Structure de pions
♔ Blancs ♚ Noirs
Pions doublés — —
Pions isolés — —
Arriérés — —
Chaînes ● f2→g3, h2→g3 ● f7→e6
Passés — —
Majorité ● aile dame 3v2 —
Cases
♔ Blancs ♚ Noirs
Cases fortes ● f4 (2v0), ● b5 (3v0) —
Cases faibles — —
Centre ● 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. 7)
Bc8 ● Bc8 Non développé (mob. 1)
Bf8 ● Bf8 Non développé (mob. 1)
Paire de fous ● Oui ● Oui
Non développées 4 (● c1, ● f1, ● a1, ● h1) 5 (● b8, ● c8, ● 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 ● e4-e5 ● …d6-d5

B80o — Scheveningen, Fianchetto Variation

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g3   ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bN
bB
bQ
bK
bB
bR
bP
bP
bP
bP
bP
bP
bP
bN
Case forte (3v0)
wN
wPPion central
Case forte (2v0)
wN
wP
wP
wP
wP
wP
wP
wR
wBFou actif — mobilité 5
wQ
wK
wBFou actif — mobilité 7
wR
abcdefgh
Plans. Bg5 (Clouer Nf6) ; Bd3 (Développer Bf1) ; e5 (Occuper le centre) ; f3 (Poussée) ; f4 (Poussée).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wB
wK
wQ
wB
wR
wP
wP
wP
wP
wP
wP
wN
wP
wN
bN
bP
bP
bP
bP
bP
bP
bP
bR
bB
bK
bQ
bB
bN
bR
hgfedcba
Plans. ...Nbd7 (Développer Nb8) ; ...Bd7 (PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bf5)) ; ...Be7 (Développer Bf8) ; ...d5 (Occuper le centre) ; ...e5 (Occuper le centre).
Avantages
Faiblesses
Diagonale active
Plans
Partie
1931 Moskou ch-URS – Round 1 – Bohatyrchuk, Fedir Parfenovych – 0-1 – Riumin, Nikolai – G82
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. b3 Bd7 10. Bb2 Nc6
1937 Tbilisi ch-URS – Round 1 – Bondarevsky, Igor – 1/2-1/2 – Goglidze, Viktor – G98
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. b3 Qc7 10. Bb2 Nc6
1937 Tbilisi ch-URS – Round 1 – Panov, Vasily – 1-0 – Makogonov, Vladimir – G89
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Kh1 Nc6 10. Nb3 Bd7
1939 Kemeri / Riga – Round 1 – Szabo, Ladislav – 0-1 – Dreibergs, Leonid – G52
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O O-O 9. b3 Qc7 10. Bb2 Bd7
1939 Leningrad ch-URS – Round 2 – Rabinovich, Ilya Mar – 1-0 – Ragozin, Viacheslav – G15
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Qd2 Nbd7 10. b3 Rb8
1939 Leningrad/Moscow – Round 15 – Tolush, Alexander V – 0-1 – Ragozin, Viacheslav – G113
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Be3 Bd7 10. Qe2 Nc6
1939 Stuttgart – Round 8 – Kieninger, Georg – 1/2-1/2 – Bogoljubow, Efim – G44
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. h3 Qc7 10. Be3 Nbd7
1940 Moskou ch-URS – Round 1 – Panov, Vasily – 0-1 – Gerstenfeld, Eduard – G73
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. a4 Nc6 10. Nb3 Na5
1940 URS-sf – Round 1 – Konstantinopolsky, Alexander – 0-1 – er-Rudakovsky, Iosif – G36
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Qd2 Nbd7 10. b3 Rb8
1940 URS-sf – Round 1 – Rauzer, Vsevolod – 1/2-1/2 – Rudakovsky, Iosif – G44
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Nxc6 bxc6 10. e5 Nd5
1943 Vienna Ch – Round ? – Watzl, Leopold – 1-0 – Mueller, Hans – G8
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Nbd7 10. f4 Nb6
1944 La Plata Jockey Club – Round 9 – Villegas, Benito – 0-1 – Najdorf, Miguel – G45
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. f4 Nc6 10. Kh1 Bd7
1947 ARG-ch26 Mayor – Round 10 – Pilnik, Herman – 1-0 – Garibaldi, Oscar – G7
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O O-O 9. Be3 Qc7 10. h3 Nc6
1947 AUS Ch – Round 10.1 – Lindgren George – 0-1 – Steiner, Lajos – G11
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 b6 7. Bg2 Bb7 8. O-O a6 9. Be3 b5 10. a3 Nbd7
1947 Warsaw – Round 6 – Pytlakowski, Andrzej – 0-1 – Plater, Kazimierz – G32
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Be3 Bd7 10. Nde2 Ne5
1948 Buenos Aires/La Plata it – Round 11 – Pilnik, Herman – 1/2-1/2 – Camara, Luciano Wilfrido – G31
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. g4 d5
1948 Oldenburg – Round 12 – Sarapu, Ortvin – 1-0 – Kuppe, Wilhelm – G9
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 b6 7. Bg2 Bb7 8. O-O a6 9. a4 Qc7 10. Be3 Nbd7
1949 BUL Ch – Round 16 – Kiprov Alexander Alexandro – 1-0 – Bobekov, Radko – G79
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Kh1 Qc7 10. f4 Nc6
1949 GBR Ch 36th – Round 3.2 – Hooper, David – 0-1 – Fairhurst, William – G9
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Bd7 10. f4 Bc6
1949 Moscow RUS – Round 1 – Panov, Vasily – 0-1 – Abramov, Lev – G15
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. f4 Rd8
1951 Oxford – Round 1 – Yanofsky, Daniel Abraham – 1/2-1/2 – Fairhurst, William – G1
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 e5 7. Nde2 Bd7 8. Bg2 Be7 9. O-O h6 10. h3 Na6
1951 San Rafael – Round ? – Letelier Martner, Rene – 1-0 – Bauza, Lorenzo – G35
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. f4 O-O 10. g4 Nc6
1951 Sopot – Round 14 – