chessgames.com
Members · Prefs · Laboratory · Collections · Openings · Endgames · Sacrifices · History · Search Kibitzing · Kibitzer's Café · Chessforums · Tournament Index · Players · Kibitzing

David Bronstein vs Raymond Keene
Teesside (1975), Middlesbrough ENG, rd 1, Sep-01
Catalan Opening: Closed Variation (E01)  ·  1-0
ANALYSIS [x]

FEN COPIED

explore this opening
find similar games 1 more Bronstein/Keene game
sac: 24.Rxd5 PGN: download | view | print Help: general | java-troubleshooting

TIP: You should register a free account to activate some of Chessgames.com's coolest and most powerful features.

PGN Viewer:  What is this?
For help with this chess viewer, please see the Olga Chess Viewer Quickstart Guide.
PREMIUM MEMBERS CAN REQUEST COMPUTER ANALYSIS [more info]

A COMPUTER ANNOTATED SCORE OF THIS GAME IS AVAILABLE.  [CLICK HERE]

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Jul-18-11  Everett: Funny, Bronstein shows the power of this same diagonal, even in a "locked" position, agains the same opponent.

Bronstein vs Keene, 1975

Jul-22-18
Premium Chessgames Member
  ChessHigherCat: howz about dis?

23. Rxd5 Qxd5 24. Ne5 Qe6 25. Rd1 (threatening to pin the queen) fxe5 26. Bd5 exf4 27. Bxe6#

Jul-22-18
Premium Chessgames Member
  ChessHigherCat: Curses, foiled again! My line loses to Qxd5.
Keene to lose
Jul-22-18
Premium Chessgames Member
  landshark: Ok here's a rare stab at a Sunday puzzle before bedtime on Saturday - 23.Ng5, Bxg2 24.Rxd7, Bh8 25.f3. I think this keeps the attack going nicely. Not going to bother pre-analyzing stuff - let's see how far I can get playing guess-the-move....
Jul-22-18
Premium Chessgames Member
  landshark: Cool I got the first move right. Will look at what to do after Black's .... Rc5 tomorrow (:
Jul-22-18  Walter Glattke: 23.Rxd5 Qxd5 24.Nd4 (24.Ne5 Qd6!) Qd6 25.Qxd6 Bxd6 26.Bd5+ Kh8 27.Nd6 cxb3 28.Nxc7 Rxc7 no check on c1, so failed by29.Re8+ Kg7 30.Rg8+ Kh6 31.axb3 perhaps draw.
Jul-22-18  diagonalley: i think i'll go back to bed
Jul-22-18  Walter Glattke: Black wins after 23.Ng5 fxg5 24.Bxd5+ Qxd5 25.Qxc7 Qxd1 26.Rxd1 Rxc7 28.cxb3 1 knight ahead.

24.Qd4 Nf6 (24.-Bxg2? 25.Qh8+ Kf7 26.Qxh7+ Bg7 27.Qxg7#) 25.Bxd5+ Qxd5 26.Qxf6 Bg7 27.Qxg7+ Rxg7 28.Rxd5 now 1 bishop for white.

Jul-22-18  Walter Glattke: Really hard this morning.
Jul-22-18  Honey Blend: I was trying to make <23. ♗h3> work, with the idea that 23. ... ♗xf3 24. ♗e6+ ♔g7 25. ♖xd7+! ♖xd7 26. ♕xf6+:


click for larger view

After 26. ... ♔h6 27. ♗c1+ and mate follows.

Or 23. ♗h3 g5 24. ♘xg5! fxg5 25. ♕xg5+ ♔f7 26. ♕f5+ ♔g8 27. ♕e6+! ♗xe6 28. ♗xe6#


click for larger view

Probably best reply here is 23. ... c3, and after 24. ♗xc3 ♖xc3 25. ♖xd5, now Black can't recapture the ♖ because of the fork 26. ♗e6+.


click for larger view

The ♘d7 is attacked twice and pinned by the ♗h3, so 25. ... ♘c5 looks like the best place for it. After 26. ♕d2 (protecting the ♖) ♖xf3 27. ♗xc8 ♖xc8 28. ♖d8!, Black has to play very carefully. For example, 28. ... ♕c6 29. ♖xf8+! ♔xf8 30. ♕h6+ ♔g8 31. ♖e7! with inevitable mate.


click for larger view

Either that, or 28. ... ♕c7 29. ♖ee8 looks crushing.

Jul-22-18  Honey Blend: <After 26. ♕d2 (protecting the ♖) ♖xf3 27. ♗xc8 ♖xc8 28. ♖d8!, Black has to play very carefully.>

Oops. That was supposed to be 26. ♕d2 ♖xf3 27. ♗xc8 ♕xc8 28. ♖d8


click for larger view

Jul-22-18
Premium Chessgames Member
  takchess: Nice tension in the position. Intuition suggested RxB or a Knight move .thats all for me.
Jul-22-18  mel gibson: I considered the text move but saw that White would lose it's Bishop.

Stockfish 9 disagrees with the text -
it says 23 Bh3.

23. Ng5 (23. Bh3 (♗g2-h3 c4-c3 ♗b2xc3 ♖c7xc3
♖d1xd5 ♕a8xd5 ♗h3-e6+ ♕d5xe6 ♖e1xe6 ♖c3-d3 ♔g1-g2 ♖c8-c3 ♘f3-d4 ♗f8-c5 ♖e6-e8+ ♔g8-f7 ♕f4-e4 ♘d7-e5 ♖e8xe5 f6xe5 ♕e4-d5+ ♔f7-f8 ♘d4-e6+ ♔f8-e7 ♕d5xe5 ♗c5-d6 ♕e5-e4 ♔e7-d7 ♘e6-d4 ♖d3xd4 ♕e4xd4 ♖c3-c7 ♕d4-d5 ♔d7-e7 b3-b4 ♖c7-d7 f2-f4 ♗d6-c7 ♕d5-e4+ ♔e7-f6 ♔g2-f3 ♗c7-d6 ♕e4-c6 ♔f6-e6 ♕c6-c8 ♔e6-e7 ♕c8-h8 ♔e7-e6 ♕h8-d4 ♖d7-c7 a2-a3 ♖c7-d7 g3-g4 ♔e6-f7 ♕d4-c4+ ♔f7-f6 g4-g5+ ♔f6-e7 ♔f3-g3) +3.49/35 133)

score for White +3.49 depth 35

forcing Stockfish to look at the text move 23.Ng5 we have:

(23.Ng5 .. Bxg2

(♗d5xg2
♖d1xd7 ♗g2-h3 ♘g5xh3 ♖c7xd7 ♕f4xf6 c4-c3 ♗b2xc3 ♖c8xc3 ♕f6xc3 ♗f8-h6 ♕c3-e5 ♕a8-f8 ♘h3-g5 ♗h6xg5 ♕e5xg5 ♕f8-d6 h2-h4 ♖d7-f7 ♕g5-c1 ♕d6-d4 ♖e1-e8+ ♔g8-g7 ♕c1-e1 ♖f7-d7 ♔g1-h2 ♖d7-f7 ♖e8-e2 ♔g7-g8 ♔h2-g1 ♖f7-d7 ♔g1-g2 ♖d7-f7 ♖e2-e8+ ♔g8-g7 ♕e1-e2 h7-h5 b3-b4 ♔g7-h6 b4-b5 ♕d4-d5+ f2-f3 ♖f7-d7 ♖e8-h8+ ♔h6-g7 ♕e2-b2+ ♕d5-d4) -1.07/39 97)

score for Black -1.07 depth 39

Jul-22-18  WorstPlayerEver: First I tried to make 23. Ne5 Bxg2 24. Nxd7 Rxd7 25. Rxd7 work, but it fails: 25... Bh3, wot a disappointment!

