C04i — French: Tarrasch, Guimard, Main Line, 6.Nb3 a5

1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6 5.e5 Nd7 6.Nb3 a5 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. a4 (94 % des parties) ; Bf4 (Fou actif (mobilité 6), Développer c1 — 2 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Be7 (Fou actif (mobilité 8), Développer f8 — 52 % des parties) ; ...b6 (Préparer le fianchetto — 40 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● d4→e5	● e6→d5, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v1)	● b4 (3v0)
Cases faibles	—	● c5, ● e5
Centre	● d4 (3v1)	● d5 (1v0), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 5)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (● c1, ● f1, ● a1, ● h1)	4 (● 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	fermé
Ruptures	● c2-c4	● …f7-f6

Partie
1957 WchT U26 04th – Round 7.4 – Bogdanov, Emil – 1/2-1/2 – Haag, Ervin – G99 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. Bb5 Bb7 9. O-O Be7 10. Re1 O-O
1958 Munich olm fin-B – Round 10 – Portisch, Lajos – 1/2-1/2 – Thorbergsson, Freysteinn – G47 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 Be7 8. Bb5 Ncb8 9. O-O b6 10. Ne1 h5
1958 Munich olm prel – Round 3 – Koskinen, Heikki – 1/2-1/2 – Thorbergsson, Freysteinn – G77 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. c3 Be7 9. Bd3 Ba6 10. Bxa6 Rxa6
1959 Asztalos Memorial – Round 6 – Florian, Tibor – 1-0 – Haag, Ervin – G27 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. Bb5 Na7 9. Bd3 c5 10. c4 Be7
1966 La Habana olm fin-A – Round 13 – Matanovic, Aleksandar – 1-0 – Thorbergsson, Freysteinn – G251 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. Bb5 Ncb8 9. O-O Be7 10. Re1 O-O
1968 Alma Ata ch-URS – Round 1 – Averbakh, Yuri L – 0-1 – Zaitsev, Alexander – G31 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 Be7 8. h4 b6 9. Bg5 h6 10. Bxe7 Nxe7
1968 POL Ch 25th – Round 12 – Grabczewski, Romuald – 1-0 – Pytel, Krzysztof – G73 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. Bb5 Na7 9. Be2 c5 10. O-O c4
1968 Reykjavik – Round 1 – Bech Johansson, Amadeus – 1/2-1/2 – Thorbergsson, Freysteinn – G67 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 Be7 8. Bb5 Ncb8 9. O-O b6 10. Qe2 O-O
1968 Reykjavik – Round 1 – Ostojic, Predrag – 1-0 – Thorbergsson, Freysteinn – G66 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 Be7 8. Bb5 Ncb8 9. O-O b6 10. Qe2 O-O
40. Olympiad Open 2012 – Round 10.23 – Amonatov, Farrukh – 1-0 – Cori, Jorge – G558 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. Bb5 Na7 9. Be2 c5 10. c3 Nc6
41. Olympiad Open 2014 – Round 4.19 – Shankland, Sam – 1-0 – Gluckman, David – G265 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 Be7 8. c3 b6 9. h4 h6 10. Rh3 Ba6
Montreal 1979 – Round 2 – Huebner, Robert – 1-0 – Larsen, Bent – G10 1. d4 e6 2. e4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. c3 Be7 9. Bd3 Ba6 10. Bxa6 Rxa6
OHRA 1984 – Round 3 – Chandler, Murray G – 0-1 – Timman, Jan H – G7 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. Bf4 Be7 8. h4 h6 9. Rh3 b6 10. Rg3 Bf8
SportAccord Blitz Men 2012 – Round 12.2 – Giri, Anish – 1/2-1/2 – Nakamura, Hikaru – G88 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. Bb5 Ncb8 9. O-O Be7 10. c3 c5
Tournament of Stars 1979 – Round ? – Huebner, Robert – 1-0 – Larsen, Bent – G13 1. d4 e6 2. e4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5 7. a4 b6 8. c3 Be7 9. Bd3 Ba6 10. Bxa6 Rxa6

C04i — Tarrasch, Guimard, Main Line (1957)

1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6 5.e5 Nd7 6.Nb3 a5

Les coups candidats

7.a4 — 93.8% (817 parties)

Ambassadeurs : Ortiz Galvan, Manuel Eliu (15x), Drasko, Milan (14x), Skorna, Ullrich (12x), Prie, Eric (8x), Thorbergsson, Freysteinn (7x), Meinhardt, Maximilian, Dr. (6x), Sahovic, Dragutin (5x), Knudsen, John C (5x)

