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Peter Heine Nielsen vs Vladimir Chuchelov
Bundesliga (2003/04), GER, rd 2, Nov-02
Catalan Opening: General (E00)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Dec-09-18  groog: Not even close
Dec-09-18  Walter Glattke: The middle pawns win.
Dec-09-18  TeaChess: Got Nd8. The game continuation is fun to watch.
Dec-09-18  kungfufighter888: where is the win
Dec-09-18  ChessHigherCat: After wasting a lot of time trying to make Ne7+ work, this is the best I could find: 23. Na7 Rxa7 24. b4,

leading to this position (black to move):


click for larger view

with a slight advantage for white.

I'm sure there's better but don't ask me what!

Dec-09-18  ChessHigherCat: 24...Nb7 (+3.81) was a lousy move, he should have played 24...Qxf7 (+1.68), although white still has a considerable advantage
Dec-09-18
Premium Chessgames Member
  al wazir: I got the first move, but after 23...Be7 I would have continued 24. dxc5 Bxd8 25. Bxd8 Qxc8 26. c6. My advanced passed ♙ ties up black's pieces. I bet I can hold it and use it as a forward operating base.
Dec-09-18  ChessHigherCat: Sorry to make 3 posts in a row, but I suggest giving a lifetime membership to one of the really strong players like <moronovich>, <luzhin>, <FSR>, <Chancho>, <JimFromProvidence>, <PhonyBenoni>, etc., to choose appropriate puzzles for each day of the week.
Dec-09-18  sudoplatov: The first move is forced; I didn't get the rest because I didn't know what Black could play. I figured on the attack on c5 compensating for capture sequences on d8. I didn't see Be7, but Nf7 is again forced. Black defended better than I would have. After Nxf7, Black's Knight on c5 still hangs; any move leads to Qxe6.
Dec-09-18  mel gibson: I didn't know what to do.
I thought maybe 23. Ne5

Stockfish 10 agrees with the solution and says:

23. Nd8

(23. Nd8 (♘c6-d8 ♗f8-e7 ♘d8xf7
♔g8xf7 d4xc5 ♖c8-c6 ♕e3-d4 ♔f7-g8 b2-b4 ♕e8-g6 ♖c2-d2 ♖a8-e8 e2-e4 ♘f6xe4 ♗g2xe4 ♕g6xe4 ♕d4xe4 d5xe4 ♖c1-e1 ♗e7-g5 ♖d2-d7 e4-e3 f2-f4 ♗g5-f6 ♖e1xe3 ♖e8-e7 ♖d7-d1 ♔g8-f7 ♔g1-g2 g7-g5 f4xg5 h6xg5 ♗a5-d8 ♖e7-a7 ♗d8-b6 ♖a7-e7 ♖e3-a3) +2.79/35 136)

score for White +2.79 depth 35.

Dec-09-18  Articalplayer: Would'nt have 26.Nxh6 been a more forcing move than 26.Ne5?
Dec-09-18  Walter Glattke: 23.Nd8 brings material advantage after Be7 Nxf7 Kxf7 dxc5 or 23.-Rxd8 24.Bxd8 Rxd8 25.dxc5.
Dec-09-18  Mayankk: Like many others, I saw Nd8 since it keeps the attack on the c5 Black Knight and temporarily gets our Knight to a protected square where exchange of pieces leaves us an exchange up.

The rest was a blur although I would have played Nxf7 in response to Be7.

Dec-09-18
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop and a knight.

Black threatens Rxc6.

The black queen protects the rook on c8. This suggests 23.Nd8:

A) 23... Rxd8 24.Bxd8 seems to win an exchange (24... Ng4 25.Qf3).

B) 23... Be7 24.Nxf7

B.1) 24... K(Q)xf7 25.dxc5 wins a pawn.

B.2) 24... Nce4 25.Ne5 wins a pawn since Black can't play 25... Ng4.

Dec-09-18
Premium Chessgames Member
  agb2002: I saw 24... Nb7 but forgot it in spite of being the most interesting game continuation...
Dec-09-18  alshatranji: Shouldn’t Black have played 24. Qxf7, and saved himself the later trouble?
Dec-09-18  lost in space: Sigh. Not even close.
Dec-09-18
Premium Chessgames Member
  whiteshark:


click for larger view

White to move

1) +2.17 (32 ply) 23.Nd8 Rxd8 24.Bxd8 Rxd8 25.dxc5 Qc6 26.b4 Be7 27.Qd4 Rd7 28.a3 Bd8 29.Re1 Ne4 30.Rd1 f5 31.e3 Bf6 32.Qd3 Rd8 33.Bxe4 fxe4 34.Qe2 Rc8 35.Qg4 Ra8 36.Qg6 a5 37.Kg2 Be5 38.bxa5 Rxa5

