Christer Sundqvist: New ideas in the Grünfeld Defense
This is a summary of a massive analysis package that includes the Grünfeld Defense. I'd like to demonstrate a typical line of play in order to pique your interest in this rapidly evolving chess opening.
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Grünfeld Defense
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.other
I have used these resources:
Batsford's Modern Chess Openings (15th edition) = MCO
Chess Cloud Database Query Mode (https://www.chessdb.cn/queryc_en/) = CCD
Chessbase software
ICCF Games Archive (https://www.iccf.com/message?message=454 ) 1961–2026
Opening Master Chess Database (https://www.openingmaster.com/)
Personal chess database (approx. 90 million games)
Stockfish 18 chess engine
Sundqvist, Christer. The Grünfeld Defense played by a strong correspondence chess player 2019-2026
Peter Svidler. Chessable Lifetime Repertoires: Peter Svidler's Grünfeld − Part 1, 2024
The Week in Chess (https://theweekinchess.com/twic ) 1994–2026
1.d4 Nf6 2.c4 g6 3.Nc3 d5
The Grünfeld Defence, devised by the Austrian master Ernst Grünfeld in 1922, leads to the most open game of all the Indian Defences. The exchange of Black’s d-pawn ensures that there are none of the blocked-up positions. The play is often wide open and tactical, which appeals to certain players. It has been a regular defence in the careers of Leko, Kasparov, Fischer, Smyslov, and Korchnoi, among others. Despite the initial impression given by the opening, the Grünfeld is considered a very respectable and sound defence. White obtains a big pawn centre, but Black makes use of the “hypermodern” concept of attacking the centre from afar in order to control it. Certainly there is danger that White’s big centre will lead to a strong attack, but Black aims to sidestep the central steamroller and attack it instead. One positional note is that White sometimes gains a passed d-pawn, which can cause trouble even in the endgame.
4.cxd5 Nxd5 5.e4
5.Bd2!?
An interesting try. Played by Carlsen, Abdusattorov, Giri, Lazavik and Duda just to mention a few strong players.
5...Bg7 6.e4 Nxc3 (Also 6...Nb6 is often played.) 7.Bxc3 0–0 8.Bc4
8...c5 9.d5 Bxc3+ 10.bxc3 Qd6
A very typical move in these positions. Black would like to have access to the f5 break later, and for that to work, we need to make sure White can’t just play e5 in reply. The queen on d6 also stops White from playing f4.
11.Ne2
The most restrained move White has here, forgetting about immediate attack and intending to castle and then reevaluate. It also supports the f4–e5 push later.
11...Nd7 12.Bb3 It’s important to sidestep the potential knight jumps here.
12...b5
Black is gaining space on the Queen-side and not committing to anything in the center just yet.
13.0–0 a5
Black has an easy plan: to continue pushing on the Queen-side. If allowed, Black would like to continue with c4 Bc2 b4, and only react to what White is doing in the center when he absolutely has to.
14.c4 bxc4 15.Bxc4 Rb8
Black has enough counterplay on the Q-side, intending Rb4, Ba6, Rfb8 etc.
5...Nxc3 (5...Nb6?! leaves White with total control of the centre.)
6.bxc3
White immediately obtains the classical centre with its attacking prospects.)
6...Bg7 (6...c5 Played by Firouzja, MVL and Svidler, but Bg7 is the main line.)
7.Nf3
Black has been finding good defenses against the exchange sacrifice and other lines of the traditional continuation, so focus has shifted to 7.Nf3 and 7.Bc4
7.Bc4
This line is often called The Classical Grünfeld. It has been a mainstay for White players for a very long time. Botvinnik played it in his title matches against Smyslov. Spassky won a number of brilliant games in it, including a famous win against Fischer at the 1970 Olympiad in Siegen. It has also been a very important topic of discussion in the Karpov-Kasparov matches. In the new Millenium, its popularity was on the decline, but in the last couple of years, White players started returning to it, arguably due to the influence of Alpha Zero and other Neural Network engines, and their love for pushing the h-pawn forward in every possible position. The basic idea of this move is to get the bishop out of the way so that White can develop the knight to e2, not f3, leaving the f2–pawn free to march up the board, if necessary, and also protecting the knight from the Bg4 pin which Black often employs when that knight is developed to f3.
