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

(If you register a free account you won't see all these ads!)
Efim Bogoljubov vs Hans Mueller
Triberg - (1934), Triberg GER
Spanish Game: Exchange. Keres Variation (C68)  ·  1-0
ANALYSIS [x]

FEN COPIED

Click Here to play Guess-the-Move
Given 66 times; par: 19 [what's this?]

NOTE: You are using our new chess viewer, "Olga." For more info see the Olga Quickstart Guide. You can switch back to the old viewer (pgn4web) from the pulldown menu below. If you have questions or suggestions see our Olga chessforum.

explore this opening
find similar games 1 more Bogoljubov/H Mueller game
+ sac: 15.Qxd4 PGN: download | view | print Help: general | java-troubleshooting

TIP: pgn4web is our default viewer, but we offer other choices as well. You can use a different viewer by selecting it from the pulldown menu below and pressing the "Set" button.

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]

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Oct-02-11  ajile: <morfishine: <sevenseaman> Did you read my post? The knight is not immune to capture on <d5>. Black plays <14...Nxd5> which threatens Whites Queen: an important tempo We know that Black will lose the exchange; the Question is: Whats the best way for Black to lose the exchange?

The ans: <14...Nxd5>

The real point of the puzzle is that Black loses the exchange whether white plays <14.Nb5> or <14.Nd5>>

But does losing the exchange mean losing the game?

If Black simply takes the Nd5 what does White have long term?

After 14.Nd5 cxd5, 15.c3 Qd6 16.cxd4 dxe4 Black has a pawn plus minor piece for the rook. Black has plenty of fight left in these positions so is the puzzle fair when Black made a poor move to quickly lose?

Oct-02-11  Patriot: I looked at this for about 20 minutes and decided on 14.Nd5. Here's some sample lines I considered:

A) 14...cxd5 15.c3 Rxe4 16.Qa7

B) 14...Bxd5 15.c3 Rxe4 16.Qa7

C) 14...Nxd5 15.exd5 leaves the bishop hanging and 16.c3 is threatened.

D) 14...Rxe4 15.Qa7

In line C, I made the mistake of evaluating the position too early. I spent most of my time looking at other threatening moves (like 14.a3) so I spent less time on the main line.

Oct-02-11
Premium Chessgames Member
  morfishine: <sevenseaman> No problem: once its noticed that White can force the loss of the exchange, it becomes clear. Then, the ball is in Blacks court who has to decide: "Whats the best way for me to lose the exchange?" He did not chose the best way.

<Ajile> On your comment <Black has plenty of fight left in these positions so is the puzzle fair when Black made a poor move to quickly lose?> Very Good Point. If an insane puzzle (Sunday) features best play, then we can really enjoy the outcome. If it doesn't, then everybody is quick to point out alternatives. Fair or not, it sure generates kbitzing! As long as we learn something from it, thats all one can ask for.

I admire those solvers who forward very good alternatives to what actually happened. We see it often. Its one of the most enjoyable features of the POTD

<agb2002> I wouldn't worry about 2-centipawns: Both 14.Nb5 and 14.Nd5 force the loss of the exchange, which is all Bogo got anyways

Oct-02-11  stst: see two main lines:
1. the crack for W Q to get to a7, then Qa8 will mate, 2. a fork right at c3, after the N goes (a sac, most probably.)

2 is easier to achieve, though both 1 & 2 depend on whether Bk falls into the trap.

Line 2 goes first:
14.Nd5, if either cxd5 or Bxd5
15.c3 and wins material.
if 14...Rxd5 exd5, Bk loses the R

Line 1:
14.Rd1, if Rxd1
15.Qa7 Kd8
16.Rxd1+, Bk loses the R too.
if K does not move, Qa8# next.

see how the challenger to Alekhine thinks....

Oct-02-11  stst: ya, he saw something much more ingenious - a subsequent fork for N@c6!!
Oct-02-11  ajile: The scare tactic worked so I guess that's all that counts. Black played a suboptimal move and lost quickly.

The game is pretty but I don't think it really qualifies for a real puzzle since Black fights for a draw with correct play.

Oct-02-11
Premium Chessgames Member
  agb2002: <morfishine: ...

<agb2002> I wouldn't worry about 2-centipawns: Both 14.Nb5 and 14.Nd5 force the loss of the exchange, which is all Bogo got anyways>

I was being a bit ironic about the common habit of comparing computer evaluations ;-)

Oct-02-11  newton296: I noticed blacks Q was only protection of Rd4 . okay, tried to deflect the Q with a3 and saw Qd6 loses to Nf3 and ...Qc5 leaves the rook pinned so Ne2 winning exchange. then I saw ...Qb6 and dead end.

then I saw Nd5 cxd5 c3 Qxb4 and figured that was the best move but black is still fighting. alright , let me check solution. hmm? I got the right line but black panicked and blundered the game away on the spot! at least I found the main line but houdini says best play is about even.

Efim Bogoljubov - Muller, Triberg - 1934


click for larger view

Analysis by Houdini 1.5a w32:

1. (0.39): 16...Qb6 17.Qxb6 cxb6 18.exd5 Nxd5 19.Rfe1 b5 20.c4 bxc4

2. (1.01): 16...b6 17.exd5 Nxd5 18.Rac1 Nf6 19.Rcd1 Re8 20.Rd2 Qa3

Oct-02-11  newton296: <Helloween:Black's best defense was 14...cxd5 when 15.c3 Qxb2 16.Qxd4! Qb6 17.Qxb6 cxb6 18.exd5 Nxd5 when Black looks to have some compensation for the exchange, but 19.f4! removes all doubt of White's ± advantage.>

f4 removes all doubt? how about ...g6 Rc1 ...Rd8? still pretty even. I'll bet you couldn't win this endgame with 10 tries vs fritz or (EGT)

houdini 24 ply can't even find a win!

Efim Bogoljubov - Muller, Triberg - 1934


click for larger view

Analysis by Houdini 1.5a w32:

1. (0.33): 21.c4 Nb4 22.a3 Nd3 23.Rcd1 Nxe5 24.fxe5 Rxd1 25.Rxd1 Bxc4 26.Kf2 b5 27.Ke3 Kc7

2. (0.31): 21.a3 f6 22.Nf3 Kb8 23.Nd4 Bf7 24.f5 b5 25.Rf3 Rc8 26.Kf2

Oct-02-11  stst: < Z...c: I don't get 14.... Qc5 - why cannot Black take that knight by any one of his pawn, knight or bishop?>

-- of these three, best is NxN, but still the fork of c3 exists. The other two (PxN or BxN,) c3 right the way to fork.

Oct-02-11  hedgeh0g: Finding 14.Nd5!! wasn't too difficult since the black queen and rook are begging to be pawn-forked. The key to the combination is the white queen's access to a7, where, combined with the Ne5, it poses some serious problems for Black's king. Without this resource, Black would have a Rxe4 intermezzo.
Oct-02-11  checkmateyourmove: Ridiculousnessssss
Oct-02-11
Premium Chessgames Member
  Diademas: I would never have found that move and Im still not sure its sound. Looking forward to good old monday, when allmost all of us are heroes!
Oct-02-11
Premium Chessgames Member
  TheBish: Bogoljubov vs Muller, 1934

White to play (14.?) "Insane"

It's hard to believe how many of these positions are right out of the opening! How great is it to have a winning position before move 20?

I decided before too long that the winning move must have something to do with vacating the knight from c3 to set up c2-c3, forking the major pieces. Nothing seemed to work, since any move of the Nc3 allowed 14...Rxe4, attacking the queen. That is, until I found the right square.

