E12i — Queen’s Indian: Petrosian, 4…Ba6 5.Qc2 Bb7 6.Nc3 c5 7.e4 cd 8.Nxd4 Nc6

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Ba6 5.Qc2 Bb7 6.Nc3 c5 7.e4 cxd4 8.Nxd4 Nc6 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nxc6 (Menace d8 — 96 % des parties) ; Nb3 (3 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Bc5 (Fou actif (mobilité 6), Développer f8 — 1 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3	● a7→b6, d7→e6, f7→e6
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (3v0)	● c5 (2v0)
Cases faibles	—	—
Centre	● d5 (3v2), ● e4 (2v1)	● d4 (1v0), ● e5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 2)
Bb7		● Bb7 Mauvais (mob. 2)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (● c1, ● f1, ● a1, ● h1)	3 (● 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	mobile
Ruptures	● c4-c5	● …d7-d5

Partie
36. Olympiad 2004 – Round 14 – Akopian, Vladimir – 1-0 – Izoria, Zviad – G500 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Be2 Qb8
Amsterdam VSB 1996 – Round 3 – Lautier, Joel – 1-0 – Timman, Jan H – G7 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4 Bc5
Biel Interzonal 1993 – Round 3 – Gurevich, Mikhail – 1/2-1/2 – Korchnoi, Viktor – G64 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 c5 6. e4 cxd4 7. Nxd4 Bb7 8. Nc3 Nc6 9. Nxc6 Bxc6 10. Bf4 Nh5
Corus 2002 – Round 7 – Kasimdzhanov, Rustam – 1/2-1/2 – Adams, Michael – G47 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Qe2 d6
Corus 2002 – Round 8 – Morozevich, Alexander – 1/2-1/2 – Adams, Michael – G54 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Qe2 d6
FIDE WCh KO 2001 – Round 1.1 – Dreev, Aleksey – 1/2-1/2 – Supatashvili, Khvicha – G18 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4 Nh5
FIDE-Wch k.o. 1999 – Round 6.3 – Khalifman, Alexander – 1-0 – Nisipeanu, Liviu-Dieter – G122 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4 Nh5
Hoogovens 1996 – Round 13 – Dreev, Aleksey – 1/2-1/2 – Timman, Jan H – G71 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4 Bc5
Hoogovens 1996 – Round 5 – Timman, Jan H – 0-1 – Tiviakov, Sergei – G22 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4 Bc5
Hoogovens 1998 – Round 9 – Van Wely, Loek – 0-1 – Adams, Michael – G38 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4 Bc5
Interpolis 1993 – Round 1 – Akopian, Vladimir – 1-0 – Christiansen , Luis – G28 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4 Nh5

E12i — Petrosian (1993)

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Ba6 5.Qc2 Bb7 6.Nc3 c5 7.e4 cxd4 8.Nxd4 Nc6

Les coups candidats

9.Nxc6 — 96.3% (570 parties)

Ambassadeurs : Chuchelov, Vladimir (10x), Dreev, Aleksey (10x), Adams, Michael (10x), Sammalvuo, Tapani (9x), Tiviakov, Sergei (9x), ? (8x), Timman, Jan H (8x), Tunik, Gennady (7x)

9.Nb3 — 2.7% (16 parties)

Ambassadeurs : Nazarenus, Moritz (2x), Schoeneberg, Guenter (1x), Rosen, Willy (1x), Jaksland, Tim (1x), Pilgaard, Kim (1x), Petraitis, Zenonas (1x), Elburg, John (1x), Valgmaee, H. (1x)

9.Nf3 — 0.7% (4 parties)

Ambassadeurs : Gasparian, Narine (1x), Edzgveradze, Natalia (1x), Hanko, Pavel (1x), Szilow, S. (1x), Siebrecht, Sebastian (1x), Csonka, Alexandra Dzsenifer (1x), Burnett, Jim (1x), James, David J (1x)

9.Be3 — 0.3% (2 parties)

Ambassadeurs : Lupik, Marina (1x), Purtseladze, Maka (1x), Voiculescu, Costel (1x), Mourato, Mário (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.Nxc6	9.Nb3	9.Nf3	9.Be3
<1800	16	94%	6%	—	—
1800-2200	133	96%	3%	1%	—
2200-2600	328	96%	2%	1%	1%
2600+	49	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.Nxc6	9.Nb3	9.Nf3	9.Be3
1980s	31	94%	6%	—	—
1990s	175	97%	2%	1%	—
2000s	246	97%	2%	1%	0%
2010s	117	94%	4%	1%	1%
2020s	23	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.Nxc6	94%	100%	▲ +6.0%
9.Nb3	4%	0%	▼ -4.3%
9.Nf3	1%	0%	▼ -0.9%
9.Be3	1%	0%	▼ -0.9%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 3 parties
Karpov, Anatoly — 2 parties
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Hou, Yifan — 1 partie

Parties historiques

9.Nxc6 — 96.3% (570 parties)

1983 — Garcia Gonzales, Guillermo vs Miles, Anthony J — 1/2-1/2 — Bath tv II
1984 — De Firmian, Nick vs Schussler, Harry — 1-0 — Thessaloniki olm
1984 — Stohl, Igor vs Petrik, Stanislav — 1-0 — Cadca
1985 — Christiansen, Larry vs Miles, Anthony J — 1/2-1/2 — Linares
1985 — Whipp, EJ. vs Jackson, Sheila — 1/2-1/2 — Guernsey GCI

9.Nb3 — 2.7% (16 parties)

1986 — Schoeneberg, Guenter vs Rosen, Willy — 0-1 — Baltic tt5 corr8691
1989 — Jaksland, Tim vs Pilgaard, Kim — 1/2-1/2 — Aalborg DEN
1990 — Valgmaee, H. vs Wikman, Nils Ragnar — 0-1 — ICCF World Cup6-7 sf18
1993 — Petraitis, Zenonas vs Elburg, John — 1-0 — ?
1996 — Knoll, Hermann vs Gross, David — 1/2-1/2 — Linz AUT

9.Nf3 — 0.7% (4 parties)

1999 — Gasparian, Narine vs Edzgveradze, Natalia — 0-1 — Tbilisi GEO
2003 — Hanko, Pavel vs Szilow, S. — 1-0 — Krakow POL
2009 — Siebrecht, Sebastian vs Csonka, Alexandra Dzsenifer — 1/2-1/2 — Ohrid MKD
2014 — Burnett, Jim vs James, David J — 1/2-1/2 — Hinckley Island ENG

9.Be3 — 0.3% (2 parties)

2005 — Lupik, Marina vs Purtseladze, Maka — 0-1 — Herceg Novi SCG
2015 — Voiculescu, Costel vs Mourato, Mário — 0-1 — ICCF