Vitor Roberto Castro Carneiro vs Alexandr Fier (2017)

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Vitor Roberto Castro Carneiro vs Alexandr Fier
Brazilian Championship 2016 (2017), Rio de Janeiro BRA, rd 7, Feb-11
English Opening: King's English Variation. General (A20) · 1/2-1/2

ANALYSIS [x]

FEN COPIED

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< Earlier Kibitzing · PAGE 2 OF 2 · Later Kibitzing>
Jul-13-18		al wazir: What's wrong with 13...Qxf6 ? If 14. Nxd5, then 14...Qg7 1(not 14....Qd6 15. Bf4) 45. Nxb4. I wanted to play 12. Nxh6+ gxh6 13. Qd2. If 13...Ng4, then 14. h3, and white is going to be up two ♙s. Any other move and white has mating threats.

Jul-13-18		Mayankk: I tried the line 12 Nxh6+ gxh6 13 Bxh6 Re8 14 Bg5 Re6 15 Nxd4 Material is broadly even - 3 pawns for a minor piece but Black’s pieces are extremely passive and underdeveloped, his king needs reinforcement of guards around it while White has a variety of attacking ideas to choose from.

Jul-13-18		ChessHigherCat: <wtpy> You're but that's an extremely sharp line. I just saw Qd3 f5 and it looked too complicated for little old me, but if you play it right: 15. Qd3 f5 16. Qf3 Rf6 17. Qh5 Rxh6 18. Bxh6 Qf6 19. Bxd5+ It leads to this 19... black to move: click for larger view where black looks cooked if not carbonized. <GSM> I just said "from the blitz perspective" in my first post as an excuse for not spending hours on it.

Jul-13-18		ChessHigherCat: You're right

Jul-13-18		ChessHigherCat: < al wazir: What's wrong with 13...Qxf6 ? If 14. Nxd5, then 14...Qg7 1(not 14....Qd6 15. Bf4) 45. Nxb4> It's not apocalyptic but SF gives a solid advantage to white at the end of that line: 1) +1.63 (22 ply) 15...Nc6 16.Nxc6 bxc6 17.Bf4 Be6 18.Qd2 Rad8

Jul-13-18		agb2002: Black is about to eliminate the knight on f5. Black's position has a number of weaknesses: the defenseless bishop on b4, the pawn on h6, the overburdened pawn on g7, the knight on f6 and the pawn on d5. These details suggest 12.Nxh6+ gxh6 (else drop a pawn) 13.Rxf6: A) 13... Qxf6 14.Nxd5 A.1) 14... Qd6 (to protect the bishop on b4) 15.Bf4 followed by Nxb4 with two pawns for the exchange and Black's position considerably worsened. A.2) 14... Qg7 (to protect the h-pawn and touch the d-pawn) 15.Nxb4 Rd8 16.Be3 followed by Qd2 with the same conclusion as above. A.3) 14... Qg6 (to protect the h-pawn) 15.Nxb4 as above. B) 13... Bxc3 14.Rxh6 Ba5 15.Qd3 + - [B+2P vs N].

Jul-13-18		patzer2: <Gregor Samsa Mendel: Why did white agree to a draw here? Isn't he winning?> Yes! Instead of accepting the draw, White wins after 19...Kg7 20. Rh7+ Kg8 21. Qf3 +- (+10.62 @ 32 ply, Stockfish 8).

Jul-13-18		Walter Glattke: 19.-Kxh8?? 20.Qh5+ Kg7 21.Qh6+ Kg8 22.Bh7+ Kg8 23.Bg6+ Kg8 24.Qh7+ Kf8 25.Qf7#

Jul-13-18		patzer2: Today's Friday (12. ?) puzzle solution 12. Nxh6! gxh6 13. Rxf6! ± to ± to +- (+1.57 @ 36 ply, Stockfish 8) demonstrates a Rook can be worth more than a Knight and two pawns --especially if the exchange leaves White with a space advantage, control of the center and a menacing pawn majority. After 13. Rxf6!, Black gave White a winning position with 13...Bxc6? which allows the strong reply 14. Rxh6! +-. That White accepted a draw when he had a win in the final position doesn't diminish the fact that 13...Bxc6? is losing badly to 14. Rxh6! +- (+6.97 @ 30 ply, Stockfish 8). Instead of 13...Bxc6?, <al wazir>'s 13...Qxf6 puts up maximum resistance as strong play might go 13...Qxf6 14. Nxd5 Qg7 (14...Qd6 15. Bf4 Qg6 16. Nxb4 +-) 15. Nxb4 ± to +- (+1.57 @ 36 ply, Stockfish 8). With very strong play, White might win after 13...Qxf6 14.Nxd Qg7 15. Nxb4 ± to +-. However, finding a forced win will not be easy. With lots of opportunity for White miscalculation, Black surely has practical drawing chances after 13...Qxf6 14.Nxd Qg7 15. Nxb4 Nc6 ± to +- (+1.57 @ 36 ply, Stockfish 8). P.S.: Black's game takes a turn for the worse with 11...Bb4?, allowing today's Friday puzzle solution 12. Nxh6! gxh6 13. Rxf6! ± to ± to +- (+1.57 @ 36 ply, Stockfish 8). Instead, 11...Nc6 = (+0.17 @ 31 ply, Stockfish 8) would have kept it practically level for Black.

