E19p — Queen’s Indian: Old Main Line, 9.Qxc3 c5 10.Rd1 d6 11.b3 Bf6 12.Bb2 Qe7

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3 c5 10.Rd1 d6 11.b3 Bf6 12.Bb2 Qe7 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Jeu au centre (rupture d4-d5).

Atouts. Les Blancs s'appuient sur la paire de fous.

Côté adverse. Un mauvais fou en f6.

Plans. h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Jeu au centre (rupture d6-d5).

Atouts. Les Noirs s'appuient sur des fous actifs en f6 et b7 et la paire de fous.

Côté adverse. Le fou enfermé en b2.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b8 et la tour a8).

Plans. ...Nbd7 (Développer Nb8) ; ...d5 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● a2→b3, f2→g3, h2→g3, b3→c4	● b6→c5, d6→c5, a7→b6, f7→e6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bb2	● Bb2 Enfermé (mob. 2)
Bg2	● Bg2 Ok (mob. 3)
Bf6		● Bf6 Actif (mob. 4)
Bb7		● Bb7 Actif (mob. 6)
Paire de fous	● Oui	● Oui
Non développées	1 (● a1)	2 (● b8, ● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d4-d5, ● e2-e3	● …d6-d5, ● …e6-e5

Partie
1968 Lugano olm – Round 8 – Ivkov, Borislav – 0-1 – Korchnoi, Viktor – G5 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
1968 Palma de Mallorca – Round 12 – Gheorghiu, Florin – 0-1 – Korchnoi, Viktor – G106 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
1970 Palma de Mallorca Interzonal – Round 3 – Ivkov, Borislav – 1/2-1/2 – Polugaevsky, Lev – G115 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
1971 Hoogovens – Round 2 – Ivkov, Borislav – 1-0 – Najdorf, Miguel – G36 1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. d4 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
Bugojno 1980 – Round 7 – Timman, Jan H – 1/2-1/2 – Andersson, Ulf 1949 – G29 1. Nf3 Nf6 2. d4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
Candidats Tournament 1985 – Round 10 – Tal, Mikhail – 1/2-1/2 – Timman, Jan H – G61 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
Interpolis 1978 – Round 11 – Hort, Vlastimil – 1/2-1/2 – Timman, Jan H – G42 1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
La Valetta MLT 1980 – Round 10 – Timman, Jan H – 1/2-1/2 – Portisch, Lajos – G14 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
Leningrad ch-URS 1977 – Round 1 – Petrosian, Tigran V. – 1/2-1/2 – Smyslov, Vassily – G14 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. c4 e6 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
Manila Interzonal 1976 – Round 17 – Hort, Vlastimil – 1/2-1/2 – Balashov, Yuri S – G73 1. c4 Nf6 2. Nf3 e6 3. d4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
OHRA 1986 – Round 1 – Vaganian, Rafael A – 1/2-1/2 – Ribli, Zoltan – G18 1. Nf3 Nf6 2. g3 b6 3. d4 e6 4. Bg2 Bb7 5. c4 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6
Optiebeurs 1988 – Round 3 – Timman, Jan H – 1/2-1/2 – Van der Wiel, John T.H. – G13 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6

E19p — Old Main Line

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3 c5 10.Rd1 d6 11.b3 Bf6 12.Bb2 Qe7

Les coups candidats

13.Qc2 — 71.8% (450 parties)

Ambassadeurs : Timman, Jan H (8x), Ilyasov, Anatoly Fedorovich (7x), Kratochvíl, Václav (6x), Vaganian, Rafael A (5x), Kýhos, Alois (5x), Jones, Brian (5x), Pérez López, Alberto (5x), Langer, Raimund (5x)

13.Qd2 — 14.4% (90 parties)

Ambassadeurs : Ivkov, Borislav (3x), Gheorghiu, Florin (3x), Korchnoi, Viktor (2x), Csom, Istvan (2x), Ribli, Zoltan (2x), Piccoli, Fábio Bidart (2x), Sosenkov, Leonid Andreevich (2x), Sokolov, Evgeny Albertovich (2x)

13.Qe3 — 5.1% (32 parties)

