Johannes Zukertort vs Adolf Anderssen (1866)

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Johannes Zukertort vs Adolf Anderssen
Breslau (1866), Breslau POL (Prussian Empire)
Italian Game: Evans Gambit. Paulsen Variation (C51) · 0-1

ANALYSIS [x]

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Aug-17-04		Poulsen: A fine game by Anderssen - a game that clearly underlines how far he was able to mature his play - despite his age. From move 26 Anderssen has firm grib on Zukertort. 15 years earlier he might have lost that grib - but not now.

Oct-23-09		Pawn and Two: <Poulsen> Anderssen certainly had a winning position at move 26, however, there were a few surprises yet to come. By move 31, Anderssen's position appeared overwhelming: click for larger view Fritz indicates Black should continue by: (-6.44) (20 ply) 31...h6 32.Rc1 hxg5 33.Nexg5 fxg5 34.Nxg5 Rc8 35.Qh7+ Kf8 36.Re1 Nc4 37.Rb1 a5, or (-5.91) (20 ply) 31...Rb7 32.Rc1 fxg5 33.Nexg5 h6 34.Ne6 Qb5 35.f6 Qd3 35.Re1 Qxe4 36.Nxg7 Rf7 37.Rg1 Nxd5. In either of these variations Black is clearly winning. Anderssen instead played 31...Nxf1, and the game continued: (-2.81) (20 ply) 31...Nxf1 32.g6 h6 33.gxf7+ Qxf7 34.Qxf1. Black is still winning, but at move 34, or at move 35, he should have played 35...Qe8. Instead, after the game continuation 34...Qh5 35.h3 Rc8 36.Kg2, the winning process is more difficult. Best at move 36 was: (-1.44) (21 ply) 36...g5 37.Qxa6 Rb8 38.Kg3 g4 39.Nf4 Qe8 40.hxg4 Qxe4, and Black is still winning. Instead, Anderssen played 36...c2?, and after 37.Bb2, the position was approximately equal! (.00) (22 ply) 37...Kh7. The position after 37...Kh7: click for larger view Zukertort should then have continued with equality by 38.Qe2!: (.00) (24 ply) 38...Qe8 39.Qxa6 Rb8 40.bc1 Qc8 41.Qe2 Ra8 42.Nh4 Rxa2, (.00) (20 ply) 43.Qh5 Kg8 44.Nxg7 Qc5 45.Qe8+ Kh7 46.Qg6+, with perpetual check. Instead of 38.Qe2! and equality, Zukertort erred with 38.Bc1?, and Anderssen allowed him no more drawing chances in this game.

Oct-23-09		dannygjk: So, we are reduced to showing with today's technology that humans make mistakes? No offense, but all humans make mistakes, all humans have always made mistakes, and all humans will always make mistakes. Even GK and JRC made mistakes. :P

Oct-23-09		dannygjk: btw, even when a comp indicates equality after x ply it does not constitute proof of a draw. Try Fritz on some endgames that require more than 50 ply to prove the result. Oh, and I don't mean endgames which are in the retrograde analysis database ;)

Oct-23-09		moronovich: But these are the 15 minutes fame for everyone: Patzer + Fritz.

Jan-18-10		heuristic: mo' better moves: 23.Nxe5 dxe5 24.Ng3 Bb5 25.Be2 Qe7 23...Nxd3 24.Qxd3 Bb5 25.Qe3 Bxf1 26.Rxf1 24.Nxe5 fxe5 25.Ne6 Bb5 26.Be2 Qe7 25...Bb5 26.Qd2 Bxf1 27.Rxf1 Qb5 28.Rc1 26.Qb1 b3 27.axb3 Bxe6 28.fxe6 Rb7 27.Ne1 Bb5 28.Nd3 Nb7 29.Qc2 a5 31...g6 32.fxg6 hxg6 33.Rb1 f5 34.exf5 37...g5 38.Kg3 c1Q 39.Bxc1 Rc3 40.Bd2 39.Nf8+ Kg8 40.Ng6 a5 41.Qe2 a4 40.Qe2 Qc8 41.Nd2 Be3 42.Nd3 Bxd2 41.Bb2 b3 42.axb3 Rxb3 43.Bc1 Qa4 42.Qg1 Rc3 43.Kh2 Qe7 44.Qc Rxf3 42...Rxf3 43.Qxc2 Qh5 44.Nf4 Rxf4 45.Qd3 44.h4 Qc8 45.Ned4 Qc4 46.Nxe2 Qxe2

Jan-18-10		heuristic: <dannygjk & moronovich> it's possible that comments about games are in the spirit of pedagogy and not derision. personally, lessons learned are independent of the "quality" of the game.

Jul-02-16		GrahamClayton: With 43...h5, 44....h4+ and 45...♖g2, Anderssen sets up a mating net against the Black king along the g and h-files. 46...♕h8 and 47....♔g8+ is an unusual discovered check.

Jul-02-16		offramp: When I saw the position after 32.g6, click for larger view I thought, "This is it. Black can't last long now!" But the game continued. The amazing knight on e6 looked as solid as a rock, but it had to leave to help in the defence. I believe Germans called it Grand Strategy.

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