FIDE Surveys – Alexey Kuzmin

1

Alexey Kuzmin:

Training of calculation II.

Time to time we meet such difficult
positions where it is impossible to give
preference to any “candidate move” basing
on the variants calculation, even having
enough time for reflection. In similar
situation an intuition begins to play a
bigger, even decisive role.
The following example is an unique by its
complexity position where nearly ten of
candidate moves are real pretenders to the
title of “The best move”!
To use the material in training purposes,
the variants analyze is divided to thirteen
tests-exercises.

Grischuk A. : Morozevich A.
Dagomys 2004

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 a6 5.Nf3
b5 6.b3 Bf5 7.Ne5 h6 8.g4 Bh7 9.Bg2 e6
10.0–0 Bd6 11.Bb2 0–0 12.Rc1 Ra7 13.c5
Bc7 14.Ne2 a5 15.f3 Nfd7 16.f4 f6 17.Nd3
Na6 18.a3 b4 19.a4 Re8 20.Qd2 Bb8
21.Ng3 e5 22.f5 Kh8 23.e4 dxe4 24.Nxe4
exd4 25.Bxd4 Bg8

XIIIIIIIIY
9-vl-wqr+lmk0
9tr-+n+-zp-0
9n+p+-zp-zp0
9zp-zP-+P+-0
9Pzp-vLN+P+0
9+P+N+-+-0
9-+-wQ-+LzP0
9+-tR-+RmK-0
xiiiiiiiiy

A range of interesting events has already
happened, but we haven’t purposely
stopped on them, striving for a critical
position, which analyzing is the subject of
this article.

EXERCISE N1: Evaluate. Determine all
the moves-candidates. Make a choice
based on your intuition.

White has an evident space advantage;
moreover there are some weak squares in
Black camp: g6, e6 and d6 which is
especially important as the White knight is
ready to penetrate in. In the same time one
mustn’t underestimate opponent’s
resources. Pawn b3 is attacked, both
bishops and a rook of Black are finely
mobilized although placed on the 8

th

line,

and its second rook can be quickly
transferred on the 7

th

rank. Even the brief

analyzes shows that the keys question is
the possibility to realize the penetration on
d6. Understandable that immediate 26.Nd6
is not good because of 26...Ndxc5! with a
winning position. Consequently the
penetration is to be prepared. The range of
White possibilities is so wide that to
determine all the moves-candidates is far
to be easy. They can be divided into
following groups:

o

“Defensive”:

1) 26.Qc2, 2) 26.Qb2, 3) 26.Qd1.
o

“Attacking”:

4) 26.Nf4, 5) 26.h4.
o

“Preparing”:

6) 26.Bf2 , 7) 26.Rfe1
o

“A brake-through”:

8) 26.g5.

So, let’s start to analyze!

White has three possibilities to defense the
pawn b3: 26.Qc2, 26.Qb2 and 26.Qd1:

1) 26.Qc2
Logical, “human” move, but it doesn’t
make special problems and doesn’t
promise an advantage … To adopt the
second rook into the play, Black has to
make free the 7

th

rank, so two moves seem

to be natural:
26...Ne5
More complicated but acceptable 26...Nf8
27.Bf2 (27.Nd6 Rae7! 28.Bxc6 Bxd6
29.cxd6 Qxd6) 27...Rae7 28.Rfe1 Nd7
29.Rcd1 Qc7 30.Nd6 Rxe1+ 31.Nxe1

FIDE Surveys – Alexey Kuzmin

2

Naxc5! 32.Nxe8 Qxh2+ 33.Kf1 Bxb3
34.Qe2 Be5©.
27.Nd6 Nxg4 28.Bxc6 Ree7

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9+-tR-+RmK-0
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EXERCISE N2: Evaluate consequences
of the move 29.Nf4.

29.Nf4 leads to the draw: 29... Nxc5!
30.Bxc5 Bxd6 31.Bxd6 Qxd6 32.Ng6+
Kh7 33.Nf8+=.
White can hardly count on something more
also after 29.Rfd1 Bxd6 30.cxd6 Qxd6
31.Bxa7 Bxb3 32.Qxb3 Qxh2+ 33.Kf1
Qe2+=.

2) 26.Qb2?!
This move’s disadvantage consists in the
fact that the queen leaves unprotected the
knight d3. It allows Black to force
profitable changes and when activating
pieces to get an advantage.
26...Ne5 27.Nf4
27.Nxe5 Bxe5 28.Bxe5 Rxe5.

XIIIIIIIIY
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9Pzp-vLNsNP+0
9+P+-+-+-0
9-wQ-+-+LzP0
9+-tR-+RmK-0
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EXERCISE N3: How to continue with
Black?

27...Rd7!
Evidently weaker 27...Bf7? 28.Nd6 or
27...Nxg4?! 28.Nd6.

28.Nd6 Nxc5! 29.Bxe5 Rxe5 30.Ng6+
Kh7 31.Nxe5 Rxd6 32.Nxc6 Rxc6
33.Bxc6 Nxb3!

3) 26.Qd1
Between “defensive” moves this move
demands Black to find not so evident
replay to achieve the position with equal
chances.

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9Pzp-vLN+P+0
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9-+-+-+LzP0
9+-tRQ+RmK-0
xiiiiiiiiy

EXERCISE N4: How to continue with
Black?

26...Nb6!
Weaker is 26...Bd5 27.Re1 (27.Nd6
Ndxc5 28.Nxe8 Bxb3 29.Nxc5 Bxd1
30.Ne6 Qxe8 31.Bxc6) 27...Nf8 28.Bf2
Rae7 29.Nd6).
27.Nd6
After 27.Bxf6 gxf6 28.cxb6 Qxb6+ 29.Rf2
Qd4 White has to speed up the draw:
30.Qd2 Rxe4 31.Bxe4 Qxe4 32.Qxh6+=.
27...Nxc5 28.Bxc5 Bxd6 29.Bxc6 Rf8,
with chances for both sides.

We have considered two following
possibilities 26.Nf4 and 26.h4 as
“Attacking”

4) 26.Nf4
Keep equality, but doesn’t make problems.
26...Ne5
More faithful and natural. More risky looks
26...Bxb3 27.Rfe1 Bxf4 (27...Kh7 28.Ne6
Bxe6 29.fxe6 Rxe6 30.Ng5+ hxg5
31.Rxe6) 28.Qxf4 Bxa4 29.Nd6 Rf8
30.Qe3©.

FIDE Surveys – Alexey Kuzmin

3

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9+P+-+-+-0
9-+-wQ-+LzP0
9+-tR-+RmK-0
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EXERCISE N5: Evaluate the position.
How to continue with White?

White has no reasons to count on
something more than the equality.
27.Nd6
Leads to the draw. In the end game after
27.Bxe5?! Qxd2 28.Nxd2 Bxe5 29.Bxc6
Bxf4 30.Rxf4 Rc8 Black position is a bit
better.
27...Nxc5
27...Rd7 28.Bxe5 Nxc5 29.Nxe8 Rxd2
30.Ng6+=.
28.Nxe8
Or 28.Bxe5 Nxb3 29.Nxe8=.
28...Nxb3 29.Bxe5 Nxd2 30.Ng6+=

5) 26.h4?! The second “attacking”
possibility is inaccurate.

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9-+-wQ-+L+0
9+-tR-+RmK-0
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EXERCISE N6: Determine the moves-
candidates and calculate variants.

a) 26...Nf8?! 27.Nd6! Bxd6 28.cxd6 Rd7
29.g5 Rxd6 30.gxf6 Rxd4 31.fxg7+ Kxg7
32.Rxc6± is bad for Black.
b) 26...Ne5?! 27.Bxe5! fxe5 (27...Bxe5
28.Nxe5 fxe5 29.Nd6±) 28.f6 Qd4+
29.Kh1 Bd5 30.fxg7+ Kxg7 31.Rf6±.

c) 26...Bxb3
Leads to positions with both-sides
chances. 27.g5 Bd5 (After 27...Ne5
28.Bxe5 fxe5 29.f6!?© Black position is
quite dangerous. For example: 29...Rg8
(29...Qd4+ 30.Kh1 Rd8 31.Qe2! Qxd3?
32.Qh5+-) 30.g6 Qd4+ 31.Rf2 Bd5 32.Nd6
Bxd6 33.cxd6 Bxg2 34.Kxg2 Rd7 35.Qe2
(35.fxg7+ Kxg7 36.Qe2ѓ) ) 28.gxf6 Nxf6
(The position continues to be absolutely
unclear, after 28...Rxe4 29.Bxe4 Bxe4
30.Nf2, but the balance is not broken,
which is approved for instance by the
following variant 30...Bd5 31.fxg7+ Kh7
32.f6! Nxf6 33.Ng4 Bh2+ 34.Kxh2 Nxg4+
35.Kg3 Qb8+ 36.Kxg4 Be6+ 37.Kf3 Rf7+
38.Kg2 Bd5+ 39.Kh3 Be6+ 40.Kg2=)
29.Nxf6 Bxg2 30.Nxe8 Qxd4+ 31.Kxg2
Qg4+ 32.Kh1 Qxh4+ 33.Kg1 Qg3+
34.Kh1.
d) 26...Rxe4!
The best move. To sacrifice the exchange
provides Black with an evident advantage.
27.Bxe4 Ndxc5! 28.Nxc5 (28.Bxc5 Nxc5
29.Ne5!? Rd7! 30.Nxd7 Nxe4 31.Qe3
Qxd7 32.Qxe4 Qa7+ 33.Rf2 Bg3)
28...Nxc5 29.Qe3 (29.Rxc5 Rd7) 29...Qd6.

Two following continuations 26.Bf2 and
26.Rfe1 we have called “preparing”:

6) 26.Bf2
Bishop, unprotected on d4, suggests about
its retreat. Moreover after penetration and
change on d6 it can defense the pawn d6
transferring on the diagonal h2-b8. 26.Be3
is hardly to be reasonable with this aim.
The idea with sacrifice on h6 looks too
fantastic, and bishop position on e3 is
unsafe.
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FIDE Surveys – Alexey Kuzmin

4

EXERCISE N7: Determine the moves-
candidates and calculate variants.

As 26...Ne5?! allows White to penetrate
easily on d6 - 27.Nxe5 Bxe5 28.Nd6,
Black has in its disposal three logical
possibilities: a) 26...Bd5, b) 26... Rxe4
and c) 26...Bxb3.

a) 26...Bd5?!
It’s the less successful move out of three
continuations. With quiet events
development White can count on
advantage due to its space advantage.
27.Rfe1! (27.Nd6?! Ndxc5) 27...Re7
(27...Ne5?! 28.Nxe5 Bxe5 29.Nd6 Bxg2
30.Kxg2±; 27...Bxe4 28.Rxe4 Rxe4
29.Bxe4 Ne5 30.Qe2 Rd7 31.Nxe5 Bxe5)
28.h3.

b) 26...Rxe4!?
With sacrifice the exchange Black gets rid
of a dangerous knight and, taking the pawn
b3, gets quite enough equivalent. 27.Bxe4
Bxb3 28.Nb2 (28.Nf4 Bxf4 29.Qxf4 Ne5)
28...Qc8! Black has a compensation,
sufficient enough for equality: 29.Qe3 Bf7
30.Nd3 Ne5 31.Nxe5 Bxe5 32.Qf3 b3.

c) 26...Bxb3!
Objectively the best move. It allows Black
to fight for something more than equality.
27.Nd6
After 27.Nf4? White has no sufficient
compensation: 27...Ne5 28.Nd6 Bxd6
29.cxd6 c5.
27...Ndxc5! 28.Nxc5
The only acceptable move. Bad is
28.Nxe8? Rd7! (28...Nxd3 29.Rxc6 Bf4!)
29.Bxc6 Rxd3 30.Qe2 Rh3 or 28.Bxc5?
Rae7! (28...Rd7) 29.Nxe8 Nxc5 30.Rxc5
Ba7 31.Kh1 (31.Rf2 Rd7) 31...Bxc5
32.Nxf6 gxf6 33.Qxh6+ Rh7 and Black
position is close to be won.
28...Nxc5 29.Bxc5 Rd7

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EXERCISE N8: Calculate variants after
c1) 30.Qb2, c2) 30.Rfd1 and c3) 30.Bxc6
and make your choice.

First two continuations are mistaken.

c1) 30.Qb2? Bxd6 31.Bxd6 (31.Qxb3?
Bxc5+ 32.Rxc5 Qb6 33.Rfc1 Re5–+)
31...Bxa4 (Three pawns together with the
possession of all open files evidently
prevail. Wherever White bishop retreats,
its position is difficult.) 32.Bf4 (or 32.Bc5
Rd2 33.Qa1 Bb5 (33...Ree2 34.Rf2)
34.Rf2 b3 or 32.Bg3 Rd2 33.Qa1 Bb5)
32...Bb5 33.Rfe1 (33.Bxc6 Re2–+)
33...Rxe1+ 34.Rxe1 Rd1 35.Kf2 Rxe1
36.Kxe1 Qe7+ 37.Kf2 a4–+.

c2) 30.Rfd1? Bxd1 31.Rxd1 Bxd6
32.Bxd6 Rxd6 33.Qxd6 Re1+!–+;

c3) 30.Bxc6! Rxd6 31.Bxd6 Bxd6
Open position of White king and strong
passed-pawn allow to give preference to
Black’s position.
32.Kg2
32.Rf2?! Re5.
32...Bc7 33.Qxd8 Rxd8

So, complications after 26.Bf2 are
profitable rather for Black.