14. Nb5!!

This is such an outrageous move, I had to give it two exclams. Of course, 14...Qxb5 allows simply 15. Qxd4, winning the exchange, as does 14...axb5 or 14...cxb5 15. c3 Rxe4 16. cxb4 Rxe3 17. fxe3.

14...Rc4

Naturally, 14...Rxd6 allows 15. Nxd6+, but any other rook move (such as 14...Rdd8) allows 15. Na7+ Kb8 16. Naxc6+ (the point!) bxc6 17. Nxc6+, winning the queen.

15. Qa7!

Threatening 16. Qa8#. Black was hoping for 15. Nxc4 Bxc4, regaining the exchange.

15...Nd7

Or 15...Kd8 16. Qb8+ Bc8 (or 16...Ke7 17. Qxh8) 17. Nxc4, winning the exchange.

16. Qa8+ Nb8 17. Na7+ Kd8 18. Qxb8+ Bc8 19. Nxf7+, winning.

Oct-03-11
Premium Chessgames Member
  TheBish: I went for the 14. Nb5 line (didn't fully analyze 14. Nd5), but one point I didn't see (once I saw the game score) was that after 14. Nd5 Nxd5 15. exd5 Rxd5 16. Qa7 Kd8 17. Qb8+ Bc8? and now not 18. Nxf7+ but 18. Nxc6+! winning the queen! (Fritz pointed this out to me.)
Oct-03-11
Premium Chessgames Member
  TheBish: I guess I missed this after all (as did everyone else who opted for 14. Nb5 over 14. Nd5). Fritz points out that 14. Nb5 is answered by 14...Qxb5 15. Qxd4 Rd8 16. Qc3 Nxe4 17. Qe3 Qxe5 18. Rfe1 f5 19. f3 Qxb2 20. fxe4 Qb6!, when Black has two pawns for the exchange, with an equal position.
Oct-03-11  M.Hassan: I went through two lengthy ways. one starting with 14.f4 and the other with 14.Rad1.None produces mate in several moves or appreciable advantage to one side. I am tired and can not produce the two lines and I admit that 14.Nd5 never occured to me.
Oct-03-11
Premium Chessgames Member
  morfishine: <ajile> Your move-order <14.Nd5 cxd5, 15.c3 Qd6 16.cxd4 dxe4> is even better. Also, your comment about <scare tactic> explains a lot. Muller sure looked like he was 'rattled'
Oct-03-11  sevenseaman: <TheBish: I guess I missed this after all (as did everyone else who opted for 14. Nb5 over 14. Nd5). Fritz points out that 14. Nb5 is answered by 14...Qxb5 15. Qxd4 Rd8 16. Qc3 Nxe4 17. Qe3 Qxe5 18. Rfe1 f5 19. f3 Qxb2 20. fxe4 Qb6!, when Black has two pawns for the exchange, with an equal position.>

The Bish after <14...Qxb5 15. Qxd4 Rd8 > how about <16. Qa7> in lieu of 16. Q c3>?

Kindly check this one with Fritz and see if it is enthused. To me it looks fairly won for White. Black taking White's e5N is of little help as the White Rs come into play to reinforce Q's action along the base line.

You may work out the details for yourself, the disposal is surprisingly swift.

Pending Fritz's verdict, I believe <14. Nb5> achieves the same 'Doppler' effect as done by <14. Nd5>.

Oct-03-11
Premium Chessgames Member
  morfishine: <sevenseaman> and <TheBish>

<Qa7> is one of White's main threats; Thats why keeping the g1-a7 diagonal blocked to white queens access is the basis of Black's defense, even if it means letting a rook die there. After cxd4 the diagonal is still blocked, this time by a white pawn! Keeping this diagonal blocked gives Black just enough time to consolidate and hold-on, at least for awhile, and certainly longer than Muller!

Oct-03-11  sevenseaman: <cxd4> where and when? Which move number? This is the position I am talking about (after White's <16. Qa7> move).


click for larger view

<The Bish> suggests <16. Qc3> and I propose <16. Qa7>

Work out your line from here.

