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Arno Zude vs Luis Javier Sanchez Botella
Tradewise Gibraltar (2014), Catalan Bay GIB, rd 9, Feb-05
Sicilian Defense: Scheveningen. Classical Variation (B84)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jun-26-20
Premium Chessgames Member
  Predrag3141: The only move I missed is 21 Nf6+. I would have thrown away most of White's advantage with 21 Qg5.
Jun-26-20
Premium Chessgames Member
  al wazir: <Predrag3141: The only move I missed is 21 Nf6+>. Well done!

The only move I got was 14. e5. I couldn't decide Black's move in response (14...Nxd4, 14...Nd5, 14...dxe5), and the ramifications of the sequel overwhelmed me..

Jun-26-20  Brenin: Too many variations for me, too. 22 Nxe8+ Rxe8 23 Qc3+ and 24 Rxc7 would have been an even more decisive finish than 22 Qc3, denying Black's Q the chance to take the R with her by 22 ... Qxd7. Either way, it was all over for Black by then.
Jun-26-20
Premium Chessgames Member
  morfishine: Well, that was fun
Jun-26-20  mel gibson: I knew it was one of those 2 pawns but
I picked the wrong one to move forward.

Stockfish 11 says:

14. e5

(14. e5 (e4-e5 ♘f6-d5 ♘d4-f5 e6xf5 ♘c3xd5 ♕c7-c8 ♘d5-b6 ♕c8-d8 ♖d1-d2 ♗d7-e6 ♖f1-d1 ♗e7-h4 ♕g3-h3 ♘c6xe5 ♖d2xd6 ♕d8-e7 f4xe5 f5-f4 ♖d6xe6 ♕e7xe6 ♗e3xf4 ♕e6xh3 g2xh3 ♖b8-d8 ♘b6-d7 ♔g8-h8 ♔h1-g2 f7-f6 ♖d1-d5 f6xe5 ♖d5xe5 ♖e8xe5 ♘d7xe5 ♔h8-g8 ♗e2-c4+ ♔g8-f8 ♗c4-d3 ♔f8-g8 ♗d3-e4 ♖d8-e8 ♗e4-d5+ ♔g8-f8 ♘e5-d7+ ♔f8-e7 ♘d7-b6 ♔e7-d8 ♗d5-f3 ♖e8-e7 ♘b6-d5 ♖e7-e1 b2-b3 ♖e1-a1 ♘d5-e3 g7-g5 ♗f4-g3 ♗h4xg3) +3.69/42 207)

score for White +3.69 depth 42

Jun-26-20
Premium Chessgames Member
  Predrag3141: <I couldn't decide Black's move in response>

In this case, there was no need to see all the variations ahead of time. White was not risking anything the whole way. I'm guessing you would have chosen each move as it came, either all the way through or up to some point like me. IMO, that counts.

Typical of me as <Brenin> once noticed me doing in another situation, I lost count of the material and thought the rook was immune on move 21.

Jun-26-20  Brenin: In the analysis accompanying the game, Stockfish gives 13 Rad1 a question mark, but it's really not a bad move, just strengthening the central pressure before striking with a more decisive e5. The suggested response 13 ... d5 14 Nxc6 bxc6 15 Bd4 Rb4 16 Be5 Qb7 17 b3 g6 is given as only +0.42, but isn't White going to win the exchange for a P with 18 Bxf6 Bxf6 19 e5 Be7 20 a3 Rb6 21 Na4 ?
Jun-26-20
Premium Chessgames Member
  malt: Went for 14.e5 de5 (14...Nd5)
15.fe5 N:e5 16.Nf3 Nfg4 17.Bf4 f6
(17...Bd6 18.R:d6! Q:d6 19.N:e5 Rbd8 20.N:g4 )

18.Q:g4 winning a piece. On 15...Nd5 16.N:d5 ed5 17.e6 Q:g3 18.ef7+

14.e5 Nd5 15.Nf5 g6
(15...ef5 16.Nd5 Qd8 (Qa5) 17.Bb6 Qc8 18.ed6 B:d6 19.Nf6+ )

16.N:d6 B:d6 17.ed6 Q:d6 18.Ne4 Qc7 19.c4 N:f3 20.Nf6 + Kh8

(20...Kg7 21.N:e8+ )

21.Qh3 h5 22.R:d7

Jun-26-20
Premium Chessgames Member
  ChessCoachClark: The finish is a work of beauty! The Knight makes a Double Check Royal Fork to win this game in elegant style. Exceptional!
Jun-26-20
Premium Chessgames Member
  An Englishman: Good Morning: Only partial credit today. Did see the best move and how the seemingly innocuous 12...Rb8 made it possible. Did not see the tactical madness which followed.
Jun-26-20
Premium Chessgames Member
  agb2002: The alignment of the black queen and queen's rook on the diagonal b8-h2 suggests 14.e5:

A) 14... dxe5 15.fxe5

A.1) 15... Qxe5 16.Bf4 wins an exchange for a pawn.

A.2) 15... Nxe5 16.Nf3 (16.Bf4 Bd6 17.Nf3 Nh5) 16... Bd6 17.Rxd6 looks very good for White.

A.3) 15... Nd5 16.Nxd5 exd5 17.Rxf7

A.3.a) 17... Kxf7 18.e6+ and 19.Qxc7 wins.

A.3.b) 17... Nxe5 18.Qxg7#.

A.3.c) 17... Qxe5 18.Bf4 wins.

A.3.d) 17... Bf8 18.Bg4 looks good (18... Nxe5 19.Rxd7; 18... Qxe5 19.Bf4).

