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Harmen Jonkman vs Friso Nijboer
"Harmonie Harmed Harmen" (game of the day Oct-22-2018)
Harmonie (2002), Groningen NED, rd 8, Dec-29
Sicilian Defense: Nezhmetdinov-Rossolimo Attack (B30)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Oct-22-18  kungfufighter888: where did white went wrong ?
Oct-22-18
Premium Chessgames Member
  offramp: We all need good Nijboers.
Oct-22-18
Premium Chessgames Member
  HeMateMe: the Nijbo kid/

Was a Friend of mine/

27...R-f8!

Oct-22-18
Premium Chessgames Member
  Breunor: Kungfu fighter, it looks like the losing move should be 21 Qc3, which Stockfish evaluates at -2.02, however black doesn't play through with the best moves. 21 Re3 evaluates at -.64.

But then white misses 23 Rxe6! The final fatal blunder is 25 g3 which evaluates to -4.9. 25 f3 is -1.8.

Oct-22-18
Premium Chessgames Member
  OrangeTulip: Apart from a bad move, is it also not a case of the attacker-defender ratio? White has hardly any defending pieces near his king.
Oct-22-18  machak: "We all need good Nijboers."
much better pun than the current one
Oct-22-18  cormier:


click for larger view

Analysis by Houdini 4: d 24 dpa done

1. = / + (-0.35): 19...a5 20.f3 a4 21.Ne3 Rf7 22.Ng4 d5 23.Nef2 axb3 24.axb3 d4 25.Nd3 Rxb3 26.Nge5 Nxe5 27.Nxe5 Be8 28.Nxf7 Bxf7 29.Bc1 e5 30.Rxe5 Bd6 31.Rg5 Qc7 32.f4 Bxc4 33.Rg3 Rxg3 34.hxg3 Bd5 35.Bb2 g6 36.Re1 Qb6 37.g4 Qb5

2. = / + (-0.33): 19...Rb6 20.f3 Rf7 21.Bc1 Qb8 22.Qe2 Nf4 23.Bxf4 Qxf4 24.Qf2 Qc7 25.Rd3 Rf5 26.Qd2 Rh5 27.h3 d5 28.Nf2 dxc4 29.bxc4 Rg5 30.Qe2 Be8 31.Ne4 Rg6 32.Ne3 Bh4 33.Red1 Ba4

Oct-22-18  cormier:


click for larger view

Analysis by Houdini 4: d 22 dpa done only

<1. - / + (-1.32): 20...Qe8> 21.Re3 Nxg2 22.Rg3 e5 23.Nd6 Bxd6 24.Qxd6 Nh4 25.Kf1 Nf3 26.b5 Nxh2+ 27.Kg1 Nf3+ 28.Kf1 Be4 29.Ne3 Rf8 30.Qxd7 Qxd7 31.Rxd7 Rf7 32.Rxf7 Kxf7 33.Kg2 Rb6 34.Ba3 Ne1+ 35.Kh2 Rh6+ 36.Rh3 Rxh3+ 37.Kxh3 Nd3 38.Kg3 Ke6 39.f3 Ba8 40.Kg4

2. - / + (-0.78): 20...a6 21.Re3 Nxg2 22.Kxg2 Bg5 23.f3 Bxe3 24.Nxe3 Rf7 25.Qe1 Rxb4 26.Be5 Ra4 27.Rd2 h6 28.Rb2 Bxe4 29.fxe4 d6 30.Bg3 Ra3 31.Qe2 Qg5 32.Rb3 Rxb3 33.axb3 Qg6 34.Qd3 Rf8 35.h3

Oct-22-18  cormier:


click for larger view

Analysis by Houdini 4: d 22 dpa done only, and no 20.b4 in view yet ?

<1. = (-0.18): 20.Re2> Qf8 21.Ne1 a5 22.Ng3 Rf7 23.Ne4 a4 24.Be5 Rd8 25.f3 d6 26.Bc3 axb3 27.axb3 e5 28.Bb2 Nf5 29.Nd3 Rb8 30.b4 cxb4 31.Nxb4 Ba4 32.Ra1 Bb3 33.Nc6 Bxc4 34.Nxb8 Bxe2 35.Qxe2

2. = (-0.24): 20.Re3 Rf7 21.Be5 Rc8 22.Qe2 d5 23.Rh3 Qf8 24.Nd6 Bxd6 25.Rxh4 Bxe5 26.Qxe5 dxc4 27.Rxc4 Rxf2 28.Ne3 Rxa2 29.Qxe6+ Kh8 30.Rf1 Qe8 31.Qxe8+ Rxe8 32.Rxc5 h6 33.Rf2 Ra1+ 34.Rf1 Rxf1+ 35.Kxf1 Rxe3 36.Rxc6 Rxb3 37.Ra6 Rb7 38.Ke2 Kg8 39.Ke3 Kf7

3. = / + (-0.28): 20.Qe2 Qc7 21.f3 Rbf8 22.Rf1 Rf4 23.Bc1 R4f7 24.Ne1 Nf5 25.Nd3 Nd4 26.Qe3 d6 27.Bb2 e5 28.Bc3 Bh4 29.Be1 Bxe1 30.Qxe1 Rf5 31.Rf2 Bxe4 32.Qxe4 Rg5 33.Kh1

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