Kingsights Logo
Grunfeld Defense report from your own games

Grunfeld Defense report from your own games

Strike at the heart of White's center. See if your Grunfeld counterplay is as sharp as it should be.

Free • Instant Analysis • Works with any Chess.com username

Sample Report Preview

Here's what a personalized Grunfeld Defense analysis looks like

Sample Report

Grunfeld Defense Report

25 GAMESSample Data
Win Rate
44%

Performance vs Other Openings

Grunfeld Defense44% Win
Other Openings48% Win

Key Insights

Your ...c5 break is consistently 2-3 moves behind the optimal timing
black
High Impact

Counterplay Against White's Center Arrives Too Late

What this means
In the Exchange Variation, your average timing for the ...c5 break is move 11.8, while database analysis shows the optimal window is moves 8-10. In 8 of 11 Exchange games, White consolidated the center with Bc4, Be3, and Qd2 before you challenged with ...c5. Your win rate in the Exchange is a concerning 36%. In game #76, you played ...c5 on move 14 — by then White had already set up the ideal e4-d5 pawn chain and your counter was harmlessly deflected. Game #132 shows a similar pattern: ...Bg7, ...O-O, ...c6, ...a6 before ...c5, wasting critical tempi.
How to improve
In the Exchange Grunfeld, treat ...c5 as an urgent priority, not a long-term plan. The typical sequence should be: ...d5xc4, ...Bg7, ...O-O, ...c5 immediately. Delay ...Nbd7, ...a6, and other secondary moves until after the central challenge is launched. Study games by Grischuk and Svidler for optimal counterplay timing — their ...c5 averages move 8-9.
#timing#counter-attack#pawn-breaks
Your g7-bishop is being blocked by your own pawns in too many games
black
High Impact

Underutilizing the Long Diagonal Pressure

What this means
The g7-bishop, the cornerstone of the Grunfeld, is effectively blocked in 64% of your games. You place pawns on d6 and e5 creating a wall that neutralizes your own fianchettoed bishop in 16 of 25 games. When the g7-bishop is active (clear long diagonal a1-h8), your win rate is 67% (6/9). When it is blocked, your win rate drops to 31% (5/16). In game #198, your bishop sat on g7 doing nothing for 20 moves while your d6-e5 pawn chain turned it into a spectator.
How to improve
Treat the g7-bishop's activity as a barometer for your position. Avoid the ...d6/...e5 setup unless absolutely forced. Instead, keep the center fluid with ...c5 and maintain the pressure on the long diagonal. After ...c5, if White plays d5, counter with ...b5 or ...e6 to reopen lines. In the Fianchetto Variation, the plan ...Nc6, ...Bg4, ...Qa5 keeps the diagonal open while creating queenside pressure.
#piece-activity#bishop#strategy
Your understanding of the Russian System and Fianchetto is significantly stronger

Solid Results in Non-Exchange Lines

What this means
In the Russian System and Fianchetto Variation combined, you score 50% (7 wins, 5 losses, 2 draws in 14 games) compared to 36% in the Exchange. Your accuracy in these lines averages 79% versus 68% in the Exchange. The less forcing nature of the Russian and Fianchetto systems seems to suit your strategic style better. In game #256 (Russian System), you demonstrated excellent positional understanding with a smooth ...c5, ...Nc6, ...Bg4 plan that generated lasting pressure.
How to improve
Consider steering toward Russian System and Fianchetto positions where your results are markedly better. Against the Exchange Variation, since you cannot control White's choice, invest study time in the critical Exchange lines — particularly the 7.Bc4 main line and the 7.Nf3 sideline. Your non-Exchange results suggest you have strong Grunfeld understanding; the Exchange gap may be a preparation issue rather than a conceptual one.
#repertoire#strengths#preparation