Looked briefly at other solutions. Then I gave up. However, when I peeped at the real solutions, it gave me new hope. Not bad, not bad.

Jul-22-18
Premium Chessgames Member
  malt: I got 23.Ng5 B:g2 24.R:d7 Black has
(24...fg5 25.Qf7# )
(24...R:d7 25.Q:f6 Bg7 26.Qe6+ Kh8 27.Q:d7 c3 28.B:c3 R:c3 29.Re8+ )

Struggling with 24...Bh3 looking at
25.Ne4

Jul-22-18
Premium Chessgames Member
  agb2002: White is one pawn down.

Black threatens cxb3 and c3.

The black castle looks weak and White's LSB x-rays the black queen. These details suggest 23.Ng5:

A) 23... fxg5 24.Qd4

A.1) 24... Bxg2 25.Qh8+ Kf7 26.Qh7+ Bg7 27.Qxg7#.

A.2) 24... Nf6 25.Qxf6 Bg7 26.Bxd5+ Qxd5 (26... Kh8 27.Bxa8 Bxf6 28.Bxf6+ wins decisive material) 27.Rxd5 Bxf6 28.Bxf6 + - [B vs p].

B) 23... Bxg2 24.Rxd7

B.1) 24... Rxd7 25.Qxf6

B.1.a) 25... Bg7 26.Qe6+ Kh8 (26... Kf8 27.Qxd7 wins) 27.Qxd7 Rg8 (27... Bxb2 28.Qxh7#) 28.Bxg7+ Rxg7 29.Re8+ wins.

B.1.b) 25... Rg7 26.Qe6+ Kh8 27.Nf7+ Kg8 28.Nh6+ Kh8 29.Qg8#.

B.1.c) 25... c3 26.Qe6+ Kh8 (26... Kg7 27.Qxd7+ Kh6 28.Qxh7+ Kxg5 29.Qh4+ Kf5 30.Qf4#) 27.Qxd7 Bg7 28.Bxc3 Rxc3 (28... Bxc3 29.Qxh7#; 28... Rg8 29.Bxg7+ as in B.1.a) 29.Re8+ and mate in two.

B.2) 24... f5 25.Qd4 wins.

B.3) 24... fxg5 25.Qf7#.

B.4) 24... Bh3 25.Nxh3 Rxd7 26.Qxf6

B.4.a) 26... Bg7 27.Qe6+

B.4.a.i) 27... Rf7 28.Ng5 Rcf8 29.Nxf7

B.4.a.i.1) 29... Rxf7 30.Bxg7 Kxg7 31.Qxc4 wins a pawn.

B.4.a.i.2) 29... c3 30.Nh6+ Kh8 31.Qg8+ Rxg8 32.Nf7#.

B.4.a.i.3) 29... Bxb2 30.Ng5+ Kh8 (30... Kg7 31.Qe7+ Kh6 32.Qxh7+ Kg5 33.Qh4+ Kf5 34.Qf4#) 31.Qxc4 wins a pawn.

B.4.a.ii) 27... Kh8 28.Qxd7 Bxb2 29.Re7 Rf8 30.Rxh7+ Kg8 31.Ng5 looks winning due to the double threat Qe6+ and Rh8+ followed by mate in both cases.

B.4.b) 26... Rg7 27.Qe6+ Kh8 28.Bxg7+ followed by bxc4 wins a pawn at least.

B.4.c) 26... c3 27.Bxc3 wins a pawn at least (27... B(R)g7 28.Qe6+ as above).

C) 23... Rc5 24.Rxd5

C.1) 24... fxg5 25.Qd4 wins.

C.2) 24... Rxd5 25.cxd4 fxg5 26.Qe4 Rcc5 (26... Ne5 27.Bxe5 wins decisive material) 27.Qxd5+ Rxd5 28.Qxd5+ Qxd5 29.cxd5 + - [R vs n].

