A05s — Reti: KIA

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O *   ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bN
bBFou enfermé — mobilité 0
bQ
bKRoi au centre — vulnérable
bR
bP
bP
bP
bP
bP
bP
bBFou enfermé — mobilité 2
bP
bN
bP
wN
wP
wP
wP
wP
wP
wP
wP
wB
wP
wR
wN
wB
wQ
wR
wK
abcdefgh
Avantages : paire de fous.
Faiblesses adverses : Bg7 enfermé, Bc8 enfermé, roi noir au centre.
Problèmes : Bc1 enfermé, Bg2 enfermé, 3 pièces non développées (B1, C1, A1).
Plans :
● Nbd2 — Développer Nb1
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wK
wR
wQ
wBFou enfermé — mobilité 0
wN
wR
wP
wBFou enfermé — mobilité 2
wP
wP
wP
wP
wP
wP
wP
wN
bP
bN
bP
bB
bP
bP
bP
bP
bP
bP
bR
bK
bQ
bB
bN
bR
hgfedcba
Avantages : paire de fous.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé.
Problèmes : roi au centre, Bg7 enfermé, Bc8 enfermé, 4 pièces non développées (B8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Nc6 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...c5 — Rupture
Avantages
Faiblesses adverses
Diagonale active
Plans

Structure de pions
A05s — KIA
1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O
Eval: [+0.17]
Les coups candidats
Ambassadeurs : Gutman, Lev (112x), Bilek, Istvan (75x), Badea, Bela (50x), Gyorkos, Lajos (41x), Forintos, Gyozo V (40x), Foisor, Cristina-Adela (37x), Meier, Georg (37x), Ghasi, Ameet K (35x)
4…d5 — 4.4% (1299 parties)
Ambassadeurs : Rosino, Antonio (7x), Fogarasi, Tibor (6x), Egger, Thomas (5x), Pribyl, Josef (4x), Kirov, Nino (4x), Fernandez Garcia, Jose Luis(2) (4x), Gutman, Leni (4x), Ederer, Karel (4x)
4…d6 — 3.5% (1040 parties)
Ambassadeurs : Lutzenberger, Reimund (3x), Sarquis, Maria Belen (3x), Benderac, Srdjan (3x), Wood, Ben A (3x), Kubik, Michael (3x), Horvath, Reka (3x), Eidelson, Rakhil (3x), Kadin Young (2x)
4…c5 — 2.5% (737 parties)
Ambassadeurs : Kashlinskaya, Alina (4x), Chadwick, Charles (3x), Vlassov, Nikolai (3x), Chernyak, Viktoria (3x), Perez Cameselle, Francisco Jose (3x), Castaldi, Vincenzo (2x), Bilek, Istvan (2x), Portisch, Lajos (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…O-O 4…d5 4…d6 4…c5
<1800 889 84% 6% 6% 4%
1800-2200 10657 88% 5% 4% 3%
2200-2600 11874 91% 4% 2% 2%
2600+ 282 91% 5% 1% 3%
Évolution par décennie (% des parties)
Décennie N parties 4…O-O 4…d5 4…d6 4…c5
1860s 1 100%
1920s 3 67% 33%
1930s 7 100%
1940s 44 91% 2% 7%
1950s 599 92% 3% 2% 2%
1960s 798 94% 2% 2% 2%
1970s 1077 92% 3% 3% 1%
1980s 1518 92% 3% 2% 2%
1990s 6040 90% 3% 4% 2%
