Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● f7→e6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● e5 (2v1), ● g5 (2v0)	● b4 (2v1), ● d5 (2v1)
Cases faibles	● d4	● c5
Centre	● e5 (2v1)	● d5 (2v1), ● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 2)
Bd7		● Bd7 Mauvais (mob. 1)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	3 (● f8, ● a8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Au centre
Droits de roque	—	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● d4-d5	● …e6-e5

E04r — Catalan: Open, 5.Nf3 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4 b5

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4 b5 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Qd3 (Centraliser la dame — 86 % des parties) ; Qc3 (Centraliser la dame — 12 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Rc8 (43 % des parties) ; ...b4 (Expansion aile dame — 7 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
11. Norway Chess 2023 – Round 7.5 – Giri, Anish – 1-0 – Aditya Tari – G35 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qc2 Rc8
1949 GBR Ch 36th – Round 4.4 – Abrahams, Gerald – 0-1 – Horne, Dennis Morton – G14 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Be7
1951 YUG Ch 7th – Round 1 – Ivkov, Borislav – 1/2-1/2 – Janosevic, Dragoljub – G8 1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. O-O Nc6 5. d4 e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8
1959 Mar del Plata – Round 1 – Rossetto, Hector – 1/2-1/2 – Ivkov, Borislav – G24 1. d4 e6 2. Nf3 c5 3. g3 Nf6 4. Bg2 Nc6 5. O-O d5 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. dxc5 Bxc5
1961 OWL Ch – Round 10 – Galle, Ernst – 0-1 – Lachmann, Hans G – G14 1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Bg2 c5 5. c4 dxc4 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. Nc3 c4
1961 Warsaw – Round 1 – Drozd, Ryszard – 1-0 – Tolush, Alexander – G75 1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. O-O Nc6 5. d4 e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8
1961 WchT U26 08th – Round 12.2 – Popov, Vladimir – 0-1 – Baumbach, Friedrich, Dr. – G112 1. d4 d5 2. Nf3 c5 3. c4 e6 4. g3 Nc6 5. Bg2 Nf6 6. O-O dxc4 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. dxc5 Bxc5
1963 Hoogovens – Round 12 – Trifunovic, Petar – 1/2-1/2 – Gereben, Erno – G96 1. d4 Nf6 2. Nf3 c5 3. c4 e6 4. g3 d5 5. Bg2 dxc4 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. dxc5 Bxc5
1966 Hastings6667 – Round 9 – Basman, Michael J – 1/2-1/2 – Czerniak, Magdalena – G42 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8
1968 New York ch-USA – Round 3 – Weinberger, Tibor – 0-1 – Horowitz, Albert Israel – G18 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8
1968 Ybbs – Round 1 – Vukic, Maroje – 1-0 – Pfleger, Helmut, Dr. – G4 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qc2 Rc8
20. European Teams 2015 – Round 3.10 – Stefansson, Hannes – 1/2-1/2 – Nisipeanu, Liviu-Dieter – G113 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qc2 Rc8
43. Olympiad 2018 – Round 11.3 – Wojtaszek, Radoslaw – 1/2-1/2 – Harikrishna, Pentala – G738 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qc3 b4 10. Qd3 Rc8
Buenos Aires 1980 – Round 1 – Balashov, Yuri S – 0-1 – Ljubojevic, Ljubomir – G13 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. dxc5 Bxc5
FIDE GP Paris 2013 – Round 7.5 – Tomashevsky, Evgeny – 1/2-1/2 – Wang, Hao(ZJWZ) – G41 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qc2 Be7
FIDE Grand Prix 3 Pool A 2022 – Round 6.1 – Oparin, Grigoriy – 1-0 – Aronian, Levon – G11 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8
FIDE World Cup 2017 – Round 2.2 – Sethuraman, S.P. – 1/2-1/2 – Harikrishna, Pentala – G249 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qc3 b4 10. Qd3 Rc8
FIDE World Rapid 2014 – Round 9.19 – Ragger, Markus – 0-1 – Adly, Ahmed – G177 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. dxc5 Bxc5
FTX Crypto Cup 2022 – Round 3.5 – Giri, Anish – 1/2-1/2 – Firouzja, Alireza – G48 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qc3 b4 10. Qd3 Rc8
Saint Louis Blitz 2022 – Round 11.5 – Shankland, Sam – 0-1 – Nepomniachtchi, Ian – G55 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qc3 b4 10. Qd3 cxd4
Saint Louis Blitz 2022 – Round 15.3 – Shankland, Sam – 0-1 – Firouzja, Alireza – G73 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qc3 b4 10. Qd3 cxd4
USSR 1984 – Round 1 – Vladimirov, Yevgeniy – 1/2-1/2 – Shereshevski, Mikhail – G3 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. dxc5 Bxc5
Wijk aan Zee NED, Tata Steel GpA 2015 – Round 2.1 – Van Wely, Loek – 1/2-1/2 – Wojtaszek, Radoslaw – G2 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8
World Blitz 2016 – Round 15.17 – Mchedlishvili, Mikheil – 1-0 – Adly, Ahmed – G590 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qc3 Nd5 10. Qd2 Rc8
World Rapid 2021 – Round 2.8 – Dubov, Daniil – 1/2-1/2 – Fridman, Daniel – G129 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8
World Rapid 2021 – Round 5.62 – Piorun, Kacper – 1/2-1/2 – Holm, Kristian Stuvik – G307 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qc3 b4 10. Qd3 Rc8
Zuerich Chess Challenge 2013 – Round 5.1 – Gelfand, Boris – 1/2-1/2 – Anand, Viswanathan – G9 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 c4 10. Qd1 Rc8

