E66i — King’s Indian: Fianchetto, Yugoslav Panno, 9…a6 10.Qc2 Rb8

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.d5 Na5 9.Nd2 a6 10.Qc2 Rb8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte e4.

Atouts. Les Blancs s'appuient sur la case forte e4, un fou actif en g2 et la paire de fous.

Côté adverse. Les fous enfermés en g7 et c8.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte g4….

Atouts. Les Noirs s'appuient sur les cases fortes g4 et f5 et la paire de fous.

Côté adverse. Le fou enfermé en c1.

Plans. ...Bf5 (Développer Bc8) ; ...e6 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3, c4→d5	● d6→c5, b7→a6, e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (4v1)	● g4 (2v0), ● f5 (2v1)
Cases faibles	—	● d5
Centre	● d5 (3v1), ● e4 (4v1)	● d4 (1v0), ● e5 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 4)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	1 (● c8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● e2-e3, ● f2-f3	● …e7-e6, ● …e7-e5

Partie
1950 Moskou ch-URS – Round 1 – Smyslov, Vladimir – 1-0 – Liublinsky, Victor – G10 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d4 d6 6. Nf3 Nc6 7. d5 Na5 8. Nd2 c5 9. Qc2 a6 10. O-O Rb8
1950 URS-ch18 – Round ? – Smyslov, Vasily – 1-0 – Liublinsky, Victor – G3 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d4 d6 6. Nf3 Nc6 7. d5 Na5 8. Nd2 c5 9. Qc2 a6 10. O-O Rb8
1954 Budapest tt Budapest HUN – Round ? – Florian, Tibor – 1/2-1/2 – Bilek, Istvan – G21 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. d5 Na5 8. Nfd2 c5 9. Qc2 a6 10. Nc3 Rb8
1957 Toronto wch-jr – Round 4 – Lombardy, William J – 1-0 – Jobin, F. – G9 1. c4 Nf6 2. Nc3 c5 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nc6 6. d4 d6 7. O-O O-O 8. d5 Na5 9. Nd2 a6 10. Qc2 Rb8
1958 Kiev Ch – Round 3 – Poliak, Evsey – 1-0 – Tessieri Satz, Leo – G14 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. d5 Na5 8. Nfd2 c5 9. Nc3 Rb8 10. Qc2 a6
1959 UKR Ch – Round 1 – Poliak, Evsey – 1-0 – Stein, Leonid – G5 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nc6 7. d5 Na5 8. Nfd2 c5 9. Nc3 a6 10. Qc2 Rb8
1960 Sarajevo – Round 4 – Udovcic, Mijo – 1/2-1/2 – Toran Albero, Roman – G29 1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. Nc3 a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8
1963 Sweden – Round 11 – Aurell, Bo – 0-1 – Lundin, Erik – G18 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 c5 7. O-O Nc6 8. d5 Na5 9. Nd2 a6 10. Qc2 Rb8
1964 Budapest ch-HUN – Round 1 – Szily, Jozsef – 1/2-1/2 – Kluger, Gyula – G168 1. Nf3 Nf6 2. c4 c5 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 a6 10. Qc2 Rb8
1964 Tel Aviv olm fin-B – Round 13 – Ottati Sanchez, Alberto Andrey – 0-1 – Hindle, Owen M – G156 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nc6 7. O-O a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8
1965 Corr SSV-75 – Round ? – Bergraser, Volf – 1/2-1/2 – Nilsson, Zandor – G6 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. c4 d6 6. O-O Nc6 7. d5 Na5 8. Nfd2 c5 9. Nc3 a6 10. Qc2 Rb8
1966 FRA Ch 41st – Round 4 – Bergraser, Volf – 1/2-1/2 – Denouel Fricker, Damien – G8 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. c4 d6 5. Bg2 O-O 6. O-O Nc6 7. d5 Na5 8. Nfd2 c5 9. Nc3 a6 10. Qc2 Rb8
1968 Capablanca Memorial – Round 1 – Rodriguez Gonzales, Angie Kelly – 1/2-1/2 – Cobo Arteaga, Eldis – G4 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 c5 6. Nf3 d6 7. O-O Nc6 8. d5 Na5 9. Nd2 a6 10. Qc2 Rb8
Melody Amber, Blindfold, Monaco 1995 – Round 9 – Nikolic, Predrag – 1/2-1/2 – Shirov, Alexei – G35 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8

E66i — Fianchetto Yugoslav Panno

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.d5 Na5 9.Nd2 a6 10.Qc2 Rb8

Les coups candidats

11.b3 — 84.4% (2765 parties) →

Ambassadeurs : Cvitan, Ognjen (16x), Freisler, Pavel (16x), Izeta Txabarri, Felix (13x), Vadasz, Laszlo (13x), Krallmann, Matthias (12x), Ornstein, Axel (11x), Timar, Zsolt (11x), Rogozenco, Dorian (11x)

