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Giorgi Kacheishvili vs Konstantin Rufovich Sakaev
Anibal Open (2001), Anibal Open ESP, rd 7
Queen's Indian Defense: Spassky System (E14)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jan-01-11  MostlyAverageJoe: This could be a good Friday puzzle: <27.?>


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Jul-02-15  SpiritedReposte: What a move that makes it all work Bg8!
Nov-12-17
Premium Chessgames Member
  plang: 5..g6!? is a rarely played sideline; after 10..a6 the position resembled a Modern Defense as much as it did a Queens Indian. 14..f5?! backfired on Black; 14..Ng5 looks better. The alternative 17 Nxf5..Qxf5 18 Bd3..Qxh3 19 Bxh7+..Kh8 20 Be4..Nf6 21 Bg2..Qh5 followed by ..Bc8 would have given Black good counterplay. 21..Kh8 22 Ng6+..Kxh7 23 Nxf8+..Kg8 24 Nxd7..Qd8 25 Re6..Qxd7 26 Rae1..Rf8 27 Re7..Qxh3 28 Rxc7 would have been winning for White.
Aug-31-19
Premium Chessgames Member
  An Englishman: Good Evening: Could not see far enough ahead to claim credit, and it seems solvers have to see White's 22nd to claim full credit. In real life, would have played Be2 and congratulated myself on crippling Black's center pawns.
Aug-31-19  Steve.Patzer: Wow! What a finish!
Aug-31-19
Premium Chessgames Member
  halito27: One of those games that makes you appreciate not just the logic of chess, but the creativity.
Aug-31-19
Premium Chessgames Member
  patzer2: Almost got the complete solution to today's Saturday puzzle (18. ?), but I faltered on the seventh move of White's winning combination.

I correctly guessed White's first six moves in the forcing sequence 18. Nxe4! fxe4 19. Bxe4 Ng5 20. Bxg5 hxg5 21. Bh7+ Kf7 22. Re6 gxh4 23. Rxf6+ Bxf6.

However, I missed the winning follow-up on the seventh move of the combination with 24. Re1! +- (+4.88 @ 35 ply, Stockfish 10), going instead with 24. Qg6+ ⩲ (0.45 @ 38 ply, Stockfish 10) which gives Black counter chances in a near level position.

P.S.: So where did things go wrong for Black? The losing move appears to be 15...Qf6?, allowing 16. exf5 +- (+2.47 @ 31 ply, Stockfish 10).

Instead, 15...Ng5 16. Bg2 Qf6 17. exf5 gxf5 18. f4 19. Bxf4 Nc5 ⩲ (+0.61 @ 32 ply, Stockfish 10) gives Black a fighting chance.

Earlier in the opening, instead of the seldom played 5...g6, I prefer the popular move and computer choice 5...d5 as in Black's win in M Demidov vs Jakovenko, 2018.

Aug-31-19  newzild: It's clear that there must be a sacrifice on e4, but I couldn't see any lines all the way through, so clicked through the game to enjoy the ride. What a ride!
Aug-31-19
Premium Chessgames Member
  WorstPlayerEver: Hmm.. 25. Kg2 is better.
After 25. Qf5 Bc8
Aug-31-19
Premium Chessgames Member
  WorstPlayerEver: After 25... Bc8 the Rxe5 combi does not work:
25. Qf5 Bc8 26. Qh5+ Kg7 27. Rxe5 Bxe5 28. Qg6+ Kh8 29. Bg8 Bf5 #1


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No clear win after: 25. Qf5 Bc8 26. Qh5+ Kg7 27. f4 Nf3+ 28. Qxf3 Kxh7 29. g4 #2


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Aug-31-19
Premium Chessgames Member
  WorstPlayerEver: 25. Kg2 Rae8 26. f4 Bc8 27. fxe5 Rxe5 28. Rxe5 Bxe5 +4.5


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Easiest way to convert for White?

Aug-31-19  MrCarciofo: why black didn't play 26...Ke7? white is on the attack but I can't see a winning continuation (it will be difficult and slow for the black king to go to the queenside and move his pieces, but with the line played in the match he allows the mating combination - 26...Kg7 is not forced, why did black play it?)
Aug-31-19
Premium Chessgames Member
  whiteshark: If <21...Kh8 22.Ng6+ Kxh7 23.Nxf8+ Kg8 24.Nxd7 Qf7 25.Re6>


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25...Bc8 26.Qe2 Bxd7 27.Re7 Re8 28.Rxf7 Rxe2 29.Rxd7 +-

25...Qxd7 26.Rae1 Rf8 27.Re7 Qxh3 28.Qg6 Qh6 29.Qxh6 Bxh6 30.R1e6 +-

Aug-31-19
Premium Chessgames Member
  malt: Had gone for 22...Q:e6
(22...Qd4/Qd8 23.Qg6# )

23.de6+ K:e6 24.Qg6+ Rf6 25.Q:g5 Kf7
26.Nf5

Nice finish !

