Structure de pions

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● d5 (2v1)
Cases faibles	—	—
Centre	● e4 (1v0), ● e5 (1v0)	● d5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d, ● e	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bc4	● Bc4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● c1, ● a1, ● h1)	6 (● b8, ● g8, ● c8, ● f8, ● a8, ● h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c2-c3	● …d4-d3

C07n — French: Tarrasch, Open, Eliskases Variation

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd8 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. O-O (Mettre le roi en sécurité, connecter les tours — 85 % des parties) ; Nb3 (14 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nc6 (Développer b8 — 50 % des parties) ; ...Nf6 (Développer g8 — 22 % des parties) ; ...a6 (Préparer expansion aile dame — 21 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1932 Leningrad Ch – Round 1 – Ilyin Zhenevsky, Alexander – 1-0 – Miasoedov, Grigory – G31 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nf6 8. Nb3 Be7 9. Nbxd4 O-O 10. Qe2 Nc6
1938 Noordwijk – Round 4 – Keres, Paul Petrovich – 1/2-1/2 – Eliskases, Erich – G19 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Qe2 Be7 10. Rd1 O-O
1939 Kemeri / Riga – Round ? – Book, Eero – 0-1 – Koblencs, Alexander – G93 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nf6 8. Nb3 Nc6 9. Bg5 Be7 10. Qe2 Nd5
1941 Mar del Plata – Round 4 – Luckis, Marcos – 1-0 – Winz, Victor – G45 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Nbxd4 Nxd4 10. Nxd4 a6
1943 Prague – Round 3 – Thelen, Bedrich – 1/2-1/2 – Urbanec, Karel – G25 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Nfxd4 Nxd4 10. Qxd4 Qxd4
1945 Novi Sad – Round 19 – Tsvetkov, Alexandar K – 1/2-1/2 – Milic, Borislav – G185 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Bg5 h6 10. Bh4 Be7
1946 Maastricht – Round 8 – Prins, Laura – 1-0 – Vinken, Alex – G36 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd8 7. O-O Nf6 8. Nb3 Be7 9. Qe2 O-O 10. Nbxd4 Bd7
1948 GER Ch – Round 8 – Kieninger, Georg – 1/2-1/2 – Rellstab, Ludwig Sr – G19 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. Nb3 Nc6 8. Nfxd4 Nxd4 9. Nxd4 Nf6 10. Be3 a6
1949 Heidelberg – Round 6 – Unzicker, Wolfgang – 1/2-1/2 – Wade, Robert G – G20 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Nbxd4 Nxd4 10. Nxd4 Bc5
1950 Amsterdam – Round 1 – Rossolimo, Nicolas – 1/2-1/2 – Stahlberg, Gideon – G38 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Qe2 Be7 9. Nb3 Bf6 10. Rd1 Nge7
1950 Amsterdam – Round 14 – Kramer, Haije – 0-1 – Donner, Jan-Hein – G139 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Qe2 a6 10. Rd1 b5
1950 Amsterdam – Round 4 – Rossolimo, Nicolas – 1/2-1/2 – Stahlberg, Gideon – G61 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Be7 9. Qe2 Bf6 10. Rd1 Nge7
1950 FRG Ch 01st – Round 11 – Teschner, Rudolf – 1/2-1/2 – Schifferdecker, Wilhelm – G13 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nf6 8. Nb3 Nc6 9. Qe2 Qc7 10. Rd1 Be7
1952 DDR Ch 03rd – Round 3 – Platz, Hans – 1/2-1/2 – Koch, Berthold – G2 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Be7 9. Nbxd4 Nxd4 10. Nxd4 a6
1952 Helsinki olm – Round 1 – Smyslov, Vladimir – 1/2-1/2 – Stahlberg, Gideon – G196 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Be7 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 a6
1952 Helsinki olm – Round 1 – Szabo, Ladislav – 1/2-1/2 – Stahlberg, Gideon – G195 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Be7 9. Nbxd4 Nxd4 10. Nxd4 a6
1952 Helsinki olm – Round 9.1 – Trifunovic, Petar – 1-0 – Kaila, Osmo – G10 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O a6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Be7
1952 Hungary Ch – Round 5 – Pogats, Jozsef Jr. – 1/2-1/2 – Laszlo, Csaba – G31 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Be7 9. Nbxd4 Nxd4 10. Nxd4 a6
1952 Saltsjobaden Interzonal – Round 6 – Averbakh, Yuri L – 0-1 – Stahlberg, Gideon – G58 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Be7 9. Qe2 Bf6 10. Rd1 a6
1963 Fortaleza zt – Round 9 – Camara, Helder – 0-1 – Garcia Rodriguez, Raimundo – G49 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Nfxd4 Nxd4 10. Qxd4 Qxd4
1965 IBM II – Round 7 – Milic, Bozidar – 1/2-1/2 – Orbaan, Constant – G14 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Be7 9. Nfxd4 Nxd4 10. Nxd4 a6
34. ECC Open 2018 – Round 5.2 – Guseinov, Gadir – 0-1 – Predojevic, Borki – G152 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7
36. Olympiad 2004 – Round 7 – Nevednichy, Vladislav – 1-0 – Berkes, Ferenc – G256 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O a6 8. Qe2 Nc6 9. Rd1 Qc7 10. Nb3 Bd6
Bugojno 1982 – Round 1 – Huebner, Robert – 1/2-1/2 – Petrosian, Tigran V. – G54 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 Nf6 9. Nfxd4 Nxd4 10. Nxd4 a6
FIDE World Cup 2017 – Round 1.3 – Gonzalez Vidal, Yuri – 1/2-1/2 – Harikrishna, Pentala – G144 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd8 7. O-O a6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Qc7
FIDE World Rapid Championship 2014 – Round 13.10 – Mamedov, Rauf – 1/2-1/2 – Nguyen, Ngoc Truong Son – G48 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7
FIDE-Wch k.o. 1997 – Round 1.2 – Istratescu, Andrei – 1/2-1/2 – Chernin, Alexander – G29 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O a6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Qxd4 Qxd4 1/2-1/2
FIDE-Wch k.o. 1997 – Round 3.4 – Rublevsky, Sergei – 1/2-1/2 – Beliavsky, Alexander G – G143 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7. O-O Nc6 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7
TCh-RUS 2008 – Round 9 – Navara, David – 1/2-1/2 – Lysyj, Igor – G261 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd8 7. O-O a6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Bd6
World Rapid 2019 – Round 8.4 – Guseinov, Gadir – 1/2-1/2 – Nepomniachtchi, Ian – G524 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd8 7. O-O Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Be7

C07n — Tarrasch Variation, Eliskases Variation (1932)

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd8

Les coups candidats

7.O-O — 85.4% (1091 parties)

Ambassadeurs : Malakhatko, Vadim (22x), Kosic, Dragan (19x), Komora, Andrej (16x), Vontina, Maria (14x), Chernin, Alexander (9x), Huebner, Robert (8x), Dreev, Aleksey (7x), Nikitin, Andrey (7x)

7.Nb3 — 13.6% (174 parties)

Ambassadeurs : Nyzhnyk, Illya (3x), Franklin Samraj S (2x), Lopez Mulet, Inigo (2x), Vajda, Levente (2x), Harris, Myer (1x), Kaupert, George (1x), Meylan, Andre (1x), Planas Garcia, Francisco (1x)

7.Qe2 — 0.6% (8 parties)

Ambassadeurs : Knudsen, John C (1x), Guenter Machetanz (1x), Molyboha, Volodymyr (1x), Borsuk, Konstantin (1x), Rojicek, Vojtech (1x), Maros, Milan (1x), Plug, Arjan (1x), Ippel, Cornelius (1x)

7.Ne4 — 0.2% (3 parties)

Ambassadeurs : Weinberger, Tibor (1x), Leidner, Matthias (1x), Lane, Gary W (1x), Savchenko, Stanislav (1x), Planell, Eric (1x), Valentin, Dominique (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.O-O	7.Nb3	7.Qe2	7.Ne4
<1800	80	80%	20%	—	—
1800-2200	468	85%	14%	0%	0%
2200-2600	529	90%	9%	1%	0%
2600+	41	85%	15%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7.O-O	7.Nb3	7.Qe2	7.Ne4
1950s	21	90%	10%	—	—
1960s	15	67%	27%	—	7%
1970s	11	73%	27%	—	—
1980s	35	80%	20%	—	—
1990s	200	86%	13%	0%	0%
2000s	279	84%	15%	0%	0%
2010s	500	86%	14%	1%	—
2020s	216	89%	10%	1%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.O-O	86%	89%	▲ +3.8%
7.Nb3	14%	10%	▼ -3.9%
7.Qe2	1%	1%	+0.1%
7.Ne4	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 1 partie
Hou, Yifan — 1 partie

Parties historiques

7.O-O — 85.4% (1091 parties)

1950 — Rosholm , Andre vs Trifunovic, Petar — 1/2-1/2 — Amsterdam NED
1950 — Rossolimo, Nicolas vs Stahlberg, Gideon — 1/2-1/2 — Amsterdam NED
1950 — Rossolimo, Nicolas vs Stahlberg, Gideon — 1/2-1/2 — Amsterdam NED
1950 — Kramer, Haije vs Donner, Jan-Hein — 0-1 — Amsterdam NED
1950 — Teschner, Rudolf vs Schifferdecker, Wilhelm — 1/2-1/2 — Bad Pyrmont GER

7.Nb3 — 13.6% (174 parties)

1952 — Daksh Santosh Nathani vs Yanofsky, Harry — 1-0 — Winnipeg CAN
1953 — Cafferty, Bernard vs Burbidge, AG. — 1/2-1/2 — ?
1964 — Harris, Myer vs Kaupert, George — 1-0 — Hamilton CAN
1965 — Meylan, Andre vs Planas Garcia, Francisco — 1/2-1/2 — Cuba
1965 — Learner, Abraham Emanuel vs Collins, Richard — 0-1 — Hayes

7.Qe2 — 0.6% (8 parties)

1996 — Knudsen, John C vs Guenter Machetanz — 1-0 — Osthofen VM #1
2005 — Molyboha, Volodymyr vs Borsuk, Konstantin — 1-0 — Kiev UKR
2012 — Rojicek, Vojtech vs Maros, Milan — 1-0 — Slovakia SVK
2015 — Plug, Arjan vs Ippel, Cornelius — 1-0 — Vale GCI
2018 — Giron, Jorge Ernesto vs Palencia Alvarado, Julio Roberto — 1-0 — San Jose CRC

7.Ne4 — 0.2% (3 parties)

1962 — Weinberger, Tibor vs Leidner, Matthias — 0-1 — Fresno, CA
1994 — Lane, Gary W vs Savchenko, Stanislav — 0-1 — Londen open
2007 — Planell, Eric vs Valentin, Dominique — 1-0 — France

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