11.Rb1 — 8.1% (267 parties)

Ambassadeurs : Veron, Cyprien (5x), Bogdan, Dan (3x), Mihajlovic Vucic, Martin (3x), Drozdovskij, Yuri (3x), Macskasy, Elod (2x), Yanofsky, Daniel Abraham (2x), Heywood, Bill (2x), Minev, Nikolay N (2x)

11.a4 — 5.3% (174 parties)

Ambassadeurs : Caron, Sérgio Valladares (4x), Ruiz Castillo, Joshua Daniel (3x), Tyutyunnik, Roman (2x), Sgircea, Silvia-Raluca (2x), Li, Wenxiang (2x), Lombardy, William J (1x), Jobin, F. (1x), Hempson, Peter W (1x)

11.a3 — 1.8% (59 parties)

Ambassadeurs : Eckhardt, Claudia (5x), Skrzypczak, Katja (4x), Poliak, Evsey (3x), Smyslov, Vasily (2x), Liublinsky, Victor (2x), Bergraser, Volf (2x), Richter, Julia (2x), Hegermann, Frank (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	11.b3	11.Rb1	11.a4	11.a3
<1800	23	83%	4%	13%	—
1800-2200	790	78%	11%	8%	3%
2200-2600	1785	86%	8%	5%	1%
2600+	35	80%	17%	3%	—

Évolution par décennie (% des parties)

Décennie	N parties	11.b3	11.Rb1	11.a4	11.a3
1950s	43	74%	5%	7%	14%
1960s	128	89%	4%	3%	3%
1970s	227	96%	3%	2%	—
1980s	365	93%	5%	1%	1%
1990s	887	89%	7%	2%	2%
2000s	795	84%	10%	3%	2%
2010s	719	73%	12%	13%	2%
2020s	113	69%	8%	21%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
11.b3	73%	69%	▼ -4.1%
11.Rb1	12%	8%	▼ -3.6%
11.a4	13%	21%	▲ +8.0%
11.a3	2%	2%	+0.2%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 3 parties
Kasparov, Garry — 3 parties
Ju, Wenjun — 3 parties
Botvinnik, Mikhail — 2 parties
Anand, Viswanathan — 2 parties
Tal, Mikhail — 1 partie
Ding, Liren — 1 partie

Parties historiques

11.b3 — 84.4% (2765 parties)

1950 — Simagin, Vladimir vs Borisenko, Georgy K — 1-0 — Ch URS (1/2 final), Tula RUS
1954 — Esposito, Alfredo vs Idigoras Guisasola, Gregorio — 1-0 — Buenos Aires ARG
1954 — Benko, Pal vs Polijevktov, V — 1-0 — Budapest HUN
1955 — Averbakh, Yuri L vs Bannik, Anatolij — 1/2-1/2 — Voroshilovgrad
1955 — Dodero, Emilio vs Sanguinetti, Renato — 1/2-1/2 — Buenos Aires ARG

11.Rb1 — 8.1% (267 parties)

1958 — Macskasy, Elod vs Yanofsky, Daniel Abraham — 1-0 — Winnipeg CAN
1958 — Macskasy, Elod vs Yanofsky, Daniel Abraham — 1-0 — Winnipeg CAN
1963 — Kottnauer, Cenek vs Sherbakov, Vitaly — 1/2-1/2 — Paris FRA
1964 — Ottati Sanchez, Alberto Andrey vs Hindle, Owen M — 0-1 — Tel Aviv ISR
1968 — Rodriguez Gonzales, Angie Kelly vs Cobo Arteaga, Eldis — 1/2-1/2 — Havana CUB

11.a4 — 5.3% (174 parties)

1954 — Florian, Tibor vs Bilek, Istvan — 1/2-1/2 — Budapest tt Budapest HUN
1957 — Lombardy, William J vs Jobin, F. — 1-0 — Toronto wch-jr
1958 — Caspary Herbert vs Peixoto Carlos — 0-1 — Rio de Janeiro BRA
1960 — Yanofsky, Daniel Abraham vs Woodbury, Jack — 1/2-1/2 — Manitoba op Winnipeg
1963 — Aurell, Bo vs Lundin, Erik — 0-1 — Karlskrona

11.a3 — 1.8% (59 parties)

1950 — Smyslov, Vasily vs Liublinsky, Victor — 1-0 — Moscow RUS
1950 — Smyslov, Vladimir vs Liublinsky, Victor — 1-0 — Moskou ch-URS
1950 — Smyslov, Vasily vs Lublinsky, V — 1-0 — USSR-ch18 Moscow
1958 — Poliak, Evsey vs Tessieri Satz, Leo — 1-0 — Kiev UKR
1958 — Poliak, Evsey vs Zats Efim — 1-0 — ?

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