Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● g2→f3, f3→e4 ● b7→a6, b7→c6, e7→d6, f7→g6, h7→g6
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes
Cases faibles
Centre ● d4 (2v0), ● d5 (3v2), ● e4 (2v1)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bf1 ● Bf1 Non développé (mob. 2)
Be3 ● Be3 Actif (mob. 6)
Bg7 ● Bg7 Ok (mob. 2)
Bc8 ● Bc8 Non développé (mob. 5)
Paire de fous ● Oui ● Oui
Non développées 4 (● g1, ● f1, ● a1, ● h1) 4 (● b8, ● c8, ● 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, ● d4-d5, ● e4-e5 ● …c6-c5, ● …d6-d5, ● …e7-e5

E80o — King’s Indian: Saemisch, 5…c6 6.Be3 a6 7.a4

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 c6 6.Be3 a6 7.a4 *   ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bN
bB
bQ
bK
bR
bP
bP
bP
bB
bP
bP
bP
bP
bN
bP
wP
wP
wPPion central
wPPion central
wN
wBFou actif — mobilité 6
wP
wP
wP
wP
wR
wQ
wK
wB
wN
wR
abcdefgh
Plans. Bd3 (Développer f1 — 55 % des parties) ; Qd2 (Prépare O-O-O — 27 % des parties) ; Nge2 (Développer g1 — 10 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wN
wB
wK
wQ
wR
wP
wP
wP
wP
wB
wN
wP
wP
wP
wP
bP
bN
bP
bP
bP
bP
bB
bP
bP
bP
bR
bK
bQ
bBFou actif — mobilité 5
bN
bR
hgfedcba
Plans. ...a5 (80 % des parties) ; ...Qa5 (Contrôle diagonale a5-e1, Prépare O-O-O — 8 % des parties) ; ...O-O (Mettre le roi en sécurité, connecter les tours — 6 % des parties) ; ...Nbd7 (Développer b8 — 6 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
Partie
1957 Corr – Round ? – Koblents, Aleksandrs N – 1/2-1/2 – Dubinin, Peter – G7
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Bd3 Na6 9. Rc1 e5 10. d5 Nd7
1959 York ch-BCF – Round 10 – Fazekas, Stephan – 1/2-1/2 – Wade, Robert G – G112
1. d4 g6 2. c4 Bg7 3. Nc3 Nf6 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 Qa5 8. Rb1 Nbd7 9. b4 Qc7 10. Qd2 O-O
1961 URS Ch sf Batumi GEO – Round ? – Anokhin, Yuri – 0-1 – Nei, Iivo – G20
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. g4 h5 9. g5 Nfd7 10. f4 Na6
1963 Ontario Open – Round 2 – Day, Lawrence A. – 1/2-1/2 – Grimshaw, David – G2
1. c4 Nf6 2. d4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 O-O 8. g3 Nbd7 9. Qd2 e5 10. d5 cxd5
1963 Zenica ch YUG – Round 19 – Damjanovic, Mato – 1/2-1/2 – Bertok, Mario Jr. – G107
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 a5 8. Bd3 e5 9. d5 c5 10. Qd2 Na6
1964 Amsterdam Interzonal – Round 15 – Bronstein, David I – 1-0 – Evans, Larry M – G143
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Bd3 e5 9. Nge2 Na6 10. Qd2 Nb4
1964 Buenos Aires – Round 13 – Petrosian, Tigran V – 1-0 – Byrne, Robert E – G115
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 Qa5 8. Bd3 c5 9. d5 O-O 10. Ne2 e6
1965 New York ch-USA – Round 10 – Addison, Wiliam G – 1/2-1/2 – Byrne, Ray – G23
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 Nbd7 8. f4 O-O 9. e5 Ne8 10. Nf3 Nc7
1965 POL Ch 23th sf – Round 6 – Kuszko, Juliusz – 0-1 – Pietrusiak, Bogdan – G15
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 Qa5 8. Bd3 Nbd7 9. Ne2 O-O 10. O-O e5