Jul-13-18		Walter Glattke: White is in advantage after 12.Nxd5 Nxd5 13.Bxd5 Bxf5 (13.-Qxd5? 14.Ne7+) 14.Rxf5 (14.-g6 15.Bxb7) 14.-Nc6 15.Bxc6 or 12.-Bxf5 13.Nxb4 Bc8 (or Bxb7) 14.e4

Jul-13-18		Walter Glattke: Ah, 14.-Qxd5 15.Ne7+? Bxe7!! no good ides, that 13.Nxd5 so far.

Jul-13-18		takchess: Saw bits and pieces of it. Calculated till RxN and thought QxR than N fork. Didnt think black would pass up the rook. 4 for 4 this week and partial credit today.

Jul-13-18		jith1207: White is a candidate master and black is a reputed GM in his country. White player might have just wanted the draw in this game for a good tournament performance. But as it looks pointed out by kibitzers here, he should have put some effort and could have got even better performance rating in this tournament.

Jul-13-18		Walter Glattke: 12.Qb3 Nc6 13.Bxd5 / 12.-Bxc3 13.bxc3 Qd7 14.Ba3 Re8 15.Nd6 Rd8 16.Bd5 Nxd5 17.Qxd5 with focus to b7 and f7

Jul-13-18		Carlos0012358: 13......Bxc3 instead of 13......Qxf6 is a big blunder

Jul-13-18		ACMEKINGKRUSHER: what? how do you translate the above? akk

Jul-13-18		Whitehat1963: Stockfish: +1.42 (33 ply) 13...Qxf6 14.Nxd5 Qg7 15.Nxb4 Nc6 16.Nxc6 bxc6 17.Bf4 Be6 18.Bxc6 Rad8 19.e3 Qg6 20.Rc1 Bd5 21.Bxd5 Rxd5 22.a4 a5 23.Qf3 Qe6 24.g4 Re8 25.Kg2 Red8 26.h4 Kg7 27.Kg3 R8d7 28.Be5+ f6 29.Bf4 Kh7 30.Qd1 Rg7 31.b3 Re7 32.Rc2 f5 33.g5 Qg6 34.Rh2

Jul-13-18		Steve.Patzer: Fantastic assessment by chrisowen, as always. He’s not just whistlin’ Dixie.

Jul-13-18		cormier: click for larger view Analysis by Houdini 4 15.Qd3 f5 16.Qf3 Rf6 17.Qh5 Rxh6 18.Bxh6 Qf6 19.Bxd5+ Be6 20.Rf1 Bxd5 21.Rxf5 Bf7 22.Qg4+ Qg6 23.Rg5 Kh7 24.Rxg6 Bxg6 25.Bf4 Nc6 26.Qd7+ Ne7 27.Qxb7 Rd8 28.Qxb4 Rd7 29.e3 Ng8 30.Qb5 Rf7 31.d5 Nf6 32.d6 Nd7 33.Qa4 Nc5 34.Qc6 Nd7 35.e4 Nf8 36.Kg2 Rg7 37.Be3 Rf7 38.e5 Bf5 39.h4 Bd7 40.Qd5 Kg8 41.b3 Ne6 42.a4 Kg7 43.Bxa7 +- (11.10) Depth: 26 dpa 15.Qd3 f5 +- (10.64 --) Depth: 27

Jul-13-18		cormier: click for larger view Analysis by Houdini 4 <16.Qf3 Rf6 17.Qh5 Rxh6 18.Bxh6 Qf6> 19.Bxd5+ Be6 20.Rf1 Bxd5 21.Rxf5 Bf7 22.Qg4+ Qg6 23.Rg5 Kh7 24.Rxg6 Bxg6 25.Bf4 Nc6 26.Qd7+ Ne7 27.Qxb7 Rg8 28.Qxb4 Rg7 29.Qd6 Rf7 30.d5 Nf5 31.Qd8 Ng7 32.Be5 Bb1 33.d6 Bf5 34.Qg5 Bd7 35.g4 Kg8 36.Kg2 Kf8 37.Qh4 Kg8 38.e4 a6 39.Bd4 a5 40.Kg3 a4 41.Qh6 a3 42.bxa3 +- (11.17) Depth: 24 dpa

