Slav or Semi?
- Slav or Semi-Slav?
- 1 The ideas
behind the Slav defence
- 1.1 Winning with the Slav
- 1.2 Losing with the Slav (ideas for White):
- 2 The Variations
- 2.1 The Big Four
- 2.2 Quieter play for White
- 2.3 Unconfrontational play by Black
- 3 Playing Slav-style against hypermodern openings.
- 1 The ideas behind the Slav defence
- 4 The Slav in club play
Since I put this together, all the pop-up games have stopped working, sorry about that. Normal service may or may not be resumed, but meanwhile, you can find and play through all the Slav & MacCutcheon games in this PGN file
Slav or Semi-Slav?
I've been discussing a choice of defence to 1.d4; defending classically with 1...d5 can't be bad, but what to play after 2.c4?
The Slav (2...c6, ECO D10-D19) and Semi-Slav (...c6 with ...e6, D43-D49) have a reputation for being solid, although the main lines of these systems are as sharp and bookish as any defence. We've seen several lines contested in World Championship matches between Alekhin and Bogolyubow and Euwe; other lines have been examined in Kramnik's matches (against Leko, Topalov and Anand) in recent years and, as you might imagine, the approaches have got quite sharp and sophisticated.
You can avoid all this lofty sophistication and go for solidity, but, as usual in chess, if Black declines to confront White in a theoretical line, Black must accept less than full dynamic equality. There is no easy route to equality in chess; if there were, no-one would play the game!
This is a sort of bird's-eye view of the Slav, with some hints for
Black about some less common lines. [See also How do you learn a
new opening?, forthcoming]
- 1 Ideas
- 2 Variations
- 3 Hypermodern Slav
- 4 Practical Slav
- 5 Heroes
- 6 Slav Index
- 7 So, which?
- 8 Bibliography and 9 Book reviews
1.1 Winning with the Slav
Both Slav/Semi-Slav: Grab the c-pawn
A rodeo variation... Grab something and try and hold on!
Take the c-pawn...
...and, while White is recovering the material, get developed, maybe hit back with either ...c5 or ...e5.
This is a very important theme. Black can often park their
pieces on natural squares in the Slav and think themselves solid, but
White's centre can roll over the Black position. So Black has to
do something about White's centre. If you consider
pawn formation after 1.d4 d5 2.c4 c6,
expand in the centre with e4. Black can deter or defuse this
advance by making their own assault on the centre with ...e5 or
...c5. However, ...e5 played now allows White to isolate the
d-Pawn after 4.cxd5 cxd5 5.dxe5; a similar possibility exists after
...e6 and ...c5. So, first Black plays ....dxc4 (Czech and Meran
Variations), then hits back
with ...e5. This is a delicate operation, since it leaves White
with a dangerous central majority for a move or ten, so you will need
to restrain White's pawns in the manner of the hypermoderns.
Here's the other counterblow in a game where Black was happy, even a move behind:
[Not a bad surprise weapon, although probably a poor first choice
a defensive system. Svidler, Kramnik's second, got a couple of
black eyes pushing his luck with it.]
Slav: early development of the Bc8
This is the main selling point of the pure Slav; we will solve the
problem of where to place this wretched piece by developing it first,
and then every other piece will fall into place (Nbd7 and Bd6 or
Bb4). A common post is f5, restraining the e-pawn which is
liberated by ...dxc4, or g4, pinning the Nf3.
1.2 Losing with the Slav (ideas for White):
[Gambit the c-pawn]
The brighter side of Black being tempted to grab it. It was
quite in Kasparov's early style to sacrifice a pawn for the
Current theory suggests this is better for Black, but at club level,
the initiative is a more powerful weapon than "=+".
Take over the centre
If Black is so good as to relinquish their stake in the centre, let
Harass the Black Queen's Bishop
Similarly, if Black is so insistent on getting out the Bc8, then
White can see it coming and work to take advantage of what may be a
Semi-Slav: Gambit the d-pawn
Black has an option of delaying the development of the Ng8, and
setting up a little triangle of pawns after 1...d5 followed by, in one
order or another, 2...c6 and 3...e6. This is a particularly handy
move-order for Black if you think White might play an Exchange
essential if you want to play the Abrahams-Noteboom Variation. However,
if White wishes to
encourage Black to play ...Nf6 (hoping perhaps to avoid the Noteboom)
then 1.d4 d5 2.c4 c6 3.Nc3 e6 can be
followed with 4.e4!? Now 4...dxe4 5.Nxe4 will lead to a simple
White plus unless Black grasps the nettle with 5...Bb4+ 6.Bd2 Qxd4
7.Bxb4 Qxe4. Instead Black can dodge with 4...Bb4 5.e5 c5 (an old
I think is still holding up well enough, but maybe White will get on
Black's case before long).
2.1 The Big Four
The four big sharp main lines, all still in use at the top level, are:
Slav: Czech System (Krause Attack)
White tries to swamp the centre, Black may have to sacrifice to hold
Even if White plays less sharply, it's by no means a calm game: take
at this one!
Someone commented 'perhaps only Kramnik understands these positions', but when asked the question about what is best for Black in 2006, he demurred:
Semi-Slav: Noteboom Variation
In the Abrahams-Noteboom Variation, Black all but abandons the
centre in favour of trying to score a try on the
Semi-Slav: Meran Variation
A finely poised battle between central occupation and
After the natural 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 (Black can try instead
8...b4 or the uncommital 8...Bb7; there is also 8...Qc7) 9.e4 c5 White
can play Reynold's
10.d5 or 10.e5 cxd4 11.Nxb5...
Semi-Slav: Botvinnik's Anti-Meran Gambit
Even among GM theory, this is regarded as a poisonously complicated
line, bewilderingly unbalanced.
All exhilarating stuff, but not for the faint-hearted and not to be
undertaken lightly (i.e. only with a big book and a bigger database and
preferably a team of
seconds and perhaps a computer in the toilet).
I have seen top SW
County players play all these lines (I've played one or two myself),
but they can all draw you into a theoretical arms race where only the
publishers win... These variations have been around for a long
while, I don't suppose they're likely to be refuted, but it seems the
exact dance steps you need to stay upright change very often in some of
these lines, even monthly. So, rather than face the
Botvinnik line, Black invented the Moscow Variation with 5...h6
(6.Bxf6), but now the Anti-Moscow (6.Bh4 dxc4 7.e4 g5 8.Bg3 b5 9.Be2
Bb7 9.h4!) is accreting layers of theory faster than a black hole in a
2.2 Quieter play for White
Eschewing the arms race of theory, White has many quieter options, which a club player might prefer:
Slav: Czech system, Dutch Variation
White defers the attempt to take over the centre with e4 until
development is complete. I say 'quieter', but White can push
accelerator if they wish... Nunn's Chess Openings [NCO] says that
6.e3 e6 7.Bxc4 Bb4 8.O-O Nbd7 (discouraging Ne5), White can force a
draw in some lines
after 9.Qb3, so, if that's an
issue, then play 8...O-O to keep the three possible results
Slav: Slow Variation
I used to think of this as an unconvincing attempt by White to keep
some play going in the Colle (1.d4 d5 2.Nf3 Nf6 3.e3 Bf5! 4.c4 c6); I'm
tempted to name it the Colloid, in recognition of its
gooey nature.... Now it turns out to be cutting-edge World
theory. The continued interest by GMs in teasing out the
subtleties of this
line is lost on me, but let us put it down to the inexhaustible
richness of the chessboard rather than a collective exercise in
stodginess. I guess while Black is solid, White is very flexible
and has the two Bishops; Black must wait for White to reveal their
plan. Topalov stung Kramnik with an innovation in the
middle of their 2006 match but neither side
chose to repeat the line with either colour later in the match (Kramnik
choosing the old 8.g3 and Topalov 8.Rb1: most cagey...). 4...Bf5
is natural but 4...Bg4 is OK and even 4...g6 is playable, although not
a formation Slav players will be very familiar with.
Semi-Slav: Anti-Meran Stodge
White secures the centre but puts less pressure on Black.
White can be even more dull with 4.e3 e6 5.Nbd2, after which you can
try 5...c5!?, hoping to sharpen the play. As usual, it's hard for
Black to insist on active play if White wants a quiet game.
Having libelled this variation as 'stodge', I must mention that Shabalov came up with 7.g4!?, now known as the Latvian Bayonet after Shirov got hold of it. Here's an influential game:
Since then, Shirov has been obliged to defend against his own weapon:
It seems that, as White is likely to castle Queen's-side, 7...Bb4
8.Bd2 c5! is also an effective antidote.
White has one last 'slow' option that is often seen as unspeakably dull:
Slav: Exchange Variation
Well there are still 30 bits on the board, you can still try and make something happen...
One example of the move order subtleties being negotiated is that
after 3.cxd5 cxd5 4.Nc3, Black
can play an
improved version of the Winawer Counter-Gambit with 4...e5! [NCO]. So, White might
prefer to play 3.Nc3 or 3.Nf3 before exchanging (but 3.Nc3 allows not
just 3...e5?! but 3...dxc4!?). Players of the
Semi-Slav at least have the opportunity of
recapturing with the e-pawn, which offers more unbalanced play.
Vigus says Black can chase the Bf4 with ...Nh5, an idea played by
Botvinnik and Basman...
2.3 Unconfrontational play by Black
Black can also avoid the sharpest lines. For example, rather
than face Botvinnik's Anti-Meran Gambit, Black can dodge with 5...h6
(Moscow Variation) or slide out into the
Queen's Gambit Declined by 5...Nbd7, when,
after 6.e3, 6...Qa5 is a Cambridge Springs and 6...Be7 is a true
Slav: Alternatives in the main line
James Vigus has built a repertoire book around the soild Sokolov
Variation: 1. d4 d5 2. c4 c6 3.
Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6.
Ne5 Nbd7 7. Nxc4 Nb6 (rather than 7...Qc7), and that's got to
There are other alternatives which are surely playable but perhaps not so dynamic. I used be be a believer in the Bronstein (Steiner) variation with 5...Bg4; 6.e3 looks a bit limp, but after 6.e4 e5!? or 6...e6 and 7...Bb4 Black gets good play, and after 6.Ne5 Bh5 7.e3 or 7.g3 or 7.h3 Black can equalise. This variation was recommended a long while ago in a repertoire book by Andy Soltis, and I've had a sort of avuncular interest in it over the years, but when I caught up with recent developments(*) it started to feel like too much of a struggle: too much theory for too little play. NCO gives 5 rows for this variation, and lots of notes, the bottom line is +=... But you can always walk into a +=, it depends if you fancy it! Nikolic, Flear, Conquest and Vigus have all dabbled in it over the years.
(*) The current recommendation for White is to sharpen the game more, with 6.Ne5 Bh5 7.f3, after which there are complications and promising conclusions for White. 7...Nfd7!? has the bright idea of 8.Nxc4 e5! (9.dxe5? Qh4+) but even if, after 9.Ne4 Bb4+ 10.Bd2 Qe7 11.Bxb4 Qxb4+ 12.Qd2 Qxd2+ 13.Kxd2 exd4 14.Ned6+ Ke7 15.Nf5, Black can hold with 15...Kd8, Sadler still reckons White has promising play after 9.g3, 9.Be3 and the bonkers 9.e4.
Cox suggests 9.g3 f6 10.dxe5 Nxe5 11.Qxd8 gives a small advantage, while 9.g3 Bb4 10.dxe5 O-O 11.Nh3 Qe7 12.f4!? (12.Bf4!?) is still up for grabs.
So perhaps Black should play the less common 7...e6 and hope either that White doesn't have the bottle for 8.g4, or that it's no worse a position to be in than many in the Slav. White's score from games at www.chesslive.de was pretty impressive, but GM Illescas managed to drop a game against it. Cox reports the critical line is 8.g4 Nd5 9.e4 Qh4+ 10.Ke2 Nxc3+ 11.bxc3 Bxg6 which Burgess gives as unclear but Cox thinks is better for White. Presumably people have pondered this over the years but the ChessBase site turned up exactly one Black win in that line, a correspondence encounter which continued instead 11...f6!? Alternatively 8...Nfd7 was the line that Illescas lost to... Over to you!
There are other choices here; 5...Na6
is a typically flexible
try by Smyslov (with just one row of NCO) which has been played by
other independent spirits like Ivanchuk and Nikolic and parochially
Conquest, Speelman and Short (who beat Kramnik with it). One
point is 6.Ne5 Ng4! 7.Nxc4 e5!,
so White normally submits to the ...Bg4
pin with 6.e3 or the more characteristic 6.e4; after 6.e4 Bg4 7.Bxc4
Black can now or later double the f-pawns by 7...Bxf3, another theme
typical of the variation.
I've been watching local players get away with
5...a5 for years: it's
theoretically += but who knows the theory?
