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Nikolay Bakulin vs Viktor Korchnoi
URS-ch qf (1950), Leningrad
Nimzowitsch Defense: Scandinavian. Advance Variation (B00)  ·  0-1



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Given 12 times; par: 62 [what's this?]

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find similar games 1 more N Bakulin/Korchnoi game
sac: 38...Nc4+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Jun-08-16  diagonalley: not as usual, i was NOT in the same camp as <al wazir>, having fallen for the somewhat tempting 38.... R-B7+ :-(
Jun-08-16  patzer2: For today's Wednesday puzzle, count me among those who missed Korchnoi's mate-in-four 38...Nc4+! 39. Kxd3 Rf2 40. Rg7+ Kh4 41. Rf7 Rd2#.

If the King moves to the back rank instead of taking the Bishop, it's mate-in-one (i.e. 39. Kc1 Rf1#; 39. Kd1 Rf1#; 39. Ke1 Rf1#).

White's decisive mistake was the pawn grab 35. Rxa7? allowing 35...Nf3+! (-3.46 @ 27 depth, Deep Fritz 15).

Instead of 35. Rxa7?, the computer indicates White can force a draw by repetition with 35. Rg7+! Kf4 36. Kf2 Rc8 37. e6 Rxc3 38. Rf7+ Kg5 39. e7 Rc2+ 40. Ke1 Ng2+ 41. Kd1 Ne3+ 42. Ke1 Ng2+ 43. Kd1 Ne3+ 44. Ke1 Ng2+ = (0.00 @ 27 depth, Deep Fritz 15).

Jun-08-16  gofer: A far more interesting puzzle would be this...

<35 ... ?>

click for larger view

White has just picked up Pa7 and now Black is four pawns down for its knight.

How can black best recover this situation...?


I was with <Al Wazir> and <Phony Benoni>...

Premium Chessgames Member
  WorstPlayerEver: It is as lovely in its simplicity as it is positionally instructive: how the Black pieces work together against the White king.
Jun-08-16  saturn2: I saw ..Nc4, if the white king
a. takes the bishop Rf2 follows
b. retreats to the first rank Rf1 decides.
Jun-08-16  patzer2: Korchnoi's unusual opening 1. e5 Nc6 2. d4 (I prefer 2. Nf6 forcing transposition to better known lines) 2...d5 3. e5 Bf5 = is the seldom played (currently 117 games in the opening explorer) Nimzowitsch Defense: Scandinavian. Advance Variation (B00).

The Opening Explorer indicates that after 3...Bf5 Black's chances are quite good, as Black has won slightly more often (39.3%) than White (36.8%) in this line. Stockfish 7 gives the continuation 4. c3 e6 5. Nd2 = to (0.34 @ 30 depth) with a near level game.

An instructive game in this 1. e5 Nc6 2. d4 d5 3. e5 Bf5 line is Spielmann vs Nimzowitsch, 1920 with annotations by GM Ray Keene.

Jun-08-16  Returning Native: 'SNEAKy;Korchnoi is incredible. I wonder at what point he saw the move ...Nc4+ !!' Strange, I found Nc4 straightaway. It was the followup stumped me
Premium Chessgames Member
  NM JRousselle: This game is another great example of the piece being better than the pawns.
Jun-08-16  YouRang: D'oh - I spent a bunch of time on <38...Rf2+> and figured out that it wins since the B+N can form a back-rank mating net. I thus assumed it was the solution (I suppose it could still be counted as *a* solution).

Here is the mainline:

click for larger view

Now, <39.Ke1> seems best (39.Kc1 Nc4 ; 39.Kd1 Bc2 ; 39.Ke3? Re2#)

Then, <39...Re2+ 40.Kd1> (40.Kf2 Nf3 )

click for larger view

Here <40...Nf3!> hits all the right squares to (1) prevent escape at d2 and (2) threaten Re1#. This leaves <41.Kc1 Rc2+ 42.Kb1> (42.Kd1 Rb2 )

click for larger view

Then the finish: <42...Nd2+ 43.Ka1 Bc4>

click for larger view

and there's nothing to stop ...Ra2# next. (There are places where white can pause this line with Rg7+, but Black just plays ...Kh4 and continues. The white pieces are rather pathetic.)

How annoying that there was a much simpler solution by forming a pretty Arabian R+N mating net.

Premium Chessgames Member
  kevin86: Mate will come soon!
Premium Chessgames Member
  gawain: OMG.

That's all I can say.

Premium Chessgames Member
  doubledrooks: 38...Nc4! sets up a mating net. For example, 39.Kxd3 Rf2 and Rd2# is coming up.
Jun-08-16  posoo: NOBBIcus! now DIS is a moove dat da old posoo cod NEVER understand or acheve. DIS IS WHY da man is known in deze parts as


Jun-08-16  morfishine: <YouRang> If it wins, its a solution

Thats Rule #1 for analyzing



Premium Chessgames Member
  Longview: <Patzer2>I am proud to be in your company. I only saw the potential check but quit when I saw it lost the bishop and went no further in my analysis. So much for the "safe move" theory.
Premium Chessgames Member
  Longview: Just to get my mind off of the mundane:

Vanderbilt physicist Joe Hamilton played a key role in the discovery of element 117, a new super-heavy element that has been created and identified by an international scientific team.

Discovery of the new element provides new information about the basic organization of matter and strengthens the likelihood that still more massive elements may form an “island of stability”: a cluster of stable super-heavy elements that could form novel materials with exotic and as yet unimagined scientific and practical applications.

The report of the discovery – made by scientists from the Joint Institute for Nuclear Research in Dubna, Russia, Oak Ridge National Laboratory, Vanderbilt University, Lawrence Livermore National Laboratory and the Research Institute for Advanced Reactors in Dimitorovgrad, Russia – has been accepted for publication in the Physical Review Letters.

Atomic nuclei consist of protons and neutrons. Elements are determined by the number of positively charged protons in their nuclei. Atoms with the same number of protons but different numbers of neutrons have the same chemical properties but weigh slightly differently and are called isotopes. The lightest natural element is hydrogen with one proton. The heaviest natural element is uranium with 92 protons.

In recent years, physicists at Dubna led by Yuri Oganessian have developed a method of making super-heavy elements by smashing calcium ions, with 20 protons, into various targets. In this way they had discovered elements 114, 115, 116 and 118. They were unable to create element 117, however, because the target required was itself a very exotic and expensive element, berkelium, with 97 protons.

When I talked to the people at Oak Ridge National Laboratory who have the ability to create berkelium, I was told it would cost $3.5 million“When I talked to the people at Oak Ridge National Laboratory who have the ability to create berkelium, I was told it would cost $3.5 million,” said Hamilton, the Landon C. Garland Distinguished Professor of Physics. “That was too much, so I kept looking.”

After several years of checking regularly with his Oak Ridge contacts, Hamilton finally saw the opportunity he was looking for when he heard that they had agreed to make the element californium for a commercial project. He realized that berkelium could be extracted at the same time so he worked out a deal that would produce the target material.

The two-year experimental campaign began at the High Flux Isotope Reactor in Oak Ridge with a 250-day irradiation in the world’s most intense neutron flux that produced 22 milligrams of berkelium. This was followed by 90 days of processing at Oak Ridge to separate and purify the berkelium. The material was sent to Dimitrovgrad for target preparation and then transferred to Dubna, where it was placed in one of he world’s most powerful heavy ion accelerators. Six atoms of element 117 were produced after 150 days of bombardment. The data from these six events were analyzed at Dubna and Livermore, and the results were double-checked by the entire team.

Element 117 is the 26th new element that has been added to the periodic table since 1940. As scientists created heavier and heavier artificial elements, they became increasingly unstable until reaching a limit at element 113. Then the Dubna scientists developed their calcium-bombardment technique and lifetimes began to climb.

