ChessBase Magazine 168.pdf

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EDITORIAL
Analysis tool Let‘s Check
Working with engines is nowadays part of the
basic knowledge required for a chess player. But
how can one really squeeze out the maximum
for one’s preparation for and post mortem of
a game? One of the tools is
Let’s Check,
now
almost 4 years old and still slightly under-esti-
mated by many. Here is how it works. Users all
over the world analyse positions, the results are
taken into the “LiveBook”, with deeper analyses
replacing those which were generated rapidly;
only the three best results are shown. This hap-
pens automatically and in the background.
During top games which are broadcast on play-
chess.com, one can have live access to the latest
“Let’s Check” results; I no longer need to look at
my own engine. In the subsequent days most of
the positions are submitted to even longer anal-
yses so that the quality of the analysis continues
to rise. Every user of Fritz 13/14 or any new
ChessBase engine has access to these results. So
they save time and also you are not obliged to
have the most up-to-date computer.
A special titbit is to be found in the game
Navara-Wojtaszek, Biel 2015 (annotated on
the DVD by Igor Stohl, Navara’s second).
Navara’s king march will go down in the his-
tory of chess. The evaluations lay around 0.0,
that means everything ok, a draw is the prob-
able result. But 12 days later the evaluation
of
24...¥d3
suddenly cropped up as -1.64 in
Let‘s Check. The user
calvinahobbs
had set his
engine “Deep Fritz 14” to analyse to a search
depth of 33 (see cover). Just two days previ-
ously the evaluation had been 0.0, because his
engine had “only” reached depth 29. A check
on the move, or “delving into” the variations,
rapidly proved that White is lost.
First and foremost Let’s Check is an enormous
store of knowledge with evaluations of posi-
tions which have already been played. You can,
for example, look at any WCh game and you
will find for every move analyses going to enor-
mous depths. Even less well known classical
games have been extremely well analysed.
But Let’s Check is even more. In the field of
openings too, thousands of analyses of
posi-
tions which have not yet been played
are
stored.
On page 10 you will find the description of the
openings article by Milos Pavlovic. In it the fol-
lowing position crops up.
Pavlovic analyses the move exclusively played
in practice 7.¤xd4. In Let’s Check, however, the
first move is
7.¥f4.
The variation
7...e5
8.¤xe5
g5 is then defused with 9.e3
¤e6
10.¤xf7!.
Let’s Check prefers
7...¤e7
8.¤xd4 cxd4 9.¤b5
e5 10.¤d6+
¢f8
11.£b3!
¤f5
12.¤xf5 gxf5
13.¥d2. Whether White really has a slight
plus here still requires to be proved. But for
the important moves a search depth of over
20 is standard, sometimes it is greater than 30.
Moves such as 7.¥f4 are well suited to being
used as a surprise for one game. In this way you
can check your own repertoire with Let’s Check
and systematically search for innovations.
Your Rainer Knaak
ChessBase Magazine #168 | 3
ChEssbAsE MAgAzInE
COnTEnTs Of ThE DVD
TOP TOURnAMEnTs
Biel:
The traditional tournament in Biel came
down to a battle between three players, Navara,
Wojtaszek and Vachier-Lagrave. The Czech began
with 3 out of 4, one of which was his own immor-
tal game with a king march to h8. In the second
flight of games Wojtaszek took the lead at first, but
the best final sprint was that of Vachier-Lagrave.
Both the French and the Polish players have
each annotated a game for us. Other commen-
tary has been provided by Ftacnik, Illingworth,
Krasenkow, Marin, Mokal, Pavlovic, Roiz, Shah,
Stohl, Szabo and Wagner. In addition you can also
find on the DVD ten “Games of the day” by Dan-
iel King, Rustam Kasimdzhanov and even Maxime
Vachier-Lagrave himself.
Sinquefield-Cup:
The second tournament in the
“Grand Chess Tour” was even stronger. Once again
Magnus Carlsen had a miserable start, with Veselin
Topalov again being the spoilsport. The latter’s
early lead did not last. Levon Aronian had started
with a magnificent win against Caruana and also
continued to play strongly. Undefeated and with
three victories he won the tournament with a lead
of one point. On the DVD you will find annota-
tions by Illingworth, Krasenkow, Marin, Mokal,
Pavlovic, Roiz, Stohl, Szabo and Wagner. On top of
that all nine daily roundups by Daniel King have
been included in the report on the DVD.
Other tournaments:
The
Russian Champion-
ship
was once more super-strong. For the first
time Evgeny Tomashevsky was able to write his
name into the list of winners. The new champion
has annotated for us his game against Bukavshin,
providing extensive notes. During this time period
three high-class matches were taking place. In his
home town of Szeged Peter Leko had to bow to
the Chinese player Li Chao (2:4). On the other
hand, Shahkriyar Mamedyarov lived up to his
role as favourite and defeated Markus Ragger in
Vienna by 3.5:2.5. Previously in Wenzhou Ding
Liren had won against Boris Gelfand by 3:1. Other
players have annotated their games from vari-
ous events: including Adhiban, Edouard, Gupta,
Postny, Sutovsky, Tiviakov and Wagner.