Jul-22-18
Premium Chessgames Member
  OhioChessFan: I don't say this very often, but this was a rather easy Sunday. I concede I wasn't as thorough as <agb> but that's the advantage of knowing it's a puzzle move.
Jul-22-18
Premium Chessgames Member
  chessgames.com: We stuck the computer on this one for 6 hours last night, knowing well there would be a difference of opinion: analysis of move 23.?

Ironically, SF would award a question-mark (or at least a “better is...”) to 23.Ng5, ranking it as only the third best option in a winning position.

We believe that Bronstein, one of the original John Henrys of the man-vs-machine era, would have had it no other way.

Jul-22-18  Howard: This was one of three strong tourmanents that Geller won in 1975-76, when he was getting a "second wind" despite turning 50 during that time.

The big one that he won during this time was undoubtedly Moscow 1975--exceptionally tough event!

Jul-22-18
Premium Chessgames Member
  landshark: Next day guess-the-move I chose 24.Qd4 instead of the game continuation Rxd5. So much for my Sunday fun! I wonder how much weaker my move was...
Jul-22-18
Premium Chessgames Member
  landshark: One of the nice things about 24.Qd4 is it prevents any hanky-panky with ....c3 because 25.Bxc3 Rxc3 loses to 26.Bxd5+. Maybe 24....Bc6 25.Bh3 could follow with pressure -
Jul-22-18
Premium Chessgames Member
  ray keene: The analyses using modern engines are fascinating and show the amazing resources concealed in the position. I guess Bronstein played instinctively to a great extent ....the concrete variations found more recently were not even thought of at the time.
Jul-22-18  Cheapo by the Dozen: Wow. I correctly guessed that the answer would involve a discovered attack against d5 with the hope of pivoting to an attack along the a2-g8 diagonal. But I didn't come close to seeing the actual game-winning ideas.
Jul-23-18  stst: White is a pawn down, to open up and break in, the f6 pawn is target. Noted also the virtual pin of the Black Q-B and White B, after the N darts out.... so try this line: 23.BxP NxB
24.QxN Rf7
25.QxR+ (Q-sac to gain control) KxQ
26.Ng5+ ....
Then variations ...
(A)Kg7
(B)Kg8
(C)Kf6

.... will see....

Jul-24-18  Honey Blend: I couldn't imagine a human player would dare go for 25. ... ♕xd5!, but SF somehow picked it to avoid all the mating tricks: 25. ... ♕xd5 26. ♗e6+ ♕xe6 27. ♖xe6 ♖d3 (I am not 100% sure about ♖d3 but I feel this is to prevent ♕d4) and evaluates it only at a little above +2, which should give White a slight edge in this complicated-looking ♕ vs ♖♗ position, but nothing tangible at the moment. Black has eliminated White's dangerous Bishop pair. White has no direct attack nor passed pawns, and the ♗f8 defends the dark squares well. The center files are open with Black's rooks having some control; it looks like Black can hold the game quite a bit with fair chances of counterplay.


click for larger view

I wonder if during that time, Bronstein saw 23. ♗h3 and the 25. ... ♕xd5! line above, and avoided it altogether because of that!

Jump to page #    (enter # from 1 to 4)
search thread:   
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
NOTE: You need to pick a username and password to post a reply. Getting your account takes less than a minute, is totally anonymous, and 100% free—plus, it entitles you to features otherwise unavailable. Pick your username now and join the chessgames community!
If you already have an account, you should login now.
Please observe our posting guidelines:
  1. No obscene, racist, sexist, profane, raunchy, or disgusting language.
  2. No spamming, advertising, duplicate or nonsense posts.
  3. No malicious personal attacks, including cyber stalking, systematic antagonism, or gratuitous name-calling of any member Iincludinfgall Admin and Owners or any of their family, friends, associates, or business interests. If you think someone is an idiot, then provide evidence that their reasoning is invalid and/or idiotic, instead of just calling them an idiot. It's a subtle but important distinction, even in political discussions.
  4. Nothing in violation of United States law.
  5. No malicious posting of or linking to personal, private, and/or negative information (aka "doxing" or "doxxing") about any member, (including all Admin and Owners) or any of their family, friends, associates, or business interests. This includes all media: text, images, video, audio, or otherwise. Such actions will result in severe sanctions for any violators.
  6. NO TROLLING. Admin and Owners know it when they see it, and sanctions for any trolls will be significant.
  7. Any off-topic posts which distract from the primary topic of discussion are subject to removal.
  8. The use of "sock puppet" accounts to circumvent disciplinary action taken by Moderators is expressly prohibited.
  9. The use of "sock puppet" accounts in an attempt to undermine any side of a debate—or to create a false impression of consensus or support—is prohibited.
  10. All decisions with respect to deleting posts, and any subsequent discipline, are final, and occur at the sole discretion of the Moderators, Admin, and Owners.
  11. Please try to maintain a semblance of civility at all times.
Blow the Whistle See something that violates our rules? Blow the whistle and inform a Moderator.

NOTE: Keep all discussion on the topic of this page. This forum is for this specific game and nothing else. If you want to discuss chess in general, or this site, visit the Kibitzer's Café.

Messages posted by Chessgames members do not necessarily represent the views of Chessgames.com, its employees, or sponsors. All Moderator actions taken are at the sole discretion of the Admin and Owners—who will strive to act fairly and consistently at all times.
Spot an error? Please submit a correction slip and help us eliminate database mistakes!
This game is type: CLASSICAL (Disagree? Please submit a correction slip.)

Featured in the Following Game Collections[what is this?]
Great Midgame Tactical Finishes
by Easy Point
23.? (April 24, 2005)
from Sunday Puzzles, 2004-2010 by Phony Benoni
Catalans
by mneuwirth
Chess Informant Best Games 2
by Olanovich
23.? (Sunday, April 24)
from Puzzle of the Day 2005 by Phony Benoni
Round 1 Sept 1 (bye: Smyslov)
from Teesside 1975 by Tabanus
23... Bxg2!? 24. Rxd7! Bh3!? puts up max resistance
from Defensive Combinations by nakul1964
Game 174
from Guinness Book - Chess Grandmasters (Hartston) by maple227
23... Bxg2!? 24. Rxd7! Bh3!? puts up max resistance
from Defensive Combinations by patzer2
good tactic
by hartkoka
Game 174
from Guinness Book - Chess Grandmasters (Hartston) by Qindarka
Volume 20 - 3rd Place - 39 pts. (2)
from Chess Informant: 640 Best Games - Part 3 by TheAlchemist
partij 69
from hans bouwmeesters 100 briljante partijen by i.abderrahim
23.? (April 24, 2005)
from Sunday Puzzles, 2004-2010 by Jaredfchess
Game 174 in The Guinness Book of Chess GMs by William Hartston
from Cats, KIDS playing in the Gruenfelds by fredthebear
24. Rxd5! is a deflection to set up a winning pin
from Pin and Deflection by patzer2
Chess Informant Best Games 2
by koinonia
Game 193
from # Chess Informant Best Games 101-200 by Qindarka
23.? (Sunday, April 24)
from POTD Catalan by takchess


home | about | login | logout | F.A.Q. | your profile | preferences | Premium Membership | Kibitzer's Café | Biographer's Bistro | new kibitzing | chessforums | Tournament Index | Player Directory | Notable Games | World Chess Championships | Opening Explorer | Guess the Move | Game Collections | ChessBookie Game | Chessgames Challenge | Store | privacy notice | contact us
Copyright 2001-2019, Chessgames Services LLC