7...c5 (Counterplay starts with c5 and Nc6, attacking the d4–pawn.) 8.Ne2 (Better than 8.Be3 first, since it runs into 8…Qa5.) 8...Nc6 9.Be3 0–0
A) 10.0–0 (the main line)
10...Bg4
At first glance, it seems strange that we are provoking f2–f3 here, but the fact that the bishop on e3 is slightly less solidly placed, and the opening up of the g1–a7 diagonal for the future, is much more relevant.
11.f3 Na5
This used to be the starting position of the 7.Bc4 line, the absolute tabiya. It has been discussed in countless top-level games, including the Karpov-Kasparov World Championship matches. The games are split fairly evenly here between 12.Bxf7 , which leads to dry endgames where White runs pretty much no risk, and 12.Bd3 , where the game is likely to become extremely sharp and concrete.
12.Bd3 (12.Bxf7+
White plays to win a pawn, a line that gained popularity for years following the 1987 World Championship in which Karpov played this several times against Kasparov, scoring well. In later years Black has found satisfactory continuations.
12...Rxf7 13.fxg4
Black is a pawn down, and in a lot of cases, won’t be able to win that pawn back.
13...Rxf1+ 14.Kxf1 Qd6
It is very important for Black to play as energetically as possible. Allowing White to consolidate would be a very bad idea here.
15.Kg1 Qe6
The counterplay in this subline hinges on this move. Black is attacking both of White’s weakened pawns and is also aiming for the c4–square.
16.Ng3 Qc4
Creates a ton of pressure against the center.
17.Qd2 Rd8 18.Ne2 Nc6 19.Rd1 Qa4
The same idea as before. Black is keeping the White position under as much pressure as possible, and preparing to strike against the d4–pawn.
20.h3 cxd4 21.cxd4 Bxd4 22.Nxd4 Nxd4 23.Bxd4 e5 24.Qe2 exd4
This endgame is equal. White has a slightly safer king, but the central pawns are very likely to get swapped and then there’s just not enough material left.
12...cxd4 13.cxd4 Be6 14.d5
The main line. White sacrifices the exchange, but gets a lot of play against the weakened black king. This move is pretty much the only one you can expect in this line these days, but in the past, there were alternatives, in particular 14.Rc1.
14...Bxa1 15.Qxa1 f6
The starting position of the 14.d5 line. Black needs to play f6 here to be better prepared for the Bh6 threats. White has a long list of different options. I will show one line of play.
16.Bh6 Re8 17.Kh1 (17.Nf4 Bf7 or 17.Nd4 Bd7 are both quite inefficient since Black is ready to play Rc8 and Nc4, while White isn’t threatening anything.)
17...Rc8 Bringing pieces into play and not wasting tempi on retreating the bishop until forced to.
18.Nf4
Pretty much the only move here and the reason for White’s previous play. (18.Qd4 Bd7! 19.e5 Qb6! no longer makes much sense. And if 19.Qxa7 Nc4 , while 19.Rb1 will be met by 19…b5!)
18...Bd7 19.e5
The entire point of White’s previous play, sidestepping the usual reply of taking on e5 and playing Qb6+ followed by Qxf6, so there is a need to do something else. What follows is a long and almost entirely forced line, leading to a draw.
19...Nc4 20.e6 Ba4 21.Nxg6
Once again, the only way to justify previous play. If Black gets time to play Ne5, White’s initiative just dissipates.
21...hxg6 22.Bxg6 Kh8
Easier than the messy line starting from 22…Ne5.
23.Qd4 This is another way to try to get the queen to the h-file, but we can handle it. 23...Ne5;
B) 10.Rc1
Despite its quiet initial look, this is a very aggressive line. White is intending to secure the center and then launch a direct attack on the kingside with h4.
10...cxd4 11.cxd4 Qa5+
A difficult move to meet.
12.Rc3
A very modern line of play. The classical 12.Kf1 has been more or less solved for a while.
12...e5 Svidler likes this move.
13.d5 b5
This is the point of the previous move − there is a need to make White choose a square for this bishop before Black commits to a square for Nc6.
14.Bd3 Nb4 15.0–0 Nxd3 (Followed by b4, Ba6 and Rfc8 is a very unclear position. White has a protected passer on d5, but Black’s trumps are also quite significant, not least among them the very restricted knight on e2.)