FIDE Surveys – Alexey Kuzmin

5

The second “preparing” move is stronger.
7) 26.Rfe1

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EXERCISE N9: Determine the moves-
candidates and calculate variations.

Black has to play accurate to keep equality.
26...Nf8
26...Bxb3?! is a risky move: 27.Nd6 Bxd6
28.cxd6 c5 29.Ba1! (29.Bf2 Bxa4!
30.Rxe8+ Qxe8 31.Ra1 (31.Re1 Qb8)
31...Bb5 32.Rxa5 Qb8 33.Nxb4 cxb4
34.Rxb5 Qxb5 35.Bxa7 b3 36.Bd4 Nac5
and Black is to hold out) 29...Rxe1+
30.Rxe1 Nf8 (30...c4?! 31.Bd4±) 31.Nf4
Rd7 32.Qe3.
Passively is 26…Re7?! White has got
several continuations holding an initiative:
27.Bf2 Bd5 28.h4 or 27.Re3!? Bd5
(27...Bxb3 28.g5) 28.Qe2 Bxb3 29.g5 or
27.h4!?.
27.Nd6 Rxe1+!
Interesting variants appear after an
objectively unsuccessful move 27...Rae7?

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EXERCISE N10: Estimate the Queen
sacrifice 28.Qxh6.

The queen sacrifice seems to win:
28.Qxh6+?! gxh6 29.Bxf6+ Kh7 30.Nxe8.

Actually after 30...Rxe8 31.Bxd8 Rxd8
32.Ne5 Bxe5 33.Rxe5 Bxb3 34.Bxc6±
Black is unlikely to escape. Also lose
30...Be6 31.Bxe7 Qxe7 32.fxe6 Qxe8
(32...Nxe6 33.Be4+ Kh8 34.Bf5+-)
33.e7+-. But Black finds out a brilliant
saving resource.

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30…Be5!! 31.Bxe7 (Also bad is 31.Bxe5
Rxe8 32.Bd6 Bxb3–+ and 31.Rxe5 Qd4+
32.Kh1 Rxe5 33.Nxe5 Qe3 34.Rf1 Nxc5 or
31.Nxe5 Qd4+ 32.Kf1 Rxe8) 31...Qxd3
32.Nf6+ (32.Rcd1? Qc3) 32...Kh8! and
Black escapes: 33.Rcd1 Qxb3 34.Rd8 Qc3
35.Rxe5 Qxe5 36.Rxf8 Qd4+.
Instead of a spectacular queen sacrifice
stronger is 28.Bxc6! Bxd6 29.Bxe8 Rxe1+
30.Rxe1 (Also possible is 30.Qxe1)
30...Nxc5 31.Nxc5 Bxc5 32.Re4 Bxb3
33.Qe3 Bxd4 34.Rxd4± with an evident
advantage.
Let’s came back to 27…Rxe1.
28.Rxe1 Bxd6 29.cxd6 Rd7

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EXERCISE N11: Determine the moves-
candidates and calculate variants.

a) 30.Bxc6?! – is mistaken and put White
on the brink of serious problems: 30...Rxd6
31.Re8 Qc7!

FIDE Surveys – Alexey Kuzmin

6

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9+-+-+-mK-0
xiiiiiiiiy

EXERCISE N12: Could White escape?
To an escape leads 32.Qe3 Qxc6 33.Rxf8
Qd7 (33...Qd5 34.Bxf6!) 34.Bxf6! gxf6
35.Re8! Qg7 36.Nf4 Qxg4+ 37.Kf2 Qxf5
38.Rxg8+=.

b) 30.Re4 is a logical, position reinforcing
maneuver. 30...Bd5 (White gets a good
compensation after 30...Rxd6 31.Qe3 Nc7
32.Nc5©; or 30...Bxb3 31.Qe3©) 31.Nc5
Nxc5 (An ending with an extra pawn
31...Bxe4 32.Nxe4 Rxd6 33.Nxd6 Qxd6
34.Be3! Qxd2 35.Bxd2 Nc5 36.Be3 Nxb3
37.Bxc6± ... and Black is unlikely to
escape.) 32.Bxc5 Bxe4 33.Bxe4©. White
has got a sufficient compensation.

c) After 30.Qe3 Rxd6 31.Bb6 Qb8 32.Nf4
Nd7!= (Black is holding an equality. More
complicated is 32...Bxb3 33.Bf1 Bf7
34.Ba7 Qc8 35.Bxa6 Qxa6 36.Qe7) 33.Ba7
(33.Bxa5 Ndc5!) 33...Qd8 34.Ng6+ Kh7
35.Qe8 Qxe8 36.Rxe8 Nac5 37.Rd8 Rd1+
38.Kf2 Rd2+=.