[6.e4 Bg4 7.Bxc4 e6 8.0-0 Bb4 9.Re1
Bxf3 10.gxf3 Nbd7 11.f4 0-0
12.Qf3+= (Sosonko)]. Bogolyubov's 5...e6 is also probably
concedes the main advantage of the Slav move order, namely, developing
Semi-Slav: Alternatives to the Meran
Against the Tchigorin Variation with 6...Bd6, White often gets a
space advantage which Black can patiently wrestle
down. As far as I understand it, White is currently recommended
to play 7.e4 immediately, as 7.O-O O-O
allows the familar counter-blow ...dxc4 and ...e5; with the Black King
uncastled, this is riskier.
I wrote about the Tchigorin and Romih (6...Bb4) in a booklet many years ago. In these
lines, you can write all the theory you need to know on the
back of a postage stamp. Maybe they're short of full equality,
but you can end up += in the main lines, too! Perhaps a worse
drawback is that you get less dynamic play. The idea of the Romih
is to deter e3-e4 and perhaps later return to the b8-h2 diagonal to
Slav: Chebanenko Variation
The latest fashion in the Slav is the Chebanenko (Chamaeleon)
variation with an early 4...a6,
which is essentially a way of deferring
a decision about any of those ideas and tempting White to make some
sort of commitment first. I haven't attempted to tackle any of this
theory, but there are some recent books on it.
Early ...a6s have been popping up all over the place, in fact.
line popular in the 1930s which has had renewed interest:
The main hypermodern systems are the Catalan, English and Réti openings.
Grabbing the c-pawn
The Closed Catalan with ...c6 concedes space and initiative to White, but grabbing the c-pawn can be the usual rodeo ride.
...b5 against the Catalan.
Playing Semi-Slav with both ...c6 and ...e6 looks rather too modest against hypermodern systems; not exactly bad, but White can set up their position just as they wish then work out where to punch you. There is a line with ...c6 and ...b5 which is easy enough to understand and might be worth a try:
Slav-style against the Réti with b3
The systems with ...c6, ...d5, ...Nf6 and either ...Bf5 or ...Bg4 are well-respected tries against the Réti, with a long history:
Slav-style against the English and Réti without b3
The lines with an early development of the Bishop can run into trouble if White declines to defend the c-pawn and instead harasses the Bishop which has been developed to f5 or g4; the tempi saved by omitting b3 and d4 mean that White's initiative is more difficult to contain.
N.B. If White starts with 1.c4, you cannot guarantee to play a Slav system, because if 1...c6, perhaps 2.e4. If Black goes ahead with 2...d5, the game can transpose into the Panov-Botvinnik Attack in the Caro-Kann 3.exd5 cxd5 4.d4, or into a related variation with 4.cxd5. Neither are bad for Black, but these are sharp lines which may be outside your repertoire. If so, you may prefer to slide into a version of the Old Indian with 2...e5.
Many of us have a repertoire book on which we base our opening choices, so it would be worth checking out these lines too; working from the present to the past:
John Cox (2006) recommends playing proper grown-up chess against
everything, so that means meeting the Slav with the Modern Ne5 and
finding something against Morozevich's fabulous 11...g5. He then
goes on to recommend the Botvinnik Anti-Meran Gambit and the Marshall
Gambit. [I honestly don't know how suitable these lines are for
people 'starting out'; if your opponents allow you to enter such lines
they may know enough to duff you up without ever playing a move of
Richard Palliser (2003) has recommended the Slow Slav with 4.e3
(against which I like to play 4...Bf5 while Vigus suggests
4...Bg4). Palliser also honestly gives what may be an equalising
line against his variation: Palliser,R
(2455) - Houska,J (2386) [D12]
4NCL Telford ENG (4), 19.01.2003 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Qb3 Qc7 7.Bd2 e6 8.Bb5+ Nbd7 (8...Nfd7!? DR) 9.0-0 a6 10.Bxd7+ Nxd7 11.Ne5 and now 11...Bc2 12.Qc3 Rc8
Angus Dunnington (2001) recommended the QGD Exchange Variation against the Semi-Slav while against the Slav itself chose the anti-theoretical 1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Bg5 -- not critical, but of course very playable.
Ray Keene and Byron Jacobs (1995) also recommended the QGD Exchange but also chose the Exchange against the Slav.
