E69n — King’s Indian: Fianchetto, Classical, 9.h3 Qb6 10.Re1 exd4 11.Nxd4 Re8

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6 9.h3 Qb6 10.Re1 exd4 11.Nxd4 Re8 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte f4, case forte g4, paire de fous, colonne d.
Faiblesses adverses : arriéré f7, Bc8 enfermé.
Problèmes : Bc1 enfermé, arriéré f2.
Plans :
● Bg5 — Clouer Nf6
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte c5, case forte e5, avant-postes c5(C), e5(C), paire de fous, colonne e.
Faiblesses adverses : arriéré f2, Bc1 enfermé, Bg2 mauvais fou.
Problèmes : Bc8 enfermé, arriéré f7.
Plans :
● ...Bf5 — Développer Bc8
● ...c5 — Rupture
● ...d5 — Rupture
● ...Re — Tour sur colonne e

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E69n — Fianchetto Classical

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6 9.h3 Qb6 10.Re1 exd4 11.Nxd4 Re8

Eval: [+0.70]

Les coups candidats

12.Nc2 — 42.6% (358 parties)

Ambassadeurs : Husemann, Andreas (5x), Rawlings, Alan J C (5x), Relyea, Alexander (5x), Armani, Giuseppe (4x), Portisch, Lajos (3x), Stein, Leonid (3x), Kamsky, Gata (3x), Konopka, Michal (3x)

12.Re2 — 35.7% (300 parties)

Ambassadeurs : Mason, Ian J (8x), Geller, Efim P. (6x), Kotronias, Vasilios (6x), Campbell, Eoin S. (6x), Volodin, Viktor (5x), Senzacqua, Fabrizio (4x), Richter, Christian (4x), Wojtkiewicz, Aleksander (3x)

12.Nb3 — 10.0% (84 parties)

Ambassadeurs : Berbatov, Kiprian (2x), Cummings, David H. (1x), Knox, Victor W (1x), Lechtynsky, Jiri (1x), Mista, Ladislav (1x), Saidy, Anthony (1x), Lesiege, Alexandre (1x), Velikov, Petar (1x)

12.Na4 — 9.2% (77 parties)

Ambassadeurs : Grivas, Efstratios (3x), Jurek, Josef (2x), Balacek, Tadeas (2x), Ruck, Robert (2x), Ivkov, Borislav (1x), Geller, Efim P. (1x), Kristensen, Henrik Lunden (1x), Willumsen, Henrik (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.Nc2	12.Re2	12.Nb3	12.Na4
<1800	11	27%	36%	18%	9%
1800-2200	246	43%	41%	8%	6%
2200-2600	452	44%	33%	13%	8%
2600+	17	47%	29%	12%	6%

Évolution par décennie (% des parties)

Décennie	N parties	12.Nc2	12.Re2	12.Nb3	12.Na4
1940s	1	100%	—	—	—
1960s	17	41%	35%	—	6%
1970s	14	43%	36%	14%	—
1980s	50	28%	28%	10%	32%
1990s	165	28%	35%	15%	19%
2000s	135	48%	27%	13%	9%
2010s	394	44%	43%	7%	4%
2020s	64	70%	14%	9%	5%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.Nc2	44%	70%	▲ +26.4%
12.Re2	43%	14%	▼ -29.3%
12.Nb3	7%	9%	▲ +2.0%
12.Na4	4%	5%	▲ +1.1%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Aleksandr — 3 parties
Botvinnik, Mikhail — 2 parties
Karpov, Anatoly — 2 parties
Anand, Viswanathan — 1 partie
Kasparov, Garry — 1 partie

Parties historiques

12.Nc2 — 42.6% (358 parties)

1947 — Pizzi Possi, Tulio vs Najdorf, Miguel — 0-1 — Mar del Plata ARG
1964 — Marovic, Drazen vs Udovcic, Mijo — 1-0 — Zagreb CRO
1965 — Udovcic, Mijo vs Marovic, Drazen — 1/2-1/2 — Zagreb CRO
1967 — Portisch, Lajos vs Stein, Leonid — 1-0 — Sousse (Tunisia)
1967 — Portisch, Ferenc vs Stein, Leonid — 1-0 — Sousse TUN

12.Re2 — 35.7% (300 parties)

1969 — Botvinnik, Mikhail vs Geller, Efim P. — 0-1 — Belgrade SRB
1969 — Botvinnik, Mikhail vs Geller, Efim P. — 0-1 — Belgrade SRB
1969 — Schmidt, Waldemar vs Ivkov, Borislav — 1/2-1/2 — Polanica Zdroj POL
1969 — Lengyel, Agnes vs Tringov — 1/2-1/2 — Belgrade SRB
1969 — Lengyel, Agnes vs Geller, Efim P. — 1/2-1/2 — Budapest HUN