2) +1.00 (32 ply) 23.Na7 Rxa7 24.b4 Be7 25.bxc5 Qc6 26.Qd3 Rb7 27.e3 Bd8 28.Be1 Bc7 29.Rb1 Re8 30.f4 g6 31.Rcb2 Rbb8 32.Bf3 Kg7 33.Qc2 Rbc8 34.Qg2 h5 35.Rc2 Red8 36.Qe2 Ne4 37.Bg2 Nf6 38.Rbb2 Rb8 39.a3

3) +0.95 (32 ply) 23.dxc5 Rxc6 24.b4 Be7 25.Qb3 Qb8 26.Rd1 Qe5 27.e3 Rcc8 28.Rcd2 Bd8 29.Bxd8 Rxd8 30.e4 Nxe4 31.Qe3 Rdb8 32.Rd4 a5 33.a3 Qg5 34.f4 Qf5 35.Rxe4 dxe4 36.Bxe4 Qg4 37.Bf3 Qf5 38.Bxa8 Rxa8 39.bxa5 Rxa5 40.Rd8+ Kh7

15.0 minute analysis by Stockfish 9 v010218

Dec-09-18  cormier:


click for larger view

Analysis by Houdini 4 d 24 dpa done

<1. + / = (0.27): 19...Ne8> 20.Bh3 Ndf6 21.Ng5 Nxc7 22.Rxc7 Rxc7 23.Rxc7 Qd8 24.Rc6 h6 25.Nf3 Ne4 26.Ne5 Bd6 27.Nd3 Be7 28.Qc1 a5 29.e3 Nd6 30.Bf1 Nc4 31.Qc3 Qe8 32.Ne5 Bf6 33.Bxc4 bxc4 34.Rc7 Bxe5 35.dxe5

2. + / = (0.54): 19...Qe8 20.Ne5 Bd8 21.Bd6 Rxc2 22.Rxc2 Be7 23.Bxe7 Qxe7 24.Qc1 Qd8 25.Nxd7 Nxd7 26.Rc7 Nf6 27.Qc6 g6 28.Bf3 a5 29.Kg2 b4 30.e3 Qe8 31.Qc5 Kg7 32.Qb6 h6 33.Qc5 Kh7 34.h3

Dec-09-18  messachess: If this is the only combination that works, then it is insanely difficult.
Dec-09-18  cormier:


click for larger view

Analysis by Houdini 4 d 24 dpa done

<1. + / = (0.26): 11...Nxd5> 12.Nxd5 cxd5 13.Qe3 Nf6 14.Rfc1 Bd6 15.Rc2 Rc8 16.Rxc8 Bxc8 17.Bxd6 Qxd6 18.Rc1 Ba6 19.Ne5 Rc8 20.Rxc8+ Bxc8 21.Qc3 Bb7 22.Qb3 Qc7 23.f3 g6 24.Qa3 a5 25.Kf2 Kg7 26.h3 h6 27.Qb3 Ba6 28.h4

2. + / = (0.47): 11...cxd5 12.Nb5 Ne4 13.Rfc1 Bxb5 14.Qxb5 Bd6 15.Be3 h6 16.Nd2 Nxd2 17.Bxd2 Nf6 18.Rc2 Rc8 19.Rxc8 Qxc8 20.Rc1 Qb7 21.Qc6 Qe7 22.a3 Re8 23.Qb5 e5 24.dxe5 Bxe5 25.e3 Ne4 26.Bb4 Qd8 27.Rd1 a6 28.Qxd5 Qxd5 29.Rxd5 Bxb2

Dec-09-18  cormier:


click for larger view

Analysis by Houdini 4 d 25 dpa done

<1. = (0.21): 10...Bb7> 11.cxd5 cxd5 12.Nb5 Ne4 13.Rfc1 a6 14.Bc7 Qe8 15.Nc3 b5 16.Ba5 Rc8 17.a4 Bc6 18.axb5 Nxc3 19.Rxc3 Bxb5 20.Qc2 h6 21.Ne1 Rxc3 22.bxc3 Qc8 23.Nd3 Qc4 24.Qd2 Rc8 25.Qf4 Rb8 26.Bb4 g5 27.Qe3 Bxb4

2. = (0.25): 10...Nh5 11.cxd5 cxd5 12.Be5 Nhf6 13.Rac1 Nxe5 14.Nxe5 Bb7 15.Rfd1 Rc8 16.Nb5 Rxc1 17.Rxc1 a6 18.Na7 Bd6 19.Nac6 Qc7 20.Rc3 b5 21.e3 Ng4 22.Qc2 Nxe5 23.Nxe5 Qe7 24.a3 Re8 25.b4 h6 26.Qd3 Bxe5 27.dxe5 Rc8 28.Rxc8+ Bxc8

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