Oct-03-11  ajile: <TheBish: Bogoljubov vs Muller, 1934 White to play (14.?) "Insane"
It's hard to believe how many of these positions are right out of the opening! How great is it to have a winning position before move 20?>

But in this game it's not a winning position. It took a bad move by Black to make it winning.

Oct-03-11  oh5252: This quiz is somewhat strainge.
14...cxd5 gives nothing to white.
Jan-19-12  sevenseaman: Going by his play in this game alone, Bogoljubov must have been one of the finest thinkers of the game.

Having thoroughly studied his brilliant moves from the 14th onwards

<14. Nd3 Ng4 15. Qe2 Qa5 16. f3 Ne5 17. b4 Rxb4 18. Nxb4 Qxb4 19. Qe3 Qb2 20. Rb1 Qxc2 21. Qa7 Kd7 22. Qd4>

was the best I could find on a day barely 4 months later.

May-02-14  Gottschalk: Game from the match Bogoljubow x Hans Mueller Bogo scores (+7 =5 -3)
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, 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, or profane language.
  2. No spamming, advertising, or duplicating posts.
  3. No personal attacks against other members.
  4. Nothing in violation of United States law.
  5. No posting personal information of members.
Blow the Whistle See something that violates our rules? Blow the whistle and inform an administrator.


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, you might try the Kibitzer's Café.
Messages posted by Chessgames members do not necessarily represent the views of Chessgames.com, its employees, or sponsors.
Spot an error? Please submit a correction slip and help us eliminate database mistakes!
<This page contains Editor Notes. Click here to read them.>
This game is type: BLITZ (Disagree? Please submit a correction slip.)

Featured in the Following Game Collections [what is this?]
Diocletian's favorite games
by Diocletian
The horses save White's bacon
from Knights Add Spice I Gives Fredthebear Heartburn by fredthebear
Sp exch 1-0 18 drag Damoffer m.m.
from xfer's favorite games 2011 by xfer
Spanish, Exchange. Keres Var (C68) 1-0 Q sac, Ns feast w/fork
from Favorite Minis* of Fredthebear's Chess Art ! ! by fredthebear
Later Study
by fispok
Spanish, Exchange. Keres Var (C68) 1-0 Q sac, Ns feast w/fork
from Decoys To-o, Deflections From, Remove the Guard by fredthebear
Cavalry charge
from Super Bogo 3 by policrates
Spanish, Exchange. Keres Var (C68) 1-0 Q sac, Ns feast w/fork
from Hammer the 6th Rank (Black hits 3rd Rank) II by fredthebear
Spanish, Exchange. Keres Var (C68) 1-0 Q sac, Ns feast w/fork
from Sunken Spanish Galleons Summoned Fredthebear by fredthebear
Things of Booty
by akatombo
zwolnienie pola
from uponthehill's favorite games by uponthehill
Game 72
from Veliki majstori saha 17 BOGOLJUBOV (Petrovic) by Chessdreamer
Spanish, Exchange. Keres Var (C68) 1-0 Q sac, Ns feast w/fork
from QThee Queen is Meaner Volume Three!?! by fredthebear
Blitzpartien
by shakespeare
The horses save White's bacon
from A B C Players Spelled Fredthebear by fredthebear
14.? (Sunday, May 30)
from Puzzle of the Day 2004 by Phony Benoni
Spanish, Exchange. Keres Var (C68) 1-0 Q sac, Ns feast w/fork
from N Checkmates Collected by Fredthebear (& Traps) by fredthebear
Spanish, Exchange. Keres Var (C68) 1-0 Q sac, Ns feast w/fork
from 1920s Roar and 1930s Depress Fredthebear by fredthebear
14.? white to move
from Cultus' favorite games by Cultus
14.? (May 30, 2004)
from Sunday Puzzles, 2004-2010 by Phony Benoni
plus 25 more collections (not shown)


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 2001-2017, Chessgames Services LLC