12.Nb3 — 10.0% (84 parties)

1974 — Lechtynsky, Jiri vs Mista, Ladislav — 1-0 — Rimavska Sobota SVK
1979 — Cummings, David H. vs Knox, Victor W — 1-0 — Chester ch-BCF
1981 — Geller, Efim P. vs Dydyshko, Viacheslav — 1/2-1/2 — Moscow RUS
1984 — Velikov, Petar vs Tringov, Georgi P — 1/2-1/2 — Plovdiv BUL
1984 — Matlak, Marek vs Miljanic, Boro — 1/2-1/2 — Kiljava

12.Na4 — 9.2% (77 parties)

1969 — Ivkov, Borislav vs Geller, Efim P. — 1/2-1/2 — Skopje MKD
1981 — De Vogel, Isai vs Weiss, Guenther — 0-1 — corr BdF/M
1981 — Karpov, Aleksandr vs Balashov, Yuri — 1-0 — cat. 15, It , Moscow
1982 — Dezan, Pierre vs Grivas, Efstratios — 0-1 — Paris FRA
1982 — Ivanov, Igor V. vs Brooks, Michael — 1/2-1/2 — Los Angeles, CA USA

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● f2	● f7
Chaînes	● f2→g3	● b7→c6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (3v2), ● f4 (2v0), ● g4 (2v1)	● c5 (3v0), ● e5 (3v0)
Cases faibles	● e4	—
Centre	● d5 (3v2), ● e4 (3v2)	● e5 (3v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Mauvais (mob. 3)
Bg7		● Bg7 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c4-c5, ● e4-e5, ● f2-f3	● …c6-c5, ● …d6-d5

Partie
1947 Mar del Plata – Round 3 – Pizzi Possi, Tulio – 0-1 – Najdorf, Miguel – G31 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. g3 d6 6. Bg2 Nbd7 7. O-O e5 8. h3 c6 9. e4 exd4 10. Nxd4 Re8
1962 Mar del Plata – Round 3 – Bielicki, Carlos – 0-1 – Polugaevsky, Lev – G33 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4 c6 9. Re1 Qb6 10. h3 exd4
1964 WchT U26 11. fin-A – Round 1.2 – Kavalek, Lubomir – 1-0 – Marovic, Drazen – G8 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d4 d6 6. Nf3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
1964 Zagreb – Round 8 – Marovic, Drazen – 1-0 – Udovcic, Mijo – G42 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
1965 Zagreb – Round 19 – Udovcic, Mijo – 1/2-1/2 – Marovic, Drazen – G189 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
1967 Sousse Interzonal – Round 19 – Portisch, Lajos – 1-0 – Stein, Leon Rico – G173 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
1969 Budapest – Round 1 – Lengyel, Agnes – 1/2-1/2 – Geller, Efim P – G9 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. Nc3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
1969 Liberation – Round 2 – Botvinnik, Mikhail – 0-1 – Geller, Efim P – G11 1. c4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 Nf6 5. g3 O-O 6. Bg2 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
1969 Raach zt – Round 1 – Ivkov, Borislav – 1/2-1/2 – Sigurjonsson, Gudmundur – G9 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nbd7 7. Nc3 e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
1969 Rubinstein Memorial – Round 10 – Schmidt, Waldemar – 1/2-1/2 – Ivkov, Borislav – G38 1. c4 Nf6 2. Nf3 c6 3. d4 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O d6 7. Nc3 Nbd7 8. e4 e5 9. h3 Re8 10. Re1 exd4
1969 Skopje – Round 1 – Ivkov, Borislav – 1/2-1/2 – Geller, Efim P – G6 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
20. Amber Blindfold 2011 – Round 6 – Gelfand, Boris – 1/2-1/2 – Nakamura, Hikaru – G14 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. g3 d6 6. Bg2 c6 7. O-O Nbd7 8. e4 e5 9. h3 Qb6 10. Re1 exd4
43. Olympiad 2018 – Round 10.7 – Van Wely, Loek – 0-1 – Adhiban, B. – G685 1. d4 d6 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. c4 O-O 6. Nc3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4
Amber-blind 3rd 1994 – Round 11 – Karpov, Anatoly – 0-1 – Kamsky, Gata – G50 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. h3 c6 9. e4 Re8 10. Re1 exd4
Biel Interzonal 1993 – Round 4 – Akopian, Vladimir – 1-0 – Sherzer, Alex – G89 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. h3 8. ... c6 9. e4 Qb6 10. Re1 exd4
World Rapid 2019 – Round 14.11 – Wang, Hao(ZJWZ) – 0-1 – Firouzja, Alireza – G881 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. Re1 exd4

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