E04r — Open (1949)

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4 b5

Les coups candidats

9.Qd3 — 85.7% (1182 parties)

Ambassadeurs : Sokolov, Andrei (9x), Inkiov, Ventzislav (8x), Volodin, Viktor (8x), Radulov, Ivan (7x), Vladimirov, Yevgeniy (5x), Haba, Petr (5x), Ivkov, Borislav (3x), Smejkal, Jan (3x)

9.Qc3 — 11.7% (161 parties)

Ambassadeurs : Kazakouski, Valery (3x), Sodoma, Jan (2x), Naiditsch, Arkadij (2x), Manko, Mariia (2x), Shankland, Sam (2x), Firouzja, Alireza (2x), Nichols, Sam (1x), Basanta, Gary (1x)

9.Qb3 — 1.1% (15 parties)

Ambassadeurs : Vrijbloed (1x), Leek, John (1x), Garancovsky, Pavol (1x), Slapak, Zdenek (1x), Taksrud, Vidar (1x), Glenne, Bjorn Erik (1x), Alonso Perez, Jose Ramon (1x), Acebal Muniz, Antonio (1x)

9.Qxb5 — 0.9% (12 parties)

Ambassadeurs : Bleis, Christian, Prof. Dr. (1x), Sonntag, Hans-Hubert (1x), Hodgson, Julian M (1x), Karolyi, Tibor (1x), Cortegoso, Martin (1x), Monier, Raul (1x), Konik, Michael, Dr. (1x), Mueller, Maximilian (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.Qd3	9.Qc3	9.Qb3	9.Qxb5
<1800	51	84%	8%	2%	—
1800-2200	481	87%	9%	2%	1%
2200-2600	684	86%	13%	1%	1%
2600+	56	59%	41%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.Qd3	9.Qc3	9.Qb3	9.Qxb5
1950s	4	100%	—	—	—
1960s	12	100%	—	—	—
1970s	11	82%	18%	—	—
1980s	106	95%	2%	1%	2%
1990s	119	96%	1%	3%	—
2000s	210	93%	2%	1%	1%
2010s	568	87%	10%	1%	1%
2020s	350	71%	27%	1%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.Qd3	87%	71%	▼ -15.9%
9.Qc3	10%	27%	▲ +16.8%
9.Qb3	1%	1%	-0.0%
9.Qxb5	1%	1%	-0.3%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 2 parties
Ju, Wenjun — 2 parties
Ding, Liren — 1 partie

Parties historiques

9.Qd3 — 85.7% (1182 parties)

1951 — Ivkov, Borislav vs Janosevic, Dragoljub — 1/2-1/2 — Sarajevo BIH
1951 — Lachmann, Hans G vs Hantke, Rolf — 1/2-1/2 — Minden
1956 — Krznaric, Luka vs Di Camillo, Attilio — 1/2-1/2 — Montreal CAN
1959 — Rossetto, Hector vs Ivkov, Borislav — 1/2-1/2 — Mar del Plata ARG
1960 — Bolbochan, Julio vs Letelier Martner, Rene — 1-0 — Sao Paulo BRA

9.Qc3 — 11.7% (161 parties)

1971 — Meo, Alberto Maria vs Tatai, Igor — 0-1 — Rome ITA
1979 — Ftacnik, Lubomir vs Petran, Peter — 1-0 — Dolny Kubin
1986 — Nichols, Sam vs Basanta, Gary — 0-1 — Victoria CAN
1986 — Weitthoff, J. vs Schulien, Charles — 0-1 — Ohio Congress
1999 — Terzic, Safet vs Stoer, Andreas — 1-0 — Bayern

9.Qb3 — 1.1% (15 parties)

1988 — Vrijbloed vs Leek, John — 1/2-1/2 — corr Netherlands
1991 — Alonso Perez, Jose Ramon vs Acebal Muniz, Antonio — 0-1 — Aviles ESP
1991 — Lauridsen, Benny vs Pedersen, Nicolai Vesterbaek — 0-1 — Aarhus DEN
1992 — Garancovsky, Pavol vs Slapak, Zdenek — 0-1 — Czechoslovakia
1994 — Taksrud, Vidar vs Glenne, Bjorn Erik — 1/2-1/2 — Norway

9.Qxb5 — 0.9% (12 parties)

1988 — Bleis, Christian, Prof. Dr. vs Sonntag, Hans-Hubert — 0-1 — Karlsruhe GER tt NRW
1988 — Hodgson, Julian M vs Karolyi, Tibor — 1/2-1/2 — Kecskemet HUN
2003 — Cortegoso, Martin vs Monier, Raul — 0-1 — Mendoza ARG
2003 — Konik, Michael, Dr. vs Mueller, Maximilian — 0-1 — Griesheim
2007 — Skwarnicki, Adam vs Goslawski, Michal — 1-0 — Rewal

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