A.3.e) 17... g6 18.Bd3

A.3.e.1) 18... Nxd4 19.Bxg6 Nf5 20.Bxh7+ Kh8 (20... Kxf7 21.Qg6+ Kf8 22.Qg8#) 21.Qh3 Ng3+ 22.Qxg3 looks winning.

A.3.e.2) 18... Nxe5 19.Bf4 Kxf7 20.Bxe5 Qc8 21.Rf1+ Bf5 (21... Ke6 22.Bg4#; 21... Kg8 22.Bxg6) 22.Nxf5 gxf5 23.Bxf5 wins.

B) 14... Nd5 15.Nf5

B.1) 15... exf5 16.Nxd5 looks very good for White. For example, 16... Qd8 17.Bb6 Qc8 18.Nf6+ Bxf6 19.exf6 g6 20.Qg5 Nd8 21.Bxd8 Qxd8 22.Qh6 wins.

B.2) 15... Bf8 16.Nxd5 exd5 17.Nh6+ Kh8 18.Nxf7+ Kg8 19.Nxd6 seems to win a pawn at least.

B.3) 15... g6 16.Ng6+ Kg7 17.f5 with the double threat Nxf7 and f6+.

Jun-26-20
Premium Chessgames Member
  malt: Originally, started with 14.f5 e5
15.Bh6 Bf8 16.Nb3 Kh8 17.Bg5 Be7 18.B:f6 B:f6
19.Nd5 Qd8 20.N:f6 Q:f6 21.Qd3 attacking the 'd' pawn
Jun-26-20
Premium Chessgames Member
  Predrag3141: <Brenin: Stockfish gives 13 Rad1 a question mark, but it's really not a bad move isn't White going to win the exchange for a P ...>

Some 15 minute Stockfish runs say 13 e5 is better by a pawn than 13 Rd1. In the computer's line, after 13 Rad1 d5 14 Nxc6 bxc6 15 Bd4, Black improves how he drops the exchange by breaking up White's pawns with 15 Rxb2 14 Nxd5 etc.

After 14 e5 as suggested in the notes, the longer runs have Black retreating the knight, not trading, or he'd be behind about -3. White presses the pawns forward. 14 e5 Nd7 15 f5


click for larger view

In this pleasing position, Black surrenders a bishop for two pawns to nullify the attack:

14...Nxd4 15.Bxd4 Nxe5 16.f6 Ng6 17.fxe7

Jun-26-20
Premium Chessgames Member
  Predrag3141: If you followed along, I got some move numbers wrong in the 13 e5 line.
Jun-26-20  Brenin: Thanks, <Predrag3141>, after this and similar recent instances, I'm learning to take these Stockfish annotations with a large dose of salt. In this case, after 13 ... d5 14 Nxc6 bxc6 15 Bd4, although it looks ugly, ungrateful and cowardly, Black can avoid losing the exchange with Ra8, e.g. 16 Be5 Qb7.
Jun-26-20
Premium Chessgames Member
  drollere: i have no idea what happened there. i recognized the sicilian and e5 or f5 would be thematic, but things rapidly got way too swashbuckling with the N's.

after replaying the position, i enjoyed the tactics at each step. but once agb2002 starts going four-ply (A.3.e.1, etc.) or the stockfish fishers get different outcomes on different runs, you know you're deep in the weeds.

Jun-26-20
Premium Chessgames Member
  Predrag3141: <after 13 ... d5 14 Nxc6 bxc6 15 Bd4, although it looks ugly, ungrateful and cowardly, Black can avoid losing the exchange with Ra8>

After 15 minutes, Stockfish rated Ra8 a half pawn below dropping the exchange for a pawn, because of a strong kingside intiative for White after Be5. Here is the end of the main line after Ra8 (White to move):


click for larger view

For Black to get out of this situation, he'd have to vary somewhere, giving the silicon monster another 15 minutes to think. It's tough!

Jun-26-20  RandomVisitor: White misses 13.e5 but makes up for it with 14.e5:


click for larger view

Stockfish_20061707_x64_modern:

<52/73 50:49 +3.89 14.e5 Nd5 15.Nf5 exf5 16.Nxd5> Qc8 17.Nb6 Qd8 18.Rd2 Be6 19.Rfd1 Bh4 20.Qh3 Nxe5 21.Rxd6 Qe7 22.fxe5 f4 23.Rxe6 Qxe6 24.Bxf4 Qxh3 25.gxh3 Rbd8 26.Nd7 Kh8 27.Rd5 Re7 28.Nf6 Rxd5 29.Nxd5 Re8 30.Bh5 Kg8 31.Kg2 b5 32.Bg4 Rd8 33.Nb4 Rd4

51/80 50:49 +1.32 14.Nf3 Nh5 15.Qf2 Nf6 16.Bb6 Qc8 17.e5 dxe5 18.fxe5 Nd5 19.Nxd5 exd5 20.Rxd5 Bf5 21.Rd2 Kh8 22.c3 Be4 23.Qg3 Qe6 24.Bc7 Rbc8 25.Bd6 Rcd8 26.Rfd1 f6 27.Bxe7 Qxe7 28.exf6 Qxf6 29.Rxd8 Nxd8 30.Rf1 Bd5 31.Nd4 Qe7 32.b3 Nf7 33.Qf4 Kg8

Note that after 15.Nf5...


click for larger view

..we have an overworked pawn at e6 (not to mention a mate threat on g7). It cannot simultaneously capture the knight on f5 and defend the knight on d5.

Jun-26-20  Isolani: I really do not like 13...Bd7? here. In these type of specific 6 Be2 Scheveningen-Najdorf lines black should keep the d7 flight square open for his knight after the e5 advance.

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