d) 30.Ne5!? is a very interesting idea.
30...fxe5 31.Bxe5

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d1) After 31...Nh7 32.Qxh6 Bxb3 33.Bd4
c5 34.Qg6 White gets a full compensation.

d2) 31…Bxb3 can lead to draw: 32.Qd4 (It
is not good either 32.Qb2?! Bd5 33.Bxg7+
Kg8 or 32.Qxh6+?! Kg8) 32...Qh4 33.Bg3
Qf6 34.Be5 Qh4 35.Bg3=.

d3) 31...Kh7 32.Qd4 (32.Re3 Nc5 33.Rh3
Nxb3 34.Qf4©) 32...c5 33.Qd3 c4 34.bxc4
Qb6+ 35.Kh1©. The position is very
complicated and rather approximately
equal, but practically it is easier to be
played with White ... 35...Qc5 (35...Nc5
36.Qe3 Rxd6 37.g5 Bf7 38.Bd4! Rxd4
39.Qxd4 Nxa4 40.Qxb6 Nxb6 41.g6+
Nxg6 42.fxg6+ Bxg6 43.c5±) 36.g5 Bxc4
37.g6+ Kg8 38.Qe4©.

The last eighth move-candidate is an
immediate brake-through:

8) 26.g5! hxg5

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EXERCISE N13: How to continue with
White ?

To nothing good leads either 27.h4?! gxh4
or 27.Rce1?! Bxb3 28.Re3 Kg8 29.Rfe1
Bf7.
27.Qd1!!
Only in accordance with this move the
realized pawn sacrifice finds sense. The
move 26.g5 is not so difficult to be made
out in connection with the idea to open the
h-line, but in context of this plan it is
erroneous. But to understand that, when
sacrifying the pawn, White has simply
reinforced the positional idea to penetrate
on d6 is very difficult! It’s impossible to

FIDE Surveys – Alexey Kuzmin

7

approach to the acceptance of the similar
decision by means of variants searching,
but by intuition only!
27...Bf7!
It’s the best move, Black had many other
moves:
a) 27...Ne5?? 28.Bxe5 Bxe5 29.Nxe5+-;
b) 27...Nb6?? 28.Qh5+ Bh7 29.Nxf6!+-;
c) 27...Rxe4? 28.Qh5+ Bh7 29.Bxe4 Nf8
30.Bf2+-;
d) 27...Bd5 28.Nd6 Bxd6 29.cxd6 Bxg2
30.Qh5+ Kg8 31.Rfe1! Rxe1+ (31...Ra8
32.Kxg2 c5 33.Bf2) 32.Rxe1 Nf8 33.Bxa7
Qxd6 34.Kxg2 Qxd3 35.Qf3 Qd7
36.Bb6±;
e) 27...Nf8 28.Nd6 Ree7 29.h4 Nxc5
30.Bxc5 Bxd6 31.Bxa7 Rxa7 32.hxg5 fxg5
33.Rxc6±;
f) 27...Bh7 28.Qh5! Ne5 29.Rcd1! Qxd4+
(29...g6 30.Bxe5!±) 30.Ndf2 Qd8
(30...Nf3+ 31.Bxf3 Qe5 32.Ng4 Qe7
33.Nd6±) 31.Rxd8 Rxd8 32.h4 gxh4
33.Nh3±.
28.Nd6! Bxd6 29.cxd6 c5 30.Bf2
White has a fine compensation. It is
difficult for Black to activate his pieces, so
he is forced to wait for events
development.
30...Kg8
30...Ne5?! 31.Nxe5 Rxe5 32.Qd3 Qb6
33.Rfe1±; 30...Qb6?! 31.Bd5!±; 30...Qb8
31.Bg3 Re3 32.Rf2©.
31.Re1
Other ways are available: 31.h4 Qb6
32.hxg5 fxg5 33.Nb2 Ne5; 31.Bg3 Qb6
32.Kh1©; 31.Qc2 Qb6 32.Rfd1©.
31...Rxe1+ 32.Bxe1! Qb6 33.Bg3 Bxb3
34.Qxb3+ c4+ 35.Bf2 cxb3 36.Bd5+ Kh7
37.Bxb6 Nxb6 38.Bxb3.

In conclusion of, one should say that
Grischuk chose 26.Bf2 in his game, but it
was played during a team tournament and
in that moment the match and the game
were qualified as DRAW by both teams
captains’ decision …