% BOOKTITLE = Original Repertoire: The Grünfeld Defence (sample)
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "About this Publication"]
[Black "?"]
[Result "*"]
[Annotator "Nigel Davies"]
[PlyCount "6"]
[SourceTitle "OR: Grünfeld Defence"]
[Source "Everyman Chess"]
[SourceDate "2021.01.11"]

{The Grünfeld Defence is a combative reply to} 1. d4 {which has been favoured
by many world champions including those two legends of the game, Bobby Fischer
and Garry Kasparov.} Nf6 2. c4 g6 3. Nc3 d5 {is an opening in the hypermodern
style, in that Black generally allows White to build a strong centre early on
in the expectation of being able to undermine it in the middlegame play.
'Opening Repertoire: The Grünfeld Defence' cuts through the dense theory that
surrounds this opening and establishes a straightforward repertoire based
around consistent strategies and concepts. It has all the information
necessary to enable the reader to begin playing the Grünfeld with confidence.
There are also 'Grünfeld-type' suggestions to counter White systems based on
the English and Réti openings. --- In 'Opening Repertoire: The Grünfeld
Defence', Nigel Davies guides the reader through the complexities of the
Grünfeld and carves out a repertoire for Black. He examines all aspects of
this highly complex opening and provides the reader with well-researched,
fresh, and innovative analysis. Each annotated game has valuable lessons on
how to play the opening and contains instructive commentary on typical
middlegame plans.} (3... Z0 {Nigel Davies is an International Grandmaster and
respected coach. He is the author of numerous books and DVDs on the game and
is known for the clarity of his explanations.}) *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Introduction"]
[Black "?"]
[Result "*"]
[Annotator "Nigel Davies"]
[PlyCount "12"]
[SourceTitle "OR: Grünfeld Defence"]
[Source "Everyman Chess"]
[SourceDate "2021.01.11"]

{From Black's counterattacking options against 1 d4, the Grünfeld Defence is
the most reputable. This can be most easily shown by the galaxy of stars who
are playing it, contemporary exponents including Magnus Carlsen, Fabiano
Caruana, Ding Lirin, Wesley So, Levon Aronian, Alexander Grischuk, Maxime
Vachier-Lagrave, Ian Nepomniachtchi, Anish Giri, Peter Svidler, Alexander
Morozevich, Boris Gelfand, Vassily Ivanchuk, and many others. Going back in
time it can also be found in the repertoires of many world champions including
Garry Kasparov, Bobby Fischer, Vassily Smyslov, Mikhail Botvinnik, and
Alexander Alekhine, not to mention the strongest player never to become World
Champion, Viktor Korchnoi. --- What is the idea behind the Grünfeld? After} 1.
d4 Nf6 2. c4 g6 3. Nc3 {it may at first look strange to play} d5 {because
White can create a pawn centre with} 4. cxd5 Nxd5 5. e4 {. Yet this centre is
then immediately placed under attack with} Nxc3 6. bxc3 Bg7 {followed by 7...
c5, and Black can intensify this pressure with a subsequent ...Nc6. In other
lines Black's g7-bishop also proves to be the most effective minor piece on
the board, perhaps in part because White's 2 c4 made the d4-pawn just a tad
more vulnerable. --- The following famous game was hailed as the “Game of
the Century” and provides a good illustration of the Grünfeld's
counterattacking nature. Playing Black is the then 13-year-old Bobby Fischer,
White was Donald Byrne who had won the US Championship just three years
earlier (see the following game).} *

[Event "1: Rosenwald Memorial, New York"]
[Site "?"]
[Date "1956.??.??"]
[Round "?"]
[White "Byrne, D."]
[Black "Fischer, RJ."]
[Result "0-1"]
[ECO "D92"]
[Annotator "Nigel Davies"]
[PlyCount "82"]
[EventDate "1997.??.??"]