7.Bf4 — 2.5% (22 parties)

Ambassadeurs : Bernard, Ryszard (2x), Bednarski, Jacek (2x), Timman, Jan H (2x), Haas, Frank-Martin, Dr. (2x), Ferguson, Mark (2x), Drasko, Milan (1x), Kislov, Mikhail (1x), Doroshkievich, Vladimir K (1x)

7.Bg5 — 1.3% (11 parties)

Ambassadeurs : Chery, Eric (2x), Barbulescu, Dan (1x), Drasko, Milan (1x), Mary, Patrick (1x), Glemot Thierry (1x), Lafeuille, Bernard (1x), Haffner, Leon (1x), Guimaraes, Rui (1x)

7.Bb5 — 0.8% (7 parties)

Ambassadeurs : Voronova, Tatiana (1x), Grinfeld, Alla B (1x), Jaros, Bohumil (1x), Fiala, Jaroslav (1x), Kuzmin, Gennadi (1x), Panchenko, Alexander N (1x), Gruzmann, Boris (1x), Skorna, Ullrich (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.a4	7.Bf4	7.Bg5	7.Bb5
<1800	27	96%	—	—	—
1800-2200	292	94%	2%	1%	0%
2200-2600	456	95%	2%	1%	1%
2600+	9	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7.a4	7.Bf4	7.Bg5	7.Bb5
1950s	7	100%	—	—	—
1960s	6	100%	—	—	—
1970s	29	86%	7%	—	7%
1980s	99	86%	9%	1%	1%
1990s	105	90%	3%	3%	4%
2000s	182	95%	2%	2%	—
2010s	362	96%	1%	1%	—
2020s	81	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.a4	96%	100%	▲ +4.4%
7.Bf4	1%	0%	▼ -1.1%
7.Bg5	1%	0%	▼ -1.1%
7.Bb5	0%	0%	+0.0%

Parties historiques

7.a4 — 93.8% (817 parties)

1953 — Koch, Berthold vs Bruechner, Siegfried — 1-0 — Jena ch DDR
1957 — Bronstein, David I vs Gusev, Yuri S — 1-0 — Moscow RUS
1957 — Bogdanov, Emil vs Haag, Ervin — 1/2-1/2 — Reykjavik ISL
1958 — Portisch, Lajos vs Thorbergsson, Freysteinn — 1/2-1/2 — Munchen olm
1958 — Kopilov, Nikolay Georgiyevich vs Uusi, Gunnar — 1-0 — Rostov on Don

7.Bf4 — 2.5% (22 parties)

1973 — Bernard, Ryszard vs Bednarski, Jacek — 0-1 — Lublin POL
1973 — Bernard, Ryszard vs Bednarski, Jacek — 0-1 — Lublin POL
1983 — Hurdle, Alan vs Carleton, John J — 1-0 — ?
1984 — Timman, Jan H vs Drasko, Milan — 1-0 — Sarajevo (Bosnia & Herzegovin
1984 — Chandler, Murray G vs Timman, Jan H — 0-1 — Amsterdam NED

7.Bg5 — 1.3% (11 parties)

1982 — Barbulescu, Dan vs Drasko, Milan — 1/2-1/2 — Plovdiv BUL
1995 — Glemot Thierry vs Lafeuille, Bernard — 1-0 — ?
1996 — Mary, Patrick vs Chery, Eric — 1/2-1/2 — AJEC/1239 corr
1997 — Haffner, Leon vs Chery, Eric — 1/2-1/2 — ?
2000 — Liwak, Przemyslaw vs Kleeschaetzky, Rainer — 1/2-1/2 — GER

7.Bb5 — 0.8% (7 parties)

1975 — Kuzmin, Gennadi vs Panchenko, Alexander N — 1-0 — Kishinev MDA
1979 — Voronova, Tatiana vs Grinfeld, Alla B — 1-0 — Tbilisi GEO
1989 — Jaros, Bohumil vs Fiala, Jaroslav — 0-1 — corr CSSR
1993 — Spangenberg, Hugo vs Reides, Marcelo — 1-0 — Buenos Aires ARG
1994 — Ena, Alessio vs Bernad Suarez, Antonio — 0-1 — E VI CEAPE corr

Fin du contenu

Aucune page supplémentaire à charger

Articles plus anciens →