1965 WchT U26 12. fin-A – Round 4 – Khodos, German – 1/2-1/2 – Pavlov, Mircea-Sergiu-Aurelian – G21
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Bd3 Na6 9. Rc1 Nb4 10. Bb1 O-O
1966 La Habana olm fin-A – Round 10 – Bobotsov, Milko G – 1-0 – Byrne, Ray – G180
1. c4 g6 2. d4 Nf6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 Nbd7 8. Nh3 O-O 9. Nf2 c5 10. d5 Ne5
1966 New York ch-USA – Round 8 – Benko, Pal – 1-0 – Byrne, Ray – G39
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 O-O 8. Bd3 Nbd7 9. Nge2 c5 10. O-O b6
1966 Rzeszow ch POL – Round 10 – Ziembinski, Marian – 1/2-1/2 – Schmidt, Wlodzimierz – G64
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 O-O 8. Bd3 e5 9. d5 cxd5 10. cxd5 Nh5
1966 Rzeszow ch POL – Round 7 – Balcerowski, Witold – 1/2-1/2 – Brzozka, Stefan – G45
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Bd3 O-O 9. Nge2 e5 10. d5 Ne8
1967 Reggio Emilia 6768 10th – Round 4 – Saidy, Anthony – 1-0 – Bertok, Mario Jr. – G12
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 Nbd7 8. Bd3 a5 9. Nge2 e5 10. O-O O-O
1967 Winnipeg – Round 3 – Gheorghiu, Florin – 1/2-1/2 – Szabo, Ladislav – G17
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Bd3 Na6 9. Rc1 O-O 10. Nge2 Nd7
1968 CSR Ch – Round 17 – Vykydal, Frantisek – 0-1 – Jansa, Vlastimil – G155
1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nf6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Qd2 Na6 9. Nge2 O-O 10. g4 e5
1968 Lublin PKWN 4th – Round 3 – Balcerowski, Witold – 1/2-1/2 – Pietrusiak, Bogdan – G7
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Bd3 Na6 9. Nge2 O-O 10. O-O e5
1968 Lugano SUI – Round 1 – Darga, Klaus – 1/2-1/2 – Byrne, Ray – G2
1. c4 g6 2. d4 Nf6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 a5 8. Bd3 Na6 9. Rc1 e5 10. d5 Nd7
1968 Lugano SUI – Round 2 – Lagha, Khelil – 0-1 – Jansa, Vlastimil – G63
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Nge2 Na6 9. Qd2 O-O 10. Nc1 Nd7
1968 Monte Carlo – Round 1 – Benko, Pal – 1/2-1/2 – Byrne, Ray – G3
1. c4 g6 2. d4 Bg7 3. Nc3 Nf6 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 a5 8. Bd3 Na6 9. Rc1 e5 10. d5 Nd7
1968 Reykjavik – Round 1 – Thorbergsson, Freysteinn – 1/2-1/2 – Byrne, Ray – G31
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 a5 8. Qd2 Na6 9. Nge2 O-O 10. Bh6 Nb4
1968 Solingen – Round 5 – Nowak, Jan – 0-1 – Szabo, Laszlo – G25
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Qd2 Na6 9. Nge2 O-O 10. Nc1 Nb4
1969 Hoogovens – Round 7 – Van Scheltinga, Theo – 0-1 – Benko, Pal – G56
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Bd3 Na6 9. Nge2 e5 10. d5 Nd7
1969 ISL Ch Reykjavik ISL – Round 1 – Thorbergsson, Freysteinn – 1-0 – Jonsson, Halldor – G1
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Qd2 O-O 9. O-O-O Na6 10. h4 Qc7
1971 Moscow – Round 1 – Korchnoi, Viktor – 1-0 – Balashov, Yuri S – G24
1. c4 g6 2. d4 Nf6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. a4 a5 8. Nge2 O-O 9. Nc1 Na6 10. Be2 Qc7