Ambassadeurs : Pheby, Ian M (3x), Schneider, Karl (3x), Petraitis, Gintautas (2x), Ree, Hans (1x), Andersson, Ulf (1x), Petrosian, Tigran A. (1x), Smyslov, Vladimir (1x), Rodgaard, John (1x)

13.Rd2 — 3.8% (24 parties)

Ambassadeurs : Kühne, Ralf (3x), Timman, Jan H (2x), Sanz Alonso, Francisco Javier (2x), Meiners, Edwin (2x), Plachetka, Jan (1x), Klinger, Josef (1x), Sokolowski, Marek (1x), Karlsson, Bjorn-Ivar (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	13.Qc2	13.Qd2	13.Qe3	13.Rd2
<1800	7	100%	—	—	—
1800-2200	202	76%	11%	5%	2%
2200-2600	309	70%	15%	6%	5%
2600+	19	63%	21%	5%	11%

Évolution par décennie (% des parties)

Décennie	N parties	13.Qc2	13.Qd2	13.Qe3	13.Rd2
1960s	2	—	100%	—	—
1970s	43	67%	21%	2%	9%
1980s	30	70%	17%	3%	10%
1990s	41	73%	22%	2%	2%
2000s	118	69%	19%	3%	4%
2010s	364	74%	10%	7%	3%
2020s	29	62%	14%	3%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
13.Qc2	74%	62%	▼ -12.1%
13.Qd2	10%	14%	▲ +3.4%
13.Qe3	7%	3%	▼ -3.4%
13.Rd2	3%	0%	▼ -3.0%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 2 parties
Tal, Mikhail — 2 parties
Smyslov, Vladimir — 1 partie
Kramnik, Vladimir — 1 partie

Parties historiques

13.Qc2 — 71.8% (450 parties)

1970 — Ivkov, Borislav vs Polugaevsky, Lev — 1/2-1/2 — Palma de Mallorca izt
1970 — Filip, Marius Liviu vs Korchnoi, Viktor — 0-1 — Siegen olm
1972 — Onat, Ilhan vs Williams, A. Howard — 1/2-1/2 — Skopje MKD
1974 — Rukavina, Josip vs Gulko, Boris — 0-1 — Sombor
1976 — Hort, Vlastimil vs Balashov, Yuri — 1/2-1/2 — Manila PHI

13.Qd2 — 14.4% (90 parties)

1968 — Ivkov, Borislav vs Korchnoi, Viktor — 0-1 — 18th Olympiad final A
1968 — Gheorghiu, Florin vs Korchnoi, Viktor — 0-1 — Palma de Majorca ESP
1970 — O'Kelly de Galway, Alberic vs Hecht, Hans-Joachim — 1/2-1/2 — Bad Pyrmont GER
1971 — Ivkov, Borislav vs Najdorf, Miguel — 1-0 — Wijk aan Zee NED
1971 — Ivkov, Borislav vs Portisch, Lajos — 1/2-1/2 — Amsterdam NED

13.Qe3 — 5.1% (32 parties)

1977 — Petrosian, Tigran A. vs Smyslov, Vladimir — 1/2-1/2 — Leningrad ch-URS
1981 — Ree, Hans vs Andersson, Ulf — 1/2-1/2 — Wijk aan Zee NED
1996 — Rodgaard, John vs Pilgaard, Kim — 1/2-1/2 — Aarhus Kebmandsskole Cup
2004 — Kulvietis, Marijus vs Novikovas, Anatolijus — 1/2-1/2 — ICCF
2007 — Becker, Cindy vs Van Dries, Conny — 1/2-1/2 — ICCF

13.Rd2 — 3.8% (24 parties)

1976 — Hort, Vlastimil vs Korchnoi, Viktor — 1/2-1/2 — Hastings ENG
1976 — Weiman Hort, Valentin vs Kortchnoi, V. — 1/2-1/2 — Hastings ENG
1978 — Timman, Jan H vs Sanz Alonso, Francisco Javier — 1-0 — Amsterdam NED
1978 — Timman, Jan H vs Sanz Alonso, Francisco Javier — 1-0 — Amsterdam NED
1985 — Sokolowski, Mieczysla vs Karlsson Bertil — 1/2-1/2 — ?