Jul-13-18		cormier: click for larger view Analysis by Houdini 4 <19.Bxd5+ Be6 20.Rf1 Bxd5 21.Rxf5> Bf7 22.Qg4+ Qg6 23.Rg5 Kh7 24.Rxg6 Bxg6 25.Bf4 Nc6 26.Qd7+ Ne7 27.Qxb7 Re8 28.Qxb4 Bf7 29.Qb7 Kg8 30.Qxa7 Ng6 31.Kf2 Re7 32.Qc5 Bxa2 33.d5 Rf7 34.Kf3 Bb3 35.d6 Nf8 36.e4 Nd7 37.Qc8+ Nf8 38.Qb8 Bc4 39.b3 Ba6 40.b4 Kg7 41.Qb6 Bb7 42.Qd4+ Kg8 43.Ke3 Ba6 44.e5 Bb5 45.Qd5 Bd7 46.b5 Be6 47.Qe4 Ra7 48.Bh6 +- (10.55) Depth: 24 dpa

Jul-13-18		cormier: click for larger view Analysis by Houdini 4 <21...Bf7 22.Qg4+ Qg6 23.Rg5> Kh7 24.Rxg6 Bxg6 25.Bf4 Nc6 26.Qd7+ Ne7 27.Qxb7 Re8 28.Qxb4 Bf7 29.Qb7 Kg7 30.Be5+ Kf8 31.Qxa7 Kg8 32.Qd7 Ng6 33.Qg4 Re6 34.a4 Kf8 35.Bc7 Ne7 36.a5 Rg6 37.Qf3 Rc6 38.Be5 Ke8 39.Kf2 Bd5 40.Qh5+ Kd7 41.b4 Ra6 42.Qh7 Bc4 43.e4 Bg8 44.Qh3+ Be6 45.Qf1 Ra8 46.Qb5+ Kd8 +- (10.28) Depth: 24 dpa

Jul-13-18		cormier: click for larger view Analysis by Houdini 4 <23...Kh7 24.Rxg6 Bxg6> 25.Bf4 Nc6 26.Qd7+ Ne7 27.Qxb7 Re8 28.Qxb4 Bf7 29.Qb7 Kg7 30.Be5+ Kg8 31.e4 Ng6 32.Bf6 Nf8 33.a3 Nh7 34.Be5 Nf8 35.Kg2 a5 36.h4 Ng6 37.Bf6 Nf8 38.g4 a4 39.Kf3 Nh7 40.Be5 Nf8 41.h5 Nh7 42.h6 Rf8 43.Ke3 Ng5 44.d5 Re8 45.Kf4 Kh7 46.Qc6 +- (10.31) Depth: 25 dpa

Jul-13-18		cormier: click for larger view Analysis by Houdini 4 <25.Qh4 a5 26.Bf4+ Kg8 27.Qd8+> Kf7 28.Qd5+ Kf6 29.Bg5+ Kg7 30.Qxb7+ Nd7 31.Qxa8 Nf6 32.a3 Bd6 33.Qxa5 Ne8 34.Bf4 Bf8 35.Be5+ Kg8 36.Qd5+ Bf7 37.Qe4 Be7 38.Qc6 Bf8 39.Kf2 Ng7 40.d5 Be8 41.Qf6 Bd7 42.b4 Ne8 43.Qd8 Bb5 44.Qc8 Ng7 45.g4 Ba4 +- (12.12) Depth: 24 dpa

Jul-13-18		cormier: click for larger view Analysis by Houdini 4 27...Kh7 28.Bxb8 Rxb8 29.Qxb8 Bb1 30.Qxb7+ Kg6 31.Qb6+ Kf7 32.a3 Be7 33.Qc7 Ba2 34.e4 Ke8 35.Qxa5 Bf7 36.Qf5 Kf8 37.Kg2 Kg7 38.Qd7 Kf8 39.e5 Bg6 40.a4 Be8 41.Qf5+ Kg7 42.Qe6 Kf8 43.a5 Bf7 44.Qc8+ Kg7 45.a6 Bd5+ 46.Kf2 +- (11.60) Depth: 20 dpa 27...Kh7 28.Bxb8 +- (12.08 --) Depth: 21 dpa 27...Kh7 28.a3 +- (13.04 --) Depth: 21 dpa 27...Bf8 28.Bh6 Nd7 29.Qxa8 Bb1 30.Bxf8 Nxf8 31.Qxa5 b6 32.Qd5+ Kg7 33.Kf2 Kf6 34.Qe5+ Kg6 35.Qd6+ Kf7 36.a4 Bf5 37.Qxb6 Nd7 38.Qc7 Ke7 39.a5 Be4 40.Kg1 Bd5 41.a6 Ke6 42.Kf2 Nf6 43.a7 Ne4+ 44.Ke3 Nd6 45.Qd8 Bb7 46.h4 Bg2 47.Kf4 Bc6 48.h5 Nb5 +- (13.76) Depth: 25 dpa

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