7...c5 8.Rb1
One of the most challenging and theory-heavy lines White can choose against the Grünfeld. It exploded in popularity in the late 80s-mid 90s, due to the efforts of Chernin, Gelfand, Khalifman, and later Kramnik. By moving the rook from the long diagonal, White players are giving themselves an opportunity to react to Nc6 with d5, making Black’s play against the center a lot more difficult. By the late 90s, Kramnik has established himself as one of the main theoreticians of this line, together with Khalifman and Gelfand.
8.Bb5+
This line used to be played exclusively in games where White wanted a quiet draw, with a 10% chance for a little push in a riskless endgame. But it has since evolved into a very sharp and ambitious attempt that needs to be taken seriously.
8...Nc6
This is the principled reply. (8…Nd7 misplaces the knight in the context of the fight for the center and also stops us from having access to Bg4, while 8…Bd7 9.Be2 is a version of the Nf3/Be2/Rb1 lines where Black definitely prefers the bishop to be on c8, to have better pressure against d4, and doesn’t have to worry about protecting b7. However, 8…Nc6 does allow White to go for the complications with 9.d5 which aren’t at all trivial and will require precision from Black.)
9.Rb1
This move, extremely rare until very recently, has been gaining steam in the last couple of years, with very strong players trying it out. Black needs to be careful, but common sense should see Black through. The immediate idea is, of course, to play d4–d5.
9...0–0 10.d5 Ne5
Taking on c3 is possible here, but Svidler wouldn’t recommend it. White gets a lot of play for it.
11.Nxe5 (The two options White has here: 11.Nxe5 and 11.O-O are very similar, but Svidler thinks the Nxe5 move is slightly trickier to face.)
11...Bxe5 12.0–0 Bxc3
The Grünfeld expert Peter Svidler likes 12...Bxc3 better than the alternatives: 12…a6 13.Be2 Bxc3 14.Be3 Qa5 15.h4! , with initiative for White in Yu Yangyi-Nepo, World Cup 2019, or 12…f5 13.Bh6 Rf7 14.d6! , and Svidler is not entirely convinced Black equalizes, despite engine’s assurances.
13.Be3 b6
Since Black chose not to play a6, the structure on the queenside is a lot more solid. White can win the pawn back here, but it leads to trades and equality.
14.Qd3
In order to play Bc6, White needs to stop Ba6 ideas first.
14...Bg7 15.Bc6 Rb8 16.Bxc5 Bd7
By attacking the c6–bishop while the pawn on d5 is pinned, Black is forcing White to allow the recapture on c5.
17.Bxd7 bxc5
Black is fine here, his pieces are clearly active enough, and trades along the b file are likely.
8...0–0 9.Be2
And now we’re at an important crossroads. There is a number of ways to chicken out of playing the main line, but if Black wants to actually equalize here he has to bite the bullet.
9...cxd4 10.cxd4 Qa5+ 11.Bd2 Qxa2 12.0–0
The tabiya of the 8.Rb1 line. White has sacrificed the a2–pawn but as compensation White has better development, a good center, and the queen on a2 is very awkwardly placed. Black used to have a wide choice here, but by this point, only the main move remains.
12...Bg4 (Starting immediate counterplay against the white center.)
13.Bg5!?
13.Be3 Nc6 14.d5 Na5
As usual, having the a1–h8 diagonal open makes the queen on a2 feel safer, and we’re one move away from completely consolidating (b6 or Rfc8 come to mind). However, for now White has a good target − the pawn on e7.
15.Bg5 Qa3
Svidler thinks Qa3 is a good all-round option.
16.Re1
This is the most recent try for White. In 2020, Magnus himself played this against Nepo. Black is fine though.
16...Rfd8 17.e5 h6 18.Bc1 Qa2 19.Rb2 Qa1 20.Rb4 Bxf3 21.Bxf3 Nc6 22.Ra4 Qb1 23.e6 f5 1–0 (42) Pettersson,R (1841)-Lagergren,H (2057) ICCF 2025]
13...h6
Ignoring the threat to the e7–pawn. The materialistic 14.Bxe7 is met by 14…Re8 15.Rxb7 Nc6 and having given up both pawns, Black is ready to take on e4 when the bishop retreats, with a good game. Provoking h6 like this may seem illogical, but there will be positions where that pawn might be hanging, restricting Bg7’s mobility.