Like Cox, Graham Burgess and Steffen Pedersen, recommend, in their thorough 1994 repertoire book, rather grown-up main lines across the board: 6.Ne5 against the Slav and the Marshall Gambit against the Semi-Slav, balking at the Botvinnik Anti-Meran but finding a promising early diversion (7.a4).
Glenn Flear suggested 5.Qb3 for White in 1988; I think 5...dxc4
6.Qxc4 b5 7.Qb3 Nbd7! is the recipe for Black.
So, be prepared for any of these... depending on when the most recent date that your opponent's visit to a chess bookstall coincided with a rush of blood to the head.
I have a database of local games (see www.chessdevon.co.uk) and wondered what ordinary players adopted. So, of 409 local games (with every standard of player from Minor to GMs), we had 270 Slavs and 112 Semis. White scores an absolutely average 55% against both defences (I believe White does a little better than this at GM level).
In the Slav, the single largest group was D10, a grab-bag of
non-standard systems, followed by D13 (standard exchanges) and D15
(non-standard Czechs). In the Semi, the leading system was D45
(non-standard Semis). I think the only conclusion we can draw is
"so much for theory...": our opponents are so busy fighting shy of
whatever theory they think we know, that our inadequacies are unlikely
to be exposed. Just eight brave players negotiated with
their opponents to play 4 examples of the very main line of the
Capablanca played the Slav throughout his career, I think losing just one game. [Avoiding loss doesn't quite have the 'heroic' stamp about it, but is something many of us would settle for.] Contemporary supporters include Shirov, Anand and Kramnik of course, but if their stratospheric displays are more daunting than inspiring, it may be that we need to look elsewhere for a model to follow. Glenn Flear has played the Slav all his career, I think, and so his games and comments are always worth looking at. Gurevich is a hero of the Semi-Slav, happy to play the sharpest lines of the Meran and Botvinnik.
1.d4 d5 2.c4 c6 (or ...e6 first, depending on how you feel about various versions of the Exchange)
Black's key choices are highlighted in orange.
four in heavy type)
||Exchange Variation with ...a6
||Transposition to next row
Defence (Alekhin Variation)
||Semi-Slav (transposes below)
||Czech System, Dutch Variation
System, Krause Attack
||Alekhin Variation (yes, I know)
||QGD Cambridge Springs Defence
- If you prefer the main QGD Exchange to the Slav Exchange, or your previous defence was the QGD Orthodox, that's a clear push for the Semi-Slav.
- If you can't bear to have a blocked Bc8, then play the Slav.
- If you play the Caro-Kann or the Scandinavian with 2...Qxd5, then
play the Slav; the French fits with the Semi-Slav.
- If you play a lot of Colles, then the Semi is a natural partner.
- If you're happy attacking a big centre, try the Slav; the Semi-Slav seems to me to concede less ground.
As befits a player of my mature standing, all my books on the Slav are ancient and out of date (Harding, Flear, Silman & Donaldson...). The Slav is pretty popular these days, and so are opening books, so I won't recommend any of the books I actually own... Our younger readers might even prefer something databasey. Depending on what depth of coverage you're after:
- MARTIN: ABC of The Modern Slav
- SHIROV: My Best Games in the Slav and Semi-Slav
- ROGOZENKO: Slav Defence
- [Chess Assistant]: Modern Chess Openings - Slav Defence
- PLASKETT: ...a6 Slav
Baby bear's Porridge:
- FLEAR: Starting out: Slav and Semi-Slav (ChessBase version
- SADLER: The Slav
- SADLER: The Semi-Slav
- VIGORITO: Chess explained: Mainline Slav
- VERA: Chess explained: Meran (Semi-Slav)
Mummy Bear's Porridge:
- PEDERSEN: Botvinnik Semi-Slav
- FLEAR: Slav ...a6
- VIGORITO: Play the Semi-Slav
- VIGUS: Play the Slav (ChessBase version available)
- BOLOGAN: Chenanenko Slav
Daddy Bear's Porridge:
- BURGESS: The Slav
- WELLS: The Complete Semi-Slav
After a soggy phase, it feels to me like the general standard of
chess books has improved a lot, so I expect none of these books are
bad, but in case you want to check
the content and level suits you (specific books are listed before more
inclusive sites with potentially several reviews):
- Aha! should have found http://www.kenilworthchessclub.org/links/books.html
some of the links have rotted away)