[SourceTitle "OR: Grünfeld Defence"]
[Source "Everyman Chess"]
[SourceDate "2021.01.11"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 {Fischer was evidently happy to play a King's
Indian Defence, which White could go into after e2-e4 either here or on the
next move.} 4. d4 O-O 5. Bf4 {Looking for an unusual line against the King's
Indian;} ({for example, after} 5. Bf4 d6 {, White could play} 6. e3 {. Fischer
takes the opportunity to enter a line of the Grünfeld where White has
committed himself to Bf4.}) 5... d5 6. Qb3 dxc4 7. Qxc4 c6 8. e4 Nbd7 {A
sensible move, but not a critical one.} ({Black should play} 8... b5 $1 9. Qb3
Qa5 {intending ...b5-b4. For example} 10. Bd3 Be6 11. Qd1 c5 12. d5 Bg4 13. O-O
c4 14. Bc2 Nbd7 {then sees Black develop in a harmonious and active fashion.})
9. Rd1 Nb6 10. Qc5 Bg4 11. Bg5 $2 {This loss of time has surprisingly serious
consequences.} ({After the simple} 11. Be2 {Black would struggle to find
active counterplay because of his lack of readily available pawn levers; now
the counterplay arrives solely with piece play.}) 11... Na4 $3 {A bolt from
the blue, exploiting the awkward placement of White's pieces and his uncastled
king.} 12. Qa3 ({Accepting the sacrifice is just good for Black; for example,} 
12. Nxa4 Nxe4 13. Qc1 ({or if} 13. Qxe7 {then} Qa5+ 14. b4 Qxa4 15. Qxe4 Rfe8
16. Be7 Bxf3 17. gxf3 Bf8 {wins}) 13... Qa5+ 14. Nc3 (14. Bd2 Qxa4 {leaves
Black a pawn up with an overwhelming position}) 14... Bxf3 15. gxf3 Nxg5 {
would see Black recovering the sacrificed material with a winning position.})
12... Nxc3 13. bxc3 Nxe4 14. Bxe7 Qb6 (14... Qd5 {was less spectacular but
also very strong; for example,} 15. Bxf8 Bxf8 16. Qb3 Qxb3 17. axb3 Re8 {
leaves White without any good moves.}) 15. Bc4 (15. Bxf8 {is good for Black
after} Bxf8 16. Qb3 Qxb3 (16... Nxc3 $5 {is also good}) 17. axb3 Re8 18. Be2
Nxc3 {; for example,} 19. Rd2 Bb4 20. Kf1 Nb1 21. Rc2 Bxf3 22. gxf3 Nd2+ {
is crushing.}) 15... Nxc3 $1 {This further sacrifice is overwhelming.} (15...
Bxf3 16. gxf3 Nxc3 17. Bc5 Nb5 {is also good for Black and does not require a
later queen sacrifice.}) 16. Bc5 {It usually needs cooperation by the loser to
create a masterpiece.} (16. Qxc3 {would have lost rather prosaically after}
Rae8 {. For example, after} 17. Qe3 {there follows} Qc7 18. Bxf8 Qa5+ $1 19.
Ke2 Kxf8 {, when the queen and pawn will outweigh the two rooks because
White's position is disorganized and his king also weak.}) 16... Rfe8+ 17. Kf1
Be6 $1 {This brilliant queen sacrifice is the only way.} (17... Nb5 $2 {
would have let White off the hook after} 18. Bxf7+ $1 Kh8 ({not} 18... Kxf7 {
because of} 19. Qb3+ Be6 20. Ng5+ {etc.}) 19. Bxb6 Nxa3 20. Bc5 {, when
suddenly Black is in an endgame with insufficient compensation.}) 18. Bxb6 ({
Going down in flames, but other moves do not help. For example, White cannot
play} 18. Bxe6 {as a well-known smothered mate pattern follows after} Qb5+ 19.
Kg1 Ne2+ 20. Kf1 Ng3+ 21. Kg1 Qf1+ $1 22. Rxf1 Ne2# {.}) ({Meanwhile} 18. Qxc3
{is refuted by} Qxc5 $1 19. dxc5 Bxc3 20. Bxe6 Rxe6) ({and} 18. Bd3 {is just
good for Black after} Nb5 {.}) 18... Bxc4+ 19. Kg1 Ne2+ 20. Kf1 Nxd4+ 21. Kg1 (
21. Rd3 axb6 22. Qc3 Nxf3 {wins White's queen because} 23. Qxc4 Re1# {is mate.}
) 21... Ne2+ 22. Kf1 Nc3+ 23. Kg1 axb6 {Facing catastrophic material losses
White could have saved himself the rest. Perhaps he thought the kid he was
playing might mess up.} 24. Qb4 Ra4 25. Qxb6 Nxd1 26. h3 Rxa2 27. Kh2 Nxf2 28.
Re1 Rxe1 29. Qd8+ Bf8 30. Nxe1 Bd5 31. Nf3 Ne4 32. Qb8 b5 33. h4 h5 34. Ne5 Kg7
35. Kg1 Bc5+ 36. Kf1 Ng3+ 37. Ke1 Bb4+ 38. Kd1 Bb3+ 39. Kc1 Ne2+ 40. Kb1 Nc3+
41. Kc1 Rc2# {. One factor that scares many players away from the Grünfeld is
that it has the reputation of being highly theoretical and therefore difficult
to learn and maintain. With many of the sharpest lines this is a fair
assessment, yet the Grünfeld is fundamentally sound enough to permit Black a
wide choice. This is reflected in my recommendations for Black, assuming my
target audience to be club-level players rather than Grünfeld-toting
Grandmasters who are 2700+. I have chosen high quality but low maintenance
lines in which the outcome from the opening is a typical Grünfeld middlegame
position. By doing so I hope to have simplified the lines and plans
sufficiently enough for the reader to be able to remember them. --- The way I
suggest the reader approaches this book is to read through it quickly the
first time to get an overview of the material and how the lines fit together.
After this I recommend trying the Grünfeld in some games and then referring
back to this book to check your play against what I recommend. As your
understanding grows you may want to start adding your own notes and this is
where the Everyman Chess ebook format is invaluable - just import the games
into your favourite chess database software and add your own notes and any new
games or lines that you want to incorporate. --- Nigel Davies, St. Helens, UK,
December 2020} 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "5: Russian System"]
[Black "5 Qb3 & 5 Qa4+"]
[Result "*"]
[ECO "D99"]
[Annotator "Nigel Davies"]
[PlyCount "30"]
[SourceTitle "OR: Grünfeld Defence"]
[Source "Everyman Chess"]
[SourceDate "2021.01.11"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 {The so-called Russian System
with 5 Qb3 is one of White's traditional weapons against the Grünfeld. By
initiating pressure against d5 he almost forces Black to give up the centre
with ...dxc4. After 5...dxc4 6 Qxc4 0-0 7 e4 the recommendation for Black is
the equally traditional Smyslov line with 7...Bg4 followed by ...Nfd7,
unveiling the Grünfeld bishop on g7 which then targets d4.} (5. Qa4+ {leads
to very similar play and can transpose. One independent line is} Bd7 6. Qb3
dxc4 7. Qxc4 O-O 8. Bf4 (8. e4 Bg4 {transposes back into the main line with
both sides having lost a tempo}) 8... c6 9. e4 Qa5 10. Bd2 b5 {as in
Rasmussen-Sutovsky (game 34).}) 5... dxc4 6. Qxc4 O-O 7. e4 ({White has an
important alternative in} 7. Bf4 {, after which the recommended treatment is}
c6 8. e4 Qa5 {as covered in Radjabov-Morozevich (game 35).}) 7... Bg4 {
Smyslov's line, which was one of Black's early methods of combating the
Russian System and has retained its good reputation.} 8. Be3 ({QUESTION: What
happens after} 8. Ne5 {- ? --- ANSWER: Black can meet that with} Be6 {, after
which} 9. d5 ({and} 9. Qb4 Nfd7 10. Nxd7 Nc6 {in Kulzinski-Gligoric - game 37})
9... Bc8 {is covered in Züger-Birnboim (game 36). Despite looking
superficially attractive, the problem White has is that the knight is not
stable on the e5-square.}) ({QUESTION: Is} 8. Be2 {an alternative for White,
preventing the doubling of his f-pawns? --- ANSWER: Yes it is, though Black
will not normally capture on f3 after 8 Be3. The drawback of Be2 is that after}
Nfd7 9. Be3 Nb6 {White has to play} 10. Qc5 {to defend the d-pawn, which isn't
an issue if he plays Rd1 instead of Be2. Visakh-Mareco (game 38) then featured}
e6 {to restrain the further advance of White's d-pawn. This is a plan that
will be used throughout the recommended repertoire against 5 Qb3.}) 8... Nfd7 {
QUESTION: That looks like a strange move. What's the idea? --- ANSWER: Black
is regrouping the knight to b6 where it will gain time by hitting the queen.
Moving the knight from f6 also unveils the bishop on g7 so that it can put
pressure on White's d4-pawn.} 9. Qb3 (9. Rd1 Nb6 {will normally transpose back
into the main line after 10 Qb3 e6, but White played} 10. Qc5 {in
Arakelov-Yandemirov (game 39). Black then gained time on the queen with} N8d7
11. Qb5 c6 12. Qb3 {and freed his game with} e5 {.}) 9... Nb6 10. Rd1 ({
QUESTION: Can White also bring his king to safety with} 10. O-O-O {- ? ---
ANSWER: Yes that's an alternative worth considering, when the recommended
formula is again} e6 {as in Ivanov-Shishkin (game 40). But note that White's
king will not be particularly safe on the queenside where it has only two
pawns as cover.}) ({One other alternative for White is} 10. a4 {, after which}
a5 11. d5 {was played in Furman-Timman (game 41) and now Black undermined d5
with} e6 {.}) 10... e6 {QUESTION: What's the point of this? Shouldn't Black be
using the time to attack White's centre? --- ANSWER: Before playing ...Nb8-c6
Black first restrains White's d-pawn so that he cannot easily play d4-d5.} 11.
Be2 Nc6 12. e5 ({White has a major alternative in} 12. Ng1 {, after which} Bxe2
13. Ngxe2 Qe7 14. O-O Rfd8 15. e5 Qb4 {was about equal in Shankland-Rakhmanov 
(game 42).}) 12... Ne7 13. h3 Bxf3 14. Bxf3 c6 15. O-O Qc7 {. A game of heavy
manoeuvring is in prospect, with Black emerging victorious in
Radjabov-Ivanchuk (game 43).} *

[Event "34: European Team Ch., Porto Carras"]
[Site "?"]
[Date "2011.??.??"]
[Round "?"]
[White "Rasmussen, A"]
[Black "Sutovsky, E"]
[Result "0-1"]
[ECO "D90"]
[Annotator "Nigel Davies"]
[PlyCount "72"]
[EventDate "2011.??.??"]
[SourceTitle "OR: Grünfeld Defence"]
[Source "Everyman Chess"]
[SourceDate "2021.01.11"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+ ({This leads to similar play to
} 5. Qb3 {, but with Black having the extra move} Bd7 {.}) 5... Bd7 6. Qb3 dxc4
7. Qxc4 (7. Qxb7 {is strongly met by} Nc6 {; for example,} 8. Bf4 Rb8 9. Qxc7
Qxc7 10. Bxc7 Rxb2 {recovers the pawn with the better game.}) 7... O-O 8. Bf4 {
Giving the game a novel turn.} (8. e4 Bg4 {is a direct transposition into the
5 Qb3 lines considered later.}) 8... c6 9. e4 Qa5 10. Bd2 ({As in the previous
game, White has an alternative here in} 10. b4 {, when it remains to be seen
whether Black's extra ...Bc8-d7 will make much difference. I.Sokolov-D.Howell,
London 2009, continued} Qd8 11. a4 Be6 12. Qd3 {and now Black should play} a5 (
{rather than} 12... Na6 {, as played in the game}) 13. b5 Nh5 14. Be3 cxb5 15.
axb5 (15. Nxb5 Nc6 {followed by ...Nb4 gives Black excellent counterplay})
15... Nd7 16. d5 Rc8 {is already better for Black.}) 10... b5 11. Qd3 (11. Qb3
b4 {undermines the defender of the e4-pawn and after} 12. e5 bxc3 13. Bxc3 Qc7
14. exf6 exf6 {Black gets an excellent position which is very similar to the
note to White's 9th move in the next game, Radjabov-Morozevich.}) 11... b4 12.
Nd1 c5 $1 13. d5 {Black gets an excellent position which is very similar to
the note to White's 9th move in the next game, Radjabov-Morozevich.} ({However,
Black stands well after other moves too; for example,} 13. dxc5 Rd8 14. Ne3 Be6
) ({or} 13. e5 Nd5 14. dxc5 Qxc5 {. Yet either of these would have been better
than the move played.}) 13... e6 $1 14. Ne3 ({QUESTION: Could White push on
with} 14. d6 {here? --- ANSWER: Black has a strong reply with} Bc6 15. e5 Ng4 {
, when White's centre pawns are in big trouble.}) 14... exd5 15. exd5 Re8 16.
Be2 Ng4 (16... a6 17. Nc4 Bb5 18. Be3 Bxc4 19. Qxc4 Nbd7 20. O-O Nb6 {wins a
pawn; for example,} 21. Qxc5 Qxc5 22. Bxc5 Na4 23. Be3 Nxd5 {attacks e3 and b2.
}) 17. Nc4 Qa6 18. a4 Bf5 19. Qb3 {With White's king still in the centre, it
should be no surprise that something bad now happens.} Rxe2+ $1 20. Kxe2 Nd7 {
This quiet follow-up leaves White without a good move.} 21. Ke1 ({As an
example of White's woes,} 21. Rhc1 {is strongly met by} Nde5 {; e.g.} 22. Nfxe5
Nxe5 23. Kd1 Nd3 24. Rc2 Rd8 25. d6 Nxb2+ 26. Rxb2 Bxb2 27. Nxb2 Qf1+ 28. Be1
Rxd6+ {etc.}) 21... Be4 22. h3 Bxd5 23. hxg4 Bxc4 24. Qc2 Bd3 25. Qb3 c4 $1 26.
Qxb4 Qe6+ 27. Be3 Rb8 {Bringing further pieces into the attack with gain of
tempo.} 28. Qa5 Bxb2 29. Rd1 Ba3 {Threatening 30...Bb4+.} 30. Nd4 Qxg4 31. Qg5
Bb4+ 32. Rd2 Qxg5 33. Bxg5 Ba5 {Threatening mate on b1, and in fact there's
not a whole lot White can do about this.} 34. Nb5 a6 35. Na3 Rb3 36. Be7 Rb2 {
. A dashing game by Sutovsky.} 0-1

[Event "35: Sportaccord Rapidplay, Beijing"]
[Site "?"]
[Date "2012.??.??"]
[Round "?"]
[White "Radjabov, T"]
[Black "Morozevich, A"]
[Result "0-1"]
[ECO "D96"]
[Annotator "Nigel Davies"]
[PlyCount "74"]
[EventDate "2012.??.??"]