14.Be3
Black's reply here is to continue ignoring the fact that b7 hangs in favour of speedy development.
14.Bh4
An extremely sharp line which has been White’s hope for some time, but after a Kramnik-Anand game its appeal somewhat waned. Black should now play very energetically.
14...g5 15.Bg3 Nc6 (Pushing White to play d5.) 16.d5 Rad8 17.Rxb7 e6 18.d6 Bxf3 19.Bxf3 Qa6
Followed by either Be5 or Ne5, allows Black to launch a full-strength assault on the d6–pawn.
14...Nc6 15.d5 Na5
If Black gets a tempo here to play b6 or Rc8, he will be completely fine instantly.
16.Bc5
Gives White compensation for the pawn. Pretty much the only serious move here. White needs to be attacking Black’s weak points while it’s still possible. 16.h3 Bxf3 17.Bxf3 Nc4 is completely anemic.
16...Bxf3
16...Bf6
This line leads to positions that look scary, but it is a cleaner way to make a more or less forced draw.
17.e5
The only way to make progress.
17.Rb4 Rfc8 18.Ra4 Qb3 (with the usual fork with b6, in the end, is completely safe for Black.)
17...Bxe5 18.Rb4 Bxf3 19.Bxf3 Rfc8
This is an improvement over the old approach of 19…Rae8 20.Be3! being the whole point, White is back to threatening Ra4 by moving the bishop away from the b6–fork, while also attacking h6. Here, Black has to play 20…Nc4 21.Bxh6 Nd6 , giving up the exchange but establishing a decent dark-squared blockade. Svidler is not 100% sure this holds.
20.Bxe7 Rc4
This is the point. Black has given up the e7–pawn, which is very panic-inducing in these lines, but is also quite active now, and will either get a pair of rooks off the board or get to play Rd4 if White tries to avoid the trade. The lines are still very forced, but Svidler believes this is a draw.
21.Re1
Crucially leaves that rook hanging in a very forced line here.
21...Rxb4 22.Bxb4 Nc4 23.d6
The pawn needs to run.
23...Qb2 24.d7 Qxb4 25.d8Q+ Rxd8 26.Qxd8+ Kg7
Because of the crucial tempo, Black gets here attacking the Re1. The position will stabilize and hold.
17.Bxf3 Rfe8
18.Bd4 (18.Re1 Nc4 19.Rxb7 Bf6 20.Bd4 Reb8 21.Re2 Qa3 22.Rxb8+ Rxb8 23.e5 Qb3 24.Re1 Bg7 25.Bxa7 Qxd1 26.Rxd1 Rd8 ½–½ (31) Siamko,P (2212)-Rosenhöfer,T (2355) ICCF 2024)
18...Bxd4 19.Qxd4 e5 20.Qd3 b6 21.h4 Nb7 22.h5 g5 23.Bg4 Nd6 24.Rfc1 (24.Rbc1 Qa4 25.Rc6 Rad8 ½–½ (35) Pommrich,R (2380)-Sørensen,M (2385) ICCF 2025)
24...Qa4 25.f3 Qd4+ 26.Qxd4 exd4 27.Rc6 (27.Kf2 f5 28.Rc6 Rad8 ½–½ (36) Landes,E (2401)-Hernandez,A (2395) ICCF 2024)
27...Rad8 28.Kf2 b5 29.Ra6 d3 30.Rd1 f5 31.Bxf5 Nxf5 32.exf5 Rxd5 33.Rxa7 Re2+ 34.Kf1 Ree5 35.Ra3 Rxf5
½–½ (35) Velilla Velasco,F (2525)-Straka,Z (2503) ICCF 2025
Said and written about the Grünfeld Defense:
- Is Gruenfeld Really "Garbage" at Intermediate Level? Hikaru and Levy Said So
- How bad is the Grünfeld?
- Understanding the Grunfeld Defense
- A Comprehensive Guide to the Grunfeld Defense
- This will change your understanding of the Grunfeld Defence | Small Opening Mistake
- Grunfeld Defense
- The Grünfeld Defence - Chess Openings Explained
- How to fight the Grunfeld Defense?
- What should every chess player know about the Grünfeld Defence?
- What do you think about the Grunfeld Defense?