OPEnIngs
(see also booklet, from p. 8)
Karolyi:
Reti Opening
Stohl:
English 1.c4 e5 2.g3
Pavlovic:
English Symmetrical Variation
Marin:
Owen Defence
Schipkov:
1.d4 d6 2.Nf3 Bg4 3.c4 Nd7
Schandorff:
Caro-Kann Advance Variation
In svidler-Jobava, Tbi-
lisi 2015, the georgian
played the surprise 6...
f6. Lars schandorff
has investigated the
idea
Krasenkow:
Sicilian Rossolimo 3...e6
Berg:
French Winawer 4.Ne2
Ris:
Scotch 5.Nxc6 bxc6
Illingworth:
Ruy Lopez Anti-Berlin 4.d3 d6
Max Illingworth relies
on numerous games by
Aleksej Aleksandrov
(Photo) in his exami-
nation of 4...d6
Havasi:
Queen’s Gambit ...Bf5
Postny:
Queen’s Gambit Ragosin
Szabo:
King’s Indian Fianchetto
Kuzmin:
King’s Indian Classical 9.Qc2
Pavel Eljanov (Pho-
to) has made known
the rare 9.Qc2 in the
Classical King’s Indian.
Alexey Kuzmin explains
the ideas
4 | ChessBase Magazine #168
OCTObER/nOVEMbER
bOOKLET
DVD COLUMns
Williams: Move by Move
This time Simon Williams has chosen the recent
game Aronian-Caruana (Saint Louis 2015) for
training. In our interactive video format you have
the opportunity to find the correct moves.
Rogozenco: The Classic
In the Classic video the German federal trainer
Dorian Rogozenco shows us the unusual game
Paulsen-Morphy, New York 1857.
Marin: Strategy – Against the minority attack
In his column Mihail Marin looks into minority
attacks, but does so from the viewpoint of Black.
The article begins with a video in interactive
format. He has also added a section in which the
student is tested with numerous classical training
questions.
Reeh: Tactics – “Capture – but correctly!”
Oliver Reeh’s article contains 27 games studded
with numerous training questions and an intro-
ductory text with links to all the games. In addi-
tion to that our tactics expert has recorded two of
his favourites as a video in interactive format.
Müller: Endgames – “Rook against pawn”
Karsten Müller’s column contains two introduc-
tory texts, 26 annotated endgames, many training
questions and five classical videos. In addition the
endgames expert from Hamburg has recorded two
endgames in interactive format.
Knaak: The Opening Trap
Rainer Knaak’s opening trap (including a Fritz-
trainer video) contains five topical traps.
Openings videos
(see also p. 25)
Tiviakov: Queen’s Indian 4.g3 Bb4+
Mihail Marin: Classical King’s Indian
Ris: Reti Opening 2.g3 g6 3.c4 dxc4
Editorial
Contents
Top-tournaments
Biel, Sinquefield Cup
3
4-5
6-7
Clap on the shoulder – Rex sinquefield
congratulates Aronian after his win over nakamura
Openings
Introduction to the DVD articles
Impressum
Tactics
Nine combinations to solve
Nicholas Pert:
ChessBase author introduced
8-21
12
22
23
service
New products
with videos of the DVDs by Breuti-
gam, Gormally, Williams.
Complete booklet
in PDF format
Overview
of previous openings articles
Overview
of previous video openings articles
nicholas Pert is still a
relatively new Chessbase
author, but has created
for himself a large fan-
base with several DVDs
Endgames
Nine endgame exercises to solve
Openings videos introduced
24
25
ChessBase Magazine #168 | 5
TOP TOURnAMEnTs
bIEL: hAT-TRICK fOR “MVL”
Good things come in threes! Maxime Vachier-
Lagrave (“MVL”) obviously feels good at the
Chess Festival in Biel. The French player has
taken part every year since 2009. This year he
was not the Elo favourite at the start, but never-
ations of the Grünfeld Defence with the early
4.¥f4 followed by 7.c4-c5. His plan of forc-
ing the French player into unusual structures
worked. Wojtaszek shows in the analysis of the
game on the DVD that in the transition to the
middlegame (14...¥h6) his opponent made
the decisive strategic mistake, So, thanks to
having free play on the queenside, the Polish
player decided the game in his favour and was
the first to lead the field. In the penultimate
round against Navara, MVL bet everything on
a single card with a pawn sacrifice and defeated
the Czech with an impressive attack. Before the
final round MVL and Wojtaszek were in front,
equal on points. The Pole first of all reached a
winning position against Navara, but then lost
the thread – a draw and thus the way was open
With three wins in the last three rounds Vachier-
Lagrave put the opposition in its place
theless he managed to win the GM tournament
for the third year in succession after 2013 and
2014.
In good Biel tradition the spectators were again
treated to a lot of hotly contested, sometimes
even sensational games (see the editorial) and
tension till the very last round. After six out of
ten rounds MVL, David Navara and Radoslav
Wojtaszek were leading the pack with +1 each
and struggled for victory in the return rounds.
Wojtaszek made a start with his victory over
MVL. Anand’s second avoided the main vari-
for MVL! Against the indisposed Rapport he
required only a clean win on technique to take
victory in the tournament. The diagram above
shows the critical moment: in typical fashion
Rapport sacrificed a pawn with 15...d5 (fol-
lowed by 16.exd5
¥xh3
17.¥xe5
¦xe5
18.¥xh3
a6 19.¤bc3), but Black does not get sufficient
compensation. MVL annotates the game on the
DVD and explains to you how he won it.
6 | ChessBase Magazine #168

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