Top Variations

1
Exchange Variation
11 games
2
Russian System
8 games
3
Fianchetto Variation
6 games

Enter your Chess.com username to see your personalized report

What we analyze in your Grunfeld games

Your execution of the central counterattack with d5

Your handling of the Exchange Variation's pawn center

Your piece pressure on the c3 and d4 squares

Your endgame technique in typical Grunfeld structures

Your timing of the c5 break

Your bishop activity on the long diagonal

Learn This Opening

Play through the main line move by move

1.pawn to d4 (d4) knight to f6 (Nf6)

白はd4で中央をコントロールし、黒はナイトを展開してe4のマスをコントロールします。

Opponent is playing…
1.d4Nf62.c4g63.Nc3d54.cxd5Nxd55.e4Nxc36.bxc3Bg77.Nf3c58.Rb1O-O9.Be2cxd4

Key Positions to Know

Critical concepts every Grunfeld Defense player should understand

Striking the Center

With 3...d5, Black immediately challenges White's c4 pawn. This is the Grunfeld philosophy: let White build a big center, then demolish it. The g7 bishop and central pressure combine to attack White's over-extended pawns.

White's Imposing Center

In the Exchange Variation (4.cxd5 Nxd5 5.e4), White gets a massive pawn center. Black relies on piece pressure (especially the g7 bishop) to show these pawns are targets rather than strengths. This is the ultimate test.

The Long Diagonal Pressure

The g7 bishop is Black's powerhouse. It pressures d4, eyes b2, and supports queenside counterplay. Many Grunfeld games are decided by whether this bishop can become dominant or gets blocked by White's center.

Strategic Plans

♔
White's Plans

  • •中央のポーン・マジョリティ（特にd4とe4）を維持し、空間の優位性を活かします。
  • •適切なタイミングでd5を突き、黒の陣形を崩すかパスドポーンを作ります。
  • •黒のフィアンケットされたビショップと交換するか、キングサイドの攻撃のチャンスを探ります。
  • •黒のc5やe5の突きに対して、中央を強固に守ります。
  • •d5のマスをコントロールして黒の活動を制限します。
  • •Qd2、Bh6、h4-h5のような手でキングサイドの攻撃を開始します。
  • •ロシアン・システムでは、空間の優位性を維持し、黒の反撃を制限します。

♚
Black's Plans

  • •白のd4ポーンを最大のターゲットとし、Bg7、c5、Nc6、Qa5などで圧力をかけます。
  • •c5を突いて白の中央に直接挑戦します。
  • •クイーンサイドでカウンタープレイを展開し、aファイルやbファイルを利用します。
  • •白の中央のポーンが弱点になった場合は、それを囲い込んで獲得しようとします。
  • •白の中央を崩すためのタクティクスを探ります。
  • •...b5、...a5、...Rb8でクイーンサイドのカウンタープレイを作ります。
  • •白の構造を崩す...Nxd4や...Bxc3+を含む戦術的なショットを探します。
  • •互角のエンドゲームでは、アクティブなピースを使ってパスドポーンを作ります。

Key Variations

Explore the most important branches and transpositions in the Grunfeld Defense.

Exchange Variation

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3

エクスチェンジ・バリエーションはグリュンフェルドの主要なテストであり、白は強力なポーン・センターを構築し、黒はそれを攻撃します。

Russian Variation

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3

ロシアン・システムは、白が早めにQb3をプレイしてd5に圧力をかけ、黒にポーンを諦めさせたり、不快な防御を強いたりする変化です。

4.Bg5 Variation

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5

白がBg5を展開し、f6のナイトをピンにして中央に間接的な圧力をかけるシステムです。

Bf4 System

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4

白がBc4で展開し、d5の圧力を高めるクラシカルなシステムです。

4.Nf3 Variation

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5

白がキングサイドのビショップをフィアンケットし、対称的な構造を作る堅実なアプローチです。このシステムは鋭い理論的な戦いを避けます。

g3 System

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O

白がキングサイドのビショップをフィアンケットし、対称的な構造を作る堅実なアプローチです。このシステムは鋭い理論的な戦いを避けます。

Opening Statistics

Original research from 257 real amateur games — data you won't find anywhere else.