The longer lifetimes of the new isotopes observed in our discovery of element 117 makes it possible to study the chemistry of these super-heavy elements.“These new elements provide important tests of nuclear theories,” said Hamilton. “The longer lifetimes of the new isotopes observed in our discovery of element 117 makes it possible to study the chemistry of these super-heavy elements. These studies will test theoretical predictions that elements beyond 112 could have unexpected positions in the periodical table of elements.”

Vanderbilt Professor of Physics A. V. Ramayya was also a member of the discovery team.

Jun-08-16  YouRang: <morfishine: <YouRang> If it wins, its a solution

Thats Rule #1 for analyzing >

Well, some might think I should have applied the "rule" (from Tal I believe): <If you find a good move, look for a better one>.

However, that rule is overrated if the "good move" that you found is clearly winning. This is especially true if you're short on time.

(Technically, I was short on time because I was tired out from spending so much time on the non-better solution).

Premium Chessgames Member
  beatgiant: <YouRang> I always thought <If you find a good move, look for a better one> was from Lasker's Manual of Chess, but wikipedia gives an earlier citation by William Wayte, in any case it is much older than Tal.
Premium Chessgames Member
  Sally Simpson: Tarrasch embellished it with the 'sit on your hands' bit.

My thinking is if you see a bad move look for an even worse one then play the original one knowing it's not the worse move on the board.

Jun-08-16  YouRang: It appears that we now know just one thing for sure: The quote that I attributed to Tal did not originate from Tal.

I think it best to just call it a case of unintentional plagiarism on Tal's part, and leave it at that.

In an effort to redeem Tal's reputation, I'll offer a quote that he actually did compose:

<You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.>

Now, if we combine the ideas behind these two quotes, we may end up with something like:

<If you've taken your opponent into a dark forest where 2+2=5 and the path out is only wide enough for one, then look even deeper for a darker forest where 2+2=7...>

Jun-08-16  CHESSTTCAMPS: Korchnoi has a knight for three pawns in this endgame position, but appears to be in the process of losing a piece with the attacked knight forced to give up its defense of the bishop. No worries though - the remaining pieces work together perfectly.

38... Nc4+! forces mate:

A.39.Kxd3 Rf2 40.Rg7+ Kh4 41.(any) Rd2#

B.39.Kc1/d1/e1 Rf1#

A less accurate, but pleasing alternative is 38... Rf2+ 39.Kc1 (Ke3 Re2#) Nc4 40.Rf7 Rc2+ 41.Kb1 (Kd1 Ne3+ forces mate) Rxc3+! 42.Ka1/a2 Ra3#!

Premium Chessgames Member
  al wazir: <Longview: Vanderbilt physicist Joe Hamilton played a key role in the discovery of element 117, a new super-heavy element that has been created and identified by an international scientific team.>

That is just about the farthest off-topic of any <CG> post I've ever seen. I can't see *any* relevance to anything on this page, unless you, <Longview>, happen to be Joseph Hamilton.

By the way, "tennesine" is a lousy choice for a name, because, like all the superheavy elements except 119, element 117 is a metal (despite being in the same group as fluorine, chlorine, etc.), and by convention newly discovered metals are given names ending in -ium.

Premium Chessgames Member
  Sally Simpson: Hi al wazir,

I thought it was an odd post too but a perfectly logical response to Chris Owens's previous post. Infact to me it is a Chris Owen post with paragraphs.

Have to agree I don't like the name "tennesine" but have stored it for future use in my weekly Scrabble game with Bert at the Ex-Serviceman's Club.

Now to link this back to chess.

"tennesine" - a newly discovered metal element.

Korchnoi was often described as having nerves of steele.

Jun-09-16  sachman19: never take a piece first
Jun-15-16  waustad: <al wazir> I know, but it was close enough to get me thinking.
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