Aug-31-19
Premium Chessgames Member
  OhioChessFan: <McC> 26...Ke7 27. f4 and the pinned Knight is dead. That still might have been more viable than the game continuation.

Bg8 was a nice move.

Aug-31-19
Premium Chessgames Member
  OhioChessFan: If Black tries 21...Kh8

then 22. Ng6+ Kxh7 23. Nxf8+ Kg8 24. Nxd7 Qf7 25. Re6

all looks forced for Black and White is clearly winning.


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Aug-31-19  mel gibson: Good puzzle.
Stockfish 10 goes for swapping Queens instead but starts off with the same first few moves:

18. Nxe4

(18. Nxe4 (♘c3xe4 f5xe4 ♗d3xe4
♘h7-g5 ♗c1xg5 ♕f6xf2+ ♕c2xf2 ♖f8xf2 ♔g1xf2 h6xg5 ♘h4-f5 ♗g7xb2 ♖a1-b1 ♗b2-c3 ♖e1-e3 ♗c3-f6 ♔f2-g2 a6-a5 ♘f5-h6+ ♔g8-g7 ♘h6-g4 ♖a8-e8 ♖e3-e2 ♗f6-d4 ♖b1-d1 ♗d4-c3 ♖d1-c1 ♗c3-d4 ♖e2-e1 ♘d7-c5 ♗e4-f5 ♖e8xe1 ♖c1xe1 ♗b7-a6 ♖e1-d1 ♗d4-f6 ♖d1-c1 ♗a6-b7 ♖c1-f1 ♗f6-c3 ♖f1-d1 ♗b7-a6 ♖d1-c1 ♗c3-b2 ♖c1-c2 ♗b2-d4 h3-h4 g5xh4 g3xh4 b6-b5 c4xb5 ♗a6xb5) +2.88/39 163)

score for White +2.88 depth 39

Aug-31-19
Premium Chessgames Member
  Breunor: I went for Nxe4 as a positional sacrifice; I saw it opened up the position and I got two central pawns for a piece; I didnít see the whole combination later althoughI saw through Nxf8.
Aug-31-19  payan: Only an engine can suggest 25-...Kg7 that leads to draws
Aug-31-19  hcgflynn: Very tough position for black.
Maybe 20. - Qxf2+ 21. Qxf2 Rxf2 22. Kxf2 hxg5 23. Nf5 Bxb2 24. Rab1 Bf6 would have hold, but imo still a way better setup for white.

Also, 26. - Ke7 was of course better than the continuation.

Aug-31-19  ajile:


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Analysis by Rybka 3 32-bit :

1. +- (2.22): 26...Ke7 27.f4 Rae8 28.Bg6 Rh8 29.Bxe8 Rxh5 30.Bxh5 Bc8 31.Kg2 Bf5

2. +- (9.24): 26...Kg7 27.Rxe5

Aug-31-19
Premium Chessgames Member
  agb2002: Black threatens exd3, Ne5 and Ng5.

White can take advantage of the momentary lack of coordination of the black pieces with 18.Nxe4 fxe4 19.Bxe4 Ng5 20.Bxg5:

A) 20... Qxg5 21.Bh7+

A.1) 21... Kh8 22.Ng6+ Kxh7 23.Nxf8+ Kg8 (23... Kh8 24.Qh7#) 24.Ne6 (24.Nxd7 Rd8 25.Nxb6 cxb6, unclear) 24... Qf6 25.Nxg7, followed by Re4, Rae1, and White looks better.

A.2) 21... Kf7 22.Nf3 Qf6 (22... Qh5 23.g4 Qxh3 24.Qg6#) 23.Re6 wins decisive material (23... Qxf3 24.Qg6#).

B) 20... hxg5 21.Bh7+

B.1) 21... Kh8 22.Ng6+ Kxh7 23.Nxf8+ Kg8 24.Nxd7 looks good for White. For example, 24... Qd8 25.Qg6 Qxd7 26.Qxg5 + - [R+3P vs 2B].

B.2) 21... Kf7 22.Bg6+ repeats moves at least.

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