Avg. Game Length
—awaiting data
Underdog Wins
—awaiting data
Quick Finishes
—awaiting data
Endgame Reach
—awaiting data
White's Edge
-3.8%
Favors BlackEqualFavors White

At 1200-1400

📊White's edge is 3.8% — Black actually scores better at this level.

How This Opening Changes as You Improve

RatingGamesWhite's Edge
800-100010
0.0%50 /0 /50
1000-120034
+2.9%50 /0 /47
1200-140026
-3.8%46 /0 /50
1400-160054
-7.4%46 /0 /54
1600-1800133
-8.2%43 /0 /51

Based on 257 games · Updated March 2026

Why Play the Grunfeld Defense?

ダイナミックで不均衡

グリュンフェルドは即座に不均衡を生み出し、非対称なポジションを好むプレイヤーに勝つチャンスを与えます。

アクティブなピースプレイ

黒は中央をポーンで占める代わりに、アクティブなピースの展開と中央への圧力を優先します。

ハイパーモダンの原則

遠隔から中央をコントロールするというハイパーモダンな概念を学ぶのに最適なオープニングです。

勝利のチャンス

その鋭い性質のため、グリュンフェルドはトップレベルでも黒で勝利を狙うための人気のある選択です。

Common Traps

Watch out for these dangerous tactical pitfalls

Exchange Variation Tactical Blow

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 Qc7 11.Rc1 Rd8?? 12.Nf4

白が展開を怠り、中央の維持に執着しすぎると、黒のピースが白の陣形に侵入し、致命的な攻撃につながる可能性があります。

Early Queen Trap

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Be3 Qa5?? 9.Qd2

黒が白の中央への攻撃を急ぎすぎると、白はd5の前進などで反撃し、黒の駒を押し戻すことができます。

Russian Variation Pawn Grab

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6 8.e5 b5?? 9.Qxb5

黒が白のクイーンを欲張って取ろうとすると失敗します。展開を優先すべきです。

Fianchetto Disaster

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Rb1 O-O 9.Be2 b6?? 10.d5

クイーンサイドのビショップをフィアンケットしようとする黒の試みは裏目に出ます。

Beginner Tips

💡

グリュンフェルドは理論的で複雑なオープニングです。最初は詳細なラインよりも、白の中央を攻撃するアイデアを理解することに集中してください。

💡

c5は、白の中央に挑戦するための重要なレバーです。いつ、どのように突くかを学びましょう。

💡

黒のフィアンケットされたビショップ（g7）は、最も重要な攻撃および防御の駒の一つです。

💡

エクスチェンジ・バリエーションを深く研究してください。

💡

g7のビショップは最も重要なピースです。

💡

典型的なポーン・サクリファイスを学びます。

💡

早くキャスリングしてキングの安全を確保します。

💡

ロシアン・バリエーションから始めるのも良い方法です。

Common Grunfeld patterns we detect

We automatically check if you fall for these specific traps.

About the Grunfeld Defense

The Grunfeld Defense (1. d4 Nf6 2. c4 g6 3. Nc3 d5) is a hypermodern defense where Black invites White to build a large pawn center, then attacks it with pieces and the d5 break.

We track your counterattacking precision, piece activity, and strategic understanding of when to exchange and when to maintain tension. We identify gaps in your Grunfeld knowledge.

