E09n — Catalan: Closed, Main Line, 9.e4 Bb7 10.b3

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2 b6 9.e4 Bb7 10.b3 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e5, paire de fous.
Faiblesses adverses : Bb7 enfermé.
Problèmes : Bc1 enfermé, Bg2 enfermé, arriéré f2.
Plans :
● Bg5 — Clouer Nf6

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : Be7 actif, paire de fous.
Faiblesses adverses : arriéré f2, Bc1 enfermé, Bg2 enfermé.
Problèmes : Bb7 enfermé.
Plans :
● ...Bg4 — Clouer Nf3
● ...c5 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E09n — Closed Main Line

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2 b6 9.e4 Bb7 10.b3

Eval: [-0.07]

Les coups candidats

10…Rc8 — 64.5% (264 parties)

Ambassadeurs : Karaklajic, Nikola (5x), Donchenko, Anatoly (4x), Gebuhr, Guenter (3x), Krasenkow, Michal (3x), Hansen, Curt (3x), Udovcic, Mijo (2x), Porreca, Giorgio (2x), Quinteros, Miguel A. (2x)

10…dxe4 — 21.0% (86 parties)

Ambassadeurs : Bondarevsky, Igor (2x), Overesch, Andre (2x), Sajtar (1x), Szabo, Ladislav (1x), Laszlo, Csaba (1x), Shaitar, Ya (1x), Sowinski, Jerzy (1x), Sliwa, Bogdan (1x)

10…c5 — 5.9% (24 parties)

Ambassadeurs : Petrov, Vladimirs (1x), Ilivitsky, Georgy A (1x), Bilek, Istvan (1x), Van Scheltinga, Theo (1x), Nielsen, Hartvig (1x), Poulsen, Christian (1x), Tatai, Stefano (1x), Lanzani, Mario Lorenzo (1x)

10…Nxe4 — 4.4% (18 parties)

Ambassadeurs : Chanda, Sandipan (2x), Duindam, Simon (1x), Hotting, Arend (1x), Eretova, Kveta (1x), Hund, Barbara (1x), Velikov, Petar (1x), Nikolic, Zivoslav (1x), Wilhelmi, Christian (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10…Rc8	10…dxe4	10…c5	10…Nxe4
<1800	7	86%	—	14%	—
1800-2200	103	57%	31%	5%	6%
2200-2600	207	67%	18%	6%	5%
2600+	6	67%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	10…Rc8	10…dxe4	10…c5	10…Nxe4
1940s	6	17%	50%	17%	—
1950s	8	75%	12%	12%	—
1960s	7	57%	—	14%	—
1970s	15	73%	—	7%	7%
1980s	39	72%	15%	5%	5%
1990s	89	70%	19%	3%	3%
2000s	115	66%	22%	5%	5%
2010s	112	62%	24%	7%	3%
2020s	18	33%	39%	6%	17%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10…Rc8	62%	33%	▼ -29.2%
10…dxe4	24%	39%	▲ +14.8%
10…c5	7%	6%	▼ -1.6%
10…Nxe4	3%	17%	▲ +14.0%

Parties historiques

10…Rc8 — 64.5% (264 parties)

1948 — Barcza, Gedeon vs Gligorić, Svetozar — 1/2-1/2 — Budapest HUN
1950 — Golombek, Harry vs Mueller, Helge — 1-0 — Venice ITA
1950 — Macskasy, Elod vs Gereben, Erno — 1-0 — Budapest HUN
1951 — Udovcic, Mijo vs Andric, Dragoslav — 0-1 — Ljubljana
1954 — Porreca, Giorgio vs Karaklajic, Nikola — 0-1 — Belgrade SRB

10…dxe4 — 21.0% (86 parties)

1946 — Sajtar vs Bondarevsky, Igor — 1/2-1/2 — Moscow-Prague tt
1946 — Shaitar, Ya vs Bondarevsky, Igor — 1/2-1/2 — Prague CZE
1947 — Szabo, Ladislav vs Laszlo, Csaba — 1-0 — Budapest HUN
1952 — Sowinski, Jerzy vs Sliwa, Bogdan — 0-1 — Katowice POL
1980 — Korchnoi, Viktor vs Riedl, Helmut — 1-0 — Wuerzburg

10…c5 — 5.9% (24 parties)

1942 — Petrov, Vladimirs vs Ilivitsky, Georgy A — 1-0 — Sverdlovsk
1958 — Nielsen, Hartvig vs Poulsen, Christian — 1-0 — Herning
1960 — Bilek, Istvan vs Van Scheltinga, Theo — 1/2-1/2 — Berg en Dal B
1976 — Loftsson, Julius H vs Miller, Todd — 1-0 — Phoenix op Phoenix, AZ USA
1984 — Greenfeld, Alon vs Liberzon, Vladimir M — 1/2-1/2 — Beer Sheba ISR

10…Nxe4 — 4.4% (18 parties)

1979 — Eretova, Kveta vs Hund, Barbara — 1-0 — Rio de Janeiro BRA
1982 — Velikov, Petar vs Nikolic, Zivoslav — 1/2-1/2 — Vrnjacka Banja SRB
1988 — Duindam, Simon vs Hotting, Arend — 0-1 — corr Netherlands
1991 — Wilhelmi, Christian vs Proehl, Holger — 1/2-1/2 — Magdeburg ch-U15 GER
1992 — Velasco Gonzalez, Julio vs Reig Albero, Ferran — 0-1 — Ponferrada

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● f2	—
Chaînes	● a2→b3, f2→g3, h2→g3, b3→c4	● c6→d5, e6→d5, a7→b6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v1)	—
Cases faibles	● e4	—
Centre	● d4 (1v0), ● e5 (2v1)	● d5 (3v2)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 2)
Bg2	● Bg2 Enfermé (mob. 2)
Bb7		● Bb7 Enfermé (mob. 2)
Be7		● Be7 Actif (mob. 4)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	1 (a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5, ● e4-e5	● …c6-c5, ● …e6-e5

Partie
1942 Sverdlovsk – Round 8 – Petrov, Vladimirs – 1-0 – Ilivitsky, Georgy A – G41 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O c6 7. Qc2 b6 8. Nbd2 Bb7 9. e4 Nbd7 10. b3 c5
1946 Moscow-Prague tt – Round 2 – Sajtar – 1/2-1/2 – Bondarevsky, Igor – G4 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 c6 6. Nbd2 Be7 7. Qc2 O-O 8. O-O b6 9. e4 Bb7 10. b3 dxe4
1946 Prague – Round 1 – Shaitar, Ya – 1/2-1/2 – Bondarevsky, Igor – G15 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Nbd7 5. Bg2 Be7 6. O-O O-O 7. Nbd2 c6 8. Qc2 b6 9. e4 Bb7 10. b3 dxe4
1947 Hungary – Round 1 – Szabo, Ladislav – 1-0 – Laszlo, Csaba – G12 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O c6 7. Qc2 b6 8. Nbd2 Bb7 9. b3 Nbd7 10. e4 dxe4
1949 Moscow Ch – Round 1 – Lilienthal, Andor – 1-0 – Simagin, Vladimir – G5 1. d4 d5 2. c4 e6 3. Nf3 c6 4. Qc2 Nf6 5. g3 Be7 6. Bg2 O-O 7. O-O b6 8. Nbd2 Bb7 9. e4 Nbd7 10. b3 Re8
1952 POL-ch10 – Round 15 – Sowinski, Jerzy – 0-1 – Sliwa, Bogdan – G113 1. Nf3 Nf6 2. g3 d5 3. Bg2 Nbd7 4. d4 e6 5. O-O Be7 6. c4 O-O 7. b3 c6 8. Qc2 b6 9. Nbd2 Bb7 10. e4 dxe4
1954 Belgrade – Round 1 – Porreca, Giorgio – 0-1 – Karaklajic, Nikola – G6 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. Nbd2 Be7 7. O-O O-O 8. Qc2 b6 9. e4 Bb7 10. b3 Rc8
1954 Belgrade – Round 2 – Porreca, Giorgio – 0-1 – Karaklajic, Nikola – G35 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. Nbd2 Be7 7. O-O O-O 8. Qc2 b6 9. e4 Bb7 10. b3 Rc8
1958 Herning – Round 1 – Nielsen, Hartvig – 1-0 – Poulsen, Christian – G5 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 Be7 6. Ngf3 Nbd7 7. O-O O-O 8. Qc2 b6 9. e4 Bb7 10. b3 c5
1964 POL-ch21 Warsaw POL – Round 11 – Doda, Alvin – 1-0 – Kostro, Jerzy – G28 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. d4 Nbd7 7. Qc2 c6 8. Nbd2 b6 9. e4 Bb7 10. b3 Re8
Interpolis 1978 – Round 1 – Ribli, Zoltan – 1/2-1/2 – Larsen, Bent – G2 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. O-O O-O 6. d4 c6 7. Nbd2 Nbd7 8. Qc2 b6 9. e4 Bb7 10. b3 a5