc5 28.Bxg5 hxg5 29.Qxb7 Nxg3 30.f3 Ne2+ 31.Kf2 Nd4 32.Nxd4 exd4 33.bxc5 dxc3 34.Rxc3 Qxe4 35.Re3 Qh4+ 36.Ke2 Qc4+ 37.Kd2 Qd4+ 38.Rd3

-0.69 27...Nd8 28.Bxg5 Nxg3 29.fxg3 Qxg3+ 30.Bg2 Qxg5 31.Qxc7 bxc5 32.bxc5

Stockfish.js 8 | depth=15

May-12-17  Olsonist: Very nice mating pattern after Kg2, Qa3#. Does it have a name? It's kind of like a Kill Box mate.

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