openings.page.sections.keyThemes

中央への反撃フィアンケットダイナミックな不均衡ピースの活動性ポーンのサクリファイス戦術的な複雑さ

openings.page.sections.notablePlayers

Vasily SmyslovBobby FischerGarry KasparovPeter Svidler

Frequently Asked Questions

Common questions about Grunfeld Defense analysis

The Grünfeld Defense is reached via 1. d4 Nf6 2. c4 g6 3. Nc3 d5. Black's 3...d5 is the defining move — strikingly different from the King's Indian (where Black plays ...d6 instead). Black invites White to capture the d5 pawn with 4. cxd5 Nxd5 5. e4, building a massive pawn centre, and then fianchettoes the bishop to g7 and attacks the centre with ...c5. Named after Austrian GM Ernst Grünfeld who introduced it against Réti in Vienna in 1922.
The Exchange Variation is the most direct test of the Grünfeld. After 6. bxc3 Bg7 7. Nf3 c5, the fundamental tension is established: White has a massive pawn centre (c3-d4-e4) and the bishop pair; Black has the powerful g7 bishop hammering the long diagonal and the thematic ...c5 break attacking d4. The typical continuation 8. Rb1 O-O 9. Be2 cxd4 10. cxd4 Nc6 features one of the richest strategic battles in all chess theory.
The Russian System (4. Nf3 Bg7 5. Qb3) pressures d5 immediately with the queen. After 5...dxc4 6. Qxc4 O-O 7. e4, White achieves a strong centre without doubled c-pawns. Currently one of the most popular White systems at elite level — both Magnus Carlsen and Fabiano Caruana have employed it extensively.
The Exchange Variation Tactical Blow occurs after 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O Nc6 10. Be3 Qc7 11. Rc1 Rd8?? 12. Nf4, and after 12...Qc8, White has 13. Nxg6! hxg6 14. Bxf7+ — winning material with a devastating attack. Black should play 11...cxd4 or 11...Bg4 instead.
The Early Queen Trap occurs after 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5??. Black's premature queen sortie allows 9. Qd2, and after 9...Qxc3?? 10. Rc1, the queen is trapped. Black should develop normally with 8...O-O or 8...Nc6 before moving the queen.
Kasparov employed the Grünfeld extensively in his five World Championship matches against Karpov (1984–90). The Exchange Variation became a battleground where his brilliant preparation repeatedly created problems for Karpov's classical, positional style. In Game 16 of the 1986 match, Kasparov's attacking play in a sharp Exchange Variation overwhelmed Karpov's defences. His matchups with Karpov drove Grünfeld theory forward by years.

Famous Games

SmyslovvsDenker
USA vs USSR Radio Match 19450-1

「世紀のゲーム」と呼ばれ、13歳のボビー・フィッシャーがドナルド・バーンに対して見事なクイーン・サクリファイスと勝利を収めました。

KeresvsFischer
Candidates Tournament Curaçao 19620-1

ガルリ・カスパロフが世界選手権でグリュンフェルドを使用し、アナトリー・カルポフに対して見事な勝利を収めた有名なゲームです。

KasparovvsKarpov
World Championship Match 1986 (Game 16)1-0

マキシム・ヴァシリエ・ラグラーヴ（現代の最大のグリュンフェルドの専門家の一人）による、このオープニングのダイナミックな可能性を示す勝利です。

KramnikvsKasparov
World Championship Match 2000 (Game 2)1-0

偉大なグリュンフェルドのディフェンダーであるカスパロフが、自身のお気に入りのオープニングでクラムニクに敗れた有名な対局です。

Learning Resources

video

Grünfeld Defense Crash Course - GothamChess

course

The Grünfeld Defense: A Complete Repertoire - GM Boris Avrukh

book

The Grünfeld Defence by GM Bogdan Lalic

book

Grandmaster Repertoire: The Grünfeld by GM Boris Avrukh

course

Chess.comのオープニングエクスプローラー

Explore Related Openings

Analyze other openings similar to the Grunfeld Defense

King's Indian Defense

Are you a true King's Indian warrior? Find out if your attacking instincts translate into wins.

Analyze Now

Nimzo-Indian Defense

The opening of champions. Discover if your strategic understanding matches your ambitions.

Analyze Now

Dutch Defense

An aggressive stance against d4. See if your fighting spirit brings home the points.

Analyze Now

How valuable was this analysis?

Ready to master your openings?

Get a complete breakdown of your play across all openings, not just the Grunfeld Defense.

No credit card required • Works with Chess.com