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David Navara vs Zurab Sturua
European Championship (2016), Gjakova KOS, rd 4, May-15
Nimzo-Indian Defense: Normal Variation. Bishop Attack Classical Defense (E48)  ·  1-0



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Kibitzer's Corner
May-16-16  Rob Morrison: Wow!! What courage and calculation to play 30. Qf6!!! Navajo had to see the whole king walk out to f4 with black pieces all over the place. Reminds me of the famous Botvinnik-Capablanca king walk game from 1938, except this is even better. Bravo!
Dec-16-17  dfcx: Realizing
20.Re1? Nf2
21.Rxe7 Nxd3
22.Rxe8+ Rxe8
loses a piece for white, the solution comes up naturally.

20.Nxg6! fxg6
21.Re1 wins back the knight since 21...Nf2 is now met with 22.Qxg6+

White will be up a pawn and also open the g file for future attacks.

Dec-16-17  Walter Glattke: I could imagine, that 20.Raf1 Nd6 21.Nxg6 fxg6 22.Qg6+ Qg7 23.Qxd6 was stronger. 21.-Ng5 22.Nxg6 fxg6 23.Qxg6+ Kh8 (Qg7 Qxe8+) 24.Rh4+ Nh7 25.Rxh7+ Qxh7 26.Qxe8+ Kg7 27.Rf7 or 26.-Qg8 27.Rf8 Qxf8 28.Qxf8+ Kh7 29.dxc5 wins
Dec-16-17  patzer2: For today's Saturday puzzle (20. ?), I went for 20. Nxg6 anticipating 20...fxg6 21. Rae1 +- (+2.54 @ 31 ply, Stockfish 8).

I was a bit surprised by 20...Qg5, and was undecided as to whether 21. Rxe4 ± to +- (+1.77 @ 34 ply, Stockfish 8) or 21. Ne7+ ± (+0.98 @ 34 ply, Stockfish 8) was the better follow up.

The computer obviously prefers 21. Rxe4, but I'm not sure why it evaluates this game move as nearly a pawn better than 21. Ne7+. Also, the computer evaluates the quiet waiting move 21. h3 ± (+1.42 @ 34 ply, Stockfish 8) as a promising alternative.

P.S.: Black's game takes a turn for the worse with 16...g6? 17. Nxh4 ± (+0.77 @ 28 ply, Stockfish 8). Instead, 16...cxd4 17. cxd4 exd4 18. fxe4 Rxe4 19. Nh6+ gxh6 20. Rxf6 Qd5 = to ⩲ (+0.23 @ 36 ply, Stockfish 8) keeps it about level.

Dec-16-17  diagonalley: so... 20.NxP PxN 21.R-K1 wins a pawn... is that really all there is to it(?!) <diagonalley> must be missing something
Dec-16-17  alphee: Like Patzer2 I could find the move and anticipated something similar but never thought of ♕g5 ...
Dec-16-17  mel gibson: White has only a small advantage.
Black could player more strongly.
The computer says:

Nxg6 (20. Nxg6 (♘h4xg6 ♕e7-d6 ♖f4xe4 ♖e8xe4 ♕d3xe4 ♕d6xg6 ♕e4-e2 ♖a8-d8 d4xc5 b6xc5 ♖a1-f1 c5-c4 ♗b2-c1 ♕g6-e6 ♕e2-h5 ♖d8-d5 ♕h5-h4 ♖d5-e5 ♗c1-f4 ♖e5-e2 ♗f4-d6 ♕e6-g6 ♕h4-h3 ♖e2-e6) +1.56/20 227)

score for White +1.56 depth 20

Dec-16-17  malt: Have 20.N:g6 fg6 21.Re1 Qd6 22.Re:e4
Dec-16-17  Cheapo by the Dozen: Honestly, I'd probably have just played d5, which seems to work because ... Ne5 is impossible and ... g5 doesn't happen to work.

I.e., I totally whiffed on the puzzle.

Dec-16-17  geniokov: At first glance, my move will be 20.d5.
Dec-16-17  geniokov: Strategically,White's plan is to open the a1-h8 diagonal to activate his bishop at b2;20..g5 will not work because 21.Nf5 is too strong for black. Now,the idea of White once he opened the diagonal is to bring her Queen to h3 with a treat to h8 mating black.
Dec-16-17  morfishine: Very interesting game, from beginning to end (though it appears Black passed on a number of improvements)


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

The simplistic 20.Re1 loses to 20... Nf2 21.Rxe7 Nxd3 22.Rxe8+ Rxe8.

However, the possibility of an intermediate Qxg6+ suggests 20.Nxg6:

A) 20... fxg6 21.Re1

A.1) 21... Nf2 22.Qxg6+ Qg7 (22... Kh8 23.Rxe7 Rxe7 24.Rh4+ Rh7 25.Q(R)xh7#) 23.Rxe8+ Rxe8 24.Qxe8+ Kh7 25.Rh7+ Qh6 26.Qf7+ Kh8 27.Rxh6#.

A.2) 21... Qg7 22.Rfxe4 wins a pawn at least.

B) 20... Qd6 21.Rfxe4 Qxg6 22.Rae1 Rxe4 23.Qxe4 wins a pawn at least.

Dec-16-17  morfishine: I found this one practically unvisuable
Dec-16-17  sudoplatov: I also found Raf1. I didn't find a good defense for Black. I saw Ng6 but I couldn't find a follow up. I didn't think the d5 works as after ...Ne5, the set of exchanges leaves White down the Exchange.
Dec-16-17  patzer2: <agb2002><The simplistic 20.Re1 loses to 20... Nf2> Right! If 20. Re1? Nf2! (diagram below)

click for larger view

Black turns the tables and steals the win. White's best, in the diagram above after 20. Re1? Nf2!, is 21. Qxg6+ fxg6 22. Rxe7 Nh3+! 23. gxh3 Nxe7 -+ (-2.54 @ 31 ply, Stockfish 8).

What Black must avoid after 20. Re1? is 20...f5?? (diagram below)

click for larger view

when 21. Nxf5! gxf5 22. Rxf5 +- (+4.10 @ 30 ply, Stockfish 8) demonstrates that the sham sacrifice of the Knight is worth far more than the two pawns gained. After 21. Nxf5! gxf5 22. Rxf5 +- (diagram below),

click for larger view

the bare naked King (stripped of pawn cover) is exposed to a decisive attack.

Premium Chessgames Member
  wtpy: First time in several weeks that I have been 6/6. Bring on Sunday.
Dec-16-17  Walter Glattke: I remember to 20.Raf1, that may win for White.
Dec-16-17  njchess: I only got this because there just didn't seem to be any other viable option. Re1 fails miserably, and although I thought Nxg6 was uncertain, it was the best of the worst. I'm not sure fxg6 is any worse than the game continuation. All that for a pawn...
Dec-16-17  Marmot PFL: 20 Nxg6 Seemed easier to find than most Saturdays, probably would have traded queens on move 23 to cut any risk of losing but that ending looks very hard to win.
Premium Chessgames Member
  Jimfromprovidence: There's a nice alternative win for white if black tries to avoid the text 29 Qh4+.

it goes 28 Re8+ <Kg7> 29 Qxf5 Rxf5 30 d5+.

click for larger view

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