E80o — Saemisch (1957)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 c6 6.Be3 a6 7.a4
Les coups candidats
7…a5 — 78.3% (331 parties)
Ambassadeurs : Byrne, Robert E (7x), Podzielny, Karl-Heinz (5x), Nickl, Klaus (4x), Jansa, Vlastimil (3x), Balcerowski, Witold (3x), Gheorghiu, Florin (3x), Saric, Sinisa (3x), Bobotsov, Milko G (2x)
7…Nbd7 — 8.3% (35 parties)
Ambassadeurs : Byrne, Robert E (2x), Bobotsov, Milko G (1x), Addison, Wiliam G (1x), Saidy, Anthony (1x), Bertok, Mario Jr. (1x), Bjerre, Troels (1x), Ejsing, Esben (1x), Martin Del Campo C., Jorge (1x)
7…O-O — 8.0% (34 parties)
Ambassadeurs : Day, Lawrence A. (1x), Grimshaw David (1x), Ziembinski, Marian (1x), Schmidt, Wlodzimierz (1x), Wood, Richard (1x), Goethals F (1x), Benko, Pal (1x), Byrne, Robert E (1x)
7…Qa5 — 4.5% (19 parties)
Ambassadeurs : Fazekas, Stephan (1x), Wade, Robert G (1x), Ungureanu, Emil (1x), Norby, Peter H. (1x), Petrosian, Tigran V. (1x), Byrne, Robert E (1x), Kuszko, Juliusz (1x), Pietrusiak, Bogdan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…a5 7…Nbd7 7…O-O 7…Qa5
<1800 19 53% 26% 5% 11%
1800-2200 174 76% 9% 10% 3%
2200-2600 149 88% 4% 5% 3%
2600+ 3 100%
Évolution par décennie (% des parties)
Décennie N parties 7…a5 7…Nbd7 7…O-O 7…Qa5
1950s 2 50% 50%
1960s 34 68% 9% 12% 12%
1970s 39 82% 3% 8% 8%
1980s 42 86% 7% 5% 2%
1990s 83 77% 11% 7% 5%
2000s 87 72% 15% 8% 2%
2010s 116 84% 3% 9% 3%
2020s 20 75% 10% 10% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…a5 84% 75% ▼ -8.6%
7…Nbd7 3% 10% ▲ +6.6%
7…O-O 9% 10% ▲ +1.4%
7…Qa5 3% 5% ▲ +2.4%
Parties historiques
7…a5 — 78.3% (331 parties)
1957 — Koblents, Aleksandrs N vs Dubinin, Peter — 1/2-1/2 — ?
1961 — Anokhin, Yuri vs Nei, Iivo — 0-1 — URS-ch sf Batumi GEO
1963 — Damjanovic, Mato vs Bertok, Mario Jr. — 1/2-1/2 — Zenica ch YUG
1964 — Bronstein, David I vs Evans, Larry — 1-0 — Amsterdam izt
1965 — Khodos, German vs Pavlov, Mircea-Sergiu-Aurelian — 1/2-1/2 — Sinaia
7…Nbd7 — 8.3% (35 parties)
1965 — Addison, Wiliam G vs Byrne, Robert E — 1/2-1/2 — New York ch-USA
1966 — Bobotsov, Milko G vs Byrne, Robert E — 1-0 — Havana olm
1967 — Saidy, Anthony vs Bertok, Mario Jr. — 1-0 — Reggio Emilia ITA
1978 — Tichy, Vladimir vs Meduna, Eduard — 1-0 — Marianske Lazne
1986 — Andrianov, Nikolai vs Hesse, Peter — 1-0 — Olomouc CZE
7…O-O — 8.0% (34 parties)
1963 — Day, Lawrence A. vs Grimshaw David — 1/2-1/2 — Toronto CAN
1965 — Wood, Richard vs Goethals F — 0-1 — ?
1966 — Ziembinski, Marian vs Schmidt, Wlodzimierz — 1/2-1/2 — Rzeszow ch POL
1966 — Benko, Pal vs Byrne, Robert E — 1-0 — New York ch-USA
1972 — Cunningham, Sherman B vs Stevens, Lawrence — 0-1 — ?
7…Qa5 — 4.5% (19 parties)
1959 — Fazekas, Stephan vs Wade, Robert G — 1/2-1/2 — York ch-BCF
1964 — Petrosian, Tigran V. vs Byrne, Robert E — 1-0 — Buenos Aires ARG
1965 — Kuszko, Juliusz vs Pietrusiak, Bogdan — 0-1 — Poznan POL
1968 — Ungureanu, Emil vs Norby, Peter H. — 1-0 — Lugano SUI
1968 — Konopleva, Natalia vs Zvorykina, Kira — 1-0 — Ashkhabad

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