2000s 7097 88% 4% 5% 3%
2010s 10012 89% 5% 3% 3%
2020s 2578 89% 5% 2% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…O-O 89% 89% ▲ +0.7%
4…d5 5% 5% -0.2%
4…d6 3% 2% ▼ -0.9%
4…c5 3% 3% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 10 parties
Tal, Mikhail — 10 parties
Smyslov, Vladimir — 10 parties
Kasparov, Garry — 10 parties
Gukesh D — 10 parties
Ding, Liren — 9 parties
Ju, Wenjun — 8 parties
Carlsen, Magnus — 6 parties
Anand, Viswanathan — 4 parties
Kramnik, Vladimir — 4 parties
Euwe, Max — 1 partie
Parties historiques
4…O-O — 89.4% (26607 parties)
1924 — Steiner, Endre vs Norman, George — 1-0 — Hastings Town Hall
1925 — Koenig, Imre vs Havasi Arthur — 1/2-1/2 — Budapest HUN
1935 — Najdorf, Miguel vs Tartakower, Savielly — 1-0 — Torun m
1936 — Ragozin, Viacheslav vs Chekhover, Vitaly — 1/2-1/2 — Tournament, Leningrad RUS
1936 — Concepcion Villegas, Bryan Uriel vs Bolbochan, J. — 1/2-1/2 — Mar del Plata ARG
4…d5 — 4.4% (1299 parties)
1865 — Jobin, Gilles vs Murray, Andre — 1-0 — Montreal CAN
1950 — Book, Eero vs Nestler, Vincenzo — 1-0 — Dubrovnik CRO
1951 — Barcza, Gedeon vs Koberl, Ferenc — 1-0 — Hungary ch
1952 — Anagnostou, Ioannis vs Morel, Fernand — 1/2-1/2 — Helsinki olm
1952 — Botvinnik, Mikhail vs O'Kelly, Albéric de Galway — 1-0 — Budapest HUN
4…d6 — 3.5% (1040 parties)
1946 — Kramer, Haije vs Tummers — 1-0 — Leiden NED
1952 — Leepin, Peter vs Mueller, Paul — 1-0 — Basel SUI
1952 — Lange, Wilfried vs Fred, Aatos — 1/2-1/2 — Helsinki olm
1952 — Plater, Kazimierz vs Larocca Muller, Paolo — 1-0 — Helsinki olm
1953 — Bruentrup, Dieter vs Dittmann, Sieghart — 1-0 — Brandenburg/Havel
4…c5 — 2.5% (737 parties)
1923 — Réti, Richard vs Muffang, André — 1/2-1/2 — Margate ENG
1942 — Pelikan, Jan vs Concepcion Villegas, Bryan Uriel — 1-0 — Mar del Plata ARG
1942 — Barcza, Gedeon vs Rellstab, Ludwig Sr — 0-1 — Munich GER
1949 — Benko, Pal vs Simagin, Vladimir — 1/2-1/2 — Budapest HUN
1950 — Castaldi, Vincenzo vs Aabel Thomas Eapen — 0-1 — Hastings ENG
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● f2→g3, h2→g3 ● f7→g6, h7→g6
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes
Cases faibles
Centre ● d4 (1v0), ● e5 (1v0) ● d5 (1v0), ● e4 (1v0)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 0)
Bg2 ● Bg2 Enfermé (mob. 2)
Bg7 ● Bg7 Enfermé (mob. 2)
Bc8 ● Bc8 Non développé (mob. 0)
Paire de fous ● Oui ● Oui
Non développées 3 (b1, c1, a1) 4 (b8, c8, a8, h8)
Sécurité du roi
♔ Blancs ♚ Noirs
Statut ● Roqué ● Au centre !
Droits de roque O-O / O-O-O
Thèmes
♔ Blancs ♚ Noirs
Phase Ouverture
Centre semi-ouvert
Ruptures ● c2-c3, ● d2-d3, ● e2-e3 ● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e7-e6, ● …e7-e5
Partie
1942 Munich – Round 2 – Barcza, Gedeon – 0-1 – Rellstab, Ludwig Sr – G22
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. d4 cxd4 6. Nxd4 d5 7. c4 dxc4 8. Qa4+ Nfd7 9. Rd1 O-O 10. Qxc4 Nb6
1949 Budapest-Moscow – Round 5 – Benko, Pal – 1/2-1/2 – Simagin, Vladimir – G38
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. c4 O-O 6. d4 cxd4 7. Nxd4 d5 8. cxd5 Nxd5 9. Nb5 e6 10. N1c3 a6
1950 Hastings5051 – Round 2 – Castaldi, Vincenzo – 0-1 – Aabel Thomas Eapen – G9
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. d4 cxd4 6. Nxd4 d5 7. c4 O-O 8. Nb3 dxc4 9. Qxd8 Rxd8 10. Na5 Nc6
1952 Budapest – Round 10 – Botvinnik, Mikhail – 1-0 – O'Kelly, Albéric de Galway – G96
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d5 5. d3 O-O 6. Nbd2 Nc6 7. e4 dxe4 8. dxe4 e5 9. Re1 Re8 10. c3 Nd7
1952 Paignton Premier 2nd – Round 1 – Oakley, Peter James – 1-0 – Wood, Baruch – G3
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. c4 Nc6 6. d4 cxd4 7. Nxd4 Qb6 8. Nb3 d6 9. Nc3 Be6 10. Nd5 Bxd5
1954 Prague zt – Round 15 – Solin, Ilya – 0-1 – Szabo, Ladislav – G86
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. c4 O-O 6. Nc3 d5 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. d3 Nc6 10. Ng5 Qd7
1956 URS Ch sf – Round ? – Zilber, Israel – 0-1 – Kondratiev, Pavel E – G141
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d6 5. d3 e5 6. e4 Nc6 7. c3 O-O 8. Nbd2 Nh5 9. Nc4 Bd7 10. d4 Qc8
1958 Mar del Plata – Round 3 – Behrensen, Joern – 0-1 – Pilnik, Herman – G27
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d5 5. c4 dxc4 6. Na3 O-O 7. Nxc4 Nc6 8. d3 Nd5 9. Rb1 h6 10. Bd2 Kh7
1958 Mar del Plata – Round 8 – Sumar, Julio – 0-1 – Pilnik, Herman – G63
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d5 5. d3 O-O 6. Nbd2 Nc6 7. c3 e5 8. e4 h6 9. Re1 Re8 10. a4 Be6
1958 Munich ol (Men) fin-B – Round 10 – Roessel, Frits – 1-0 – Kraidman, Yair – G17
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. c4 Nc6 6. d4 cxd4 7. Nxd4 O-O 8. Nc2 b6 9. Nc3 Bb7 10. b3 Qc8
1960 Poland Ch – Round 1 – Drozd, Robert – 1/2-1/2 – Balcerowski, Witold – G26
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d6 5. c4 c5 6. d4 Na6 7. Nc3 O-O 8. e4 Bg4 9. Be3 Rc8 10. d5 Nc7
1961 Budapest ch-HUN – Round 1 – Bilek, Istvan – 1/2-1/2 – Honfi, K. – G127
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d5 5. d3 O-O 6. c3 Re8 7. Nbd2 e5 8. e4 c6 9. Qc2 a5 10. b3 Na6
1966 La Habana olm prel – Round 3 – Bilek, Istvan – 1-0 – Diaz Calderon, Salvador – G60
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. Nc3 Nc6 6. d3 O-O 7. Bg5 h6 8. Bd2 d6 9. a3 Be6 10. Rb1 Rc8
SportAccord Rapid Men 2012 – Round 4.6 – Giri, Anish – 0-1 – Radjabov, Teimour – G28
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. c4 O-O 6. Nc3 d5 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. d3 Nc6 10. Be3 Bd7
World Blitz 2015 – Round 3.50 – Akopian, Vladimir – 1-0 – Al-Sayed, Mohammed – G182
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. c4 O-O 6. Nc3 d5 7. cxd5 Nxd5 8. Qb3 Nb6 9. d3 Nc6 10. Qb5 Nd7
World Blitz 2015 – Round 9.82 – Piorun, Kacper – 1-0 – Ben Artzi, Ido – G590
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d5 5. d3 O-O 6. Nbd2 Nc6 7. e4 e5 8. exd5 Nxd5 9. Re1 Re8 10. Nc4 f6

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