[SourceTitle "OR: Grünfeld Defence"]
[Source "Everyman Chess"]
[SourceDate "2021.01.11"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. Bf4 {
This has become accepted as a serious alternative for White. The approach I
will recommend for Black is based on ...c6 and ...b5, gaining counterplay on
the queenside.} c6 8. e4 Qa5 {Threatening the e4-pawn because of the pin on
the knight on c3.} 9. b4 {It is certainly tempting to gain time on the queen
like this, but pawns cannot move backwards and this leaves White's queenside
look quite porous.} ({White's alternative is the solid looking} 9. Bd2 {
, but then Black can play} b5 {, after which} 10. Qb3 (10. Qc5 Qb6 11. Qxb6
axb6 {is also fine for Black, who has counterplay on the a-file}) 10... b4 11.
Na4 (11. e5 bxc3 12. Bxc3 Qc7 13. exf6 exf6 $1 {is fine for Black, who plans
to put a rook on e8 next}) 11... Nxe4 12. Bxb4 Qh5 {leaves him with an
excellent position as Black has eliminated one of White's centre pawns.}) 9...
Qd8 10. Be2 b5 11. Qb3 a5 {Gaining counterplay on the queenside, having first
sealed White's b-pawn with 10...b5.} 12. e5 ({After} 12. a3 {Black gets
counterplay with} axb4 13. Qxb4 Na6 14. Qb2 c5 {, breaking open the h8-a1
diagonal.}) 12... Nd5 {Not bad, but apparently not the best.} ({The silicon
servant suggests the amazing} 12... Be6 $1 13. exf6 Bxb3 14. fxg7 axb4 $3 15.
gxf8=Q+ Kxf8 16. O-O Bc4 $1 17. Bxc4 bxc4 18. Ne2 Nd7 {, when Black's advanced
queenside pawns more than compensate him for the sacrificed material.}) 13.
Nxd5 Be6 14. Qc3 ({QUESTION: Shouldn't White get a pawn for his knight with} 
14. Nxe7+ {- ? --- ANSWER: If Black plays this way Black will get the b4-pawn
after} Qxe7 15. Qc2 axb4 {, and in doing so gets an excellent game.}) 14...
Bxd5 15. a3 axb4 16. axb4 Rxa1+ 17. Qxa1 Nd7 18. O-O f6 {With ...c6-c5 being
unavailable Black relies on a different pawn lever. He already has a slight
edge due to his superior pawn structure.} 19. exf6 exf6 20. Qc3 g5 21. Be3 Re8
22. Ra1 (22. Bd3 Nb6 {is also better for Black as he has fewer pawn islands
and more space. Whether he can then win is another matter entirely.}) 22... Nf8
(22... Nb6 {might have been better, targeting the c4-square.}) 23. Bd1 Ne6 24.
Bc2 Bf8 25. Nd2 Qe7 26. Qd3 Qf7 27. Rb1 $6 ({Rather than this passive response,
White should have considered} 27. Qf5 Bxb4 28. Ne4 {, with play for the pawn.
After the move played Black takes control.}) 27... Nc7 28. Qf5 Be6 29. Qf3 Nd5
{The b4-pawn is falling anyway but without White having compensation.} 30. Ne4
g4 31. Qd1 Nxb4 32. Bb3 $6 (32. Rc1 {was relatively best, but then} Nxc2 33.
Qxc2 Bc4 {consolidates the extra pawn.}) 32... Bxb3 33. Qxg4+ Kh8 34. d5 {
Desperation, but there's not much left for White.} (34. Nxf6 {is equally
forlorn after} Qxf6 35. Rxb3 Nd5 {etc.}) 34... Bc2 35. Nxf6 Rxe3 36. Rf1 Re5
37. Qf4 Rf5 0-1

[Event "36: Munich Zonal"]
[Site "?"]
[Date "1987.??.??"]
[Round "?"]
[White "Zueger, B"]
[Black "Birnboim, N"]
[Result "0-1"]
[ECO "D97"]
[Annotator "Nigel Davies"]
[PlyCount "76"]
[EventDate "1987.??.??"]
[SourceTitle "OR: Grünfeld Defence"]
[Source "Everyman Chess"]
[SourceDate "2021.01.11"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Bg4 8.
Ne5 {QUESTION: This looks like a good move, putting the knight on a strong
square and gaining time. Why is it not more popular? --- ANSWER: Although this
looks obvious and quite good optically, White's knight will prove to be far
from stable on the e5-square.} Be6 9. d5 (9. Qb4 {will be examined in the next
game, Kulzinski-Gligoric.}) 9... Bc8 10. Bg5 ({After the developing move,} 10.
Be2 {, Black can play our typical} e6 {; for example,} 11. Bf4 (11. Bg5 exd5
12. Nxd5 c6 13. Nxf6+ Bxf6 14. Bxf6 Qxf6 {is fine for Black}) 11... exd5 12.
exd5 Ne8 13. O-O Nd6 14. Qd3 Re8 15. Nc4 Na6 16. Nxd6 cxd6 17. Rfe1 Bf5 18. Qd2
Nc5 19. Bb5 (19. Rac1 Qb6 20. Be3 Qb4 {½-½ was B.Kantsler-V.Mikhalevski,
Rishon Le Ziyyon 1997}) 19... Rxe1+ 20. Rxe1 Qb6 21. Be3 a6 22. Bf1 Bd7 {
gave Black good counterplay in B.Kantsler-V.Ivanchuk, Panormo 2001.}) 10... c6
11. dxc6 bxc6 ({Black could also play} 11... Nxc6 {, when} 12. Nxc6 bxc6 13.
Qxc6 Rb8 {gives Black more than enough for his pawn.}) 12. Be2 Qa5 13. Bxf6 (
13. f4 {is strongly met by} Ba6 $1 {, when play can continue} 14. Nxc6 Qc7 $1
15. Nd5 Nxd5 16. Nxe7+ Kh8 17. Nxd5 ({both} 17. Qxd5 f6 18. Bh4 Qxe7 19. Qxa8
Qb4+ 20. Kf1 Bxe2+ 21. Kxe2 Qxb2+ 22. Kf3 Qc3+ 23. Ke2 Nc6) ({and} 17. Qxc7
Nxc7 {win for Black}) 17... Qxc4 18. Bxc4 Bxc4 19. Nc7 Nd7 20. Nxa8 Rxa8 {
is good for Black as his active minor pieces are stronger than White's rook
and two pawns.}) 13... Bxf6 14. Nd3 Na6 15. e5 (15. Qxc6 {is good for Black
after} Nb4 {; for example,} 16. Qxa8 Nxd3+ 17. Bxd3 Bxc3+ 18. Kf1 Ba6 {hits
both the queen and White's bishop on d3.}) 15... Bxe5 16. Nxe5 Qxe5 17. O-O Rb8
18. Qxc6 Rxb2 19. Bxa6 Rb6 20. Qf3 Rxa6 {Black has emerged from the
complications with a good extra pawn.} 21. Rfe1 Qc5 22. Rac1 Qa3 23. Qf4 Be6
24. Ne4 Bf5 25. Rc3 $6 {Having found himself a pawn down White tries to
conjure up chances on the kingside.} ({Unfortunately for him it will not be
enough and} 25. Ng3 {should have been preferred.}) 25... Qb2 26. Qh6 {A losing
gamble but not much will help him now.} (26. Rce3 Rxa2 27. Ng3 Be6 {is just
hopeless for White.}) 26... Rxa2 27. Qh4 Bxe4 28. Rh3 h5 29. Qxe4 Qxf2+ 30. Kh1
Rd8 31. Rg3 Qf6 (31... Re2 {would have won on the spot.}) 32. h3 Ra1 33. Rxa1
Qxa1+ 34. Kh2 Qf6 35. Qb7 h4 36. Rf3 Qe5+ 37. Kg1 Rd1+ 38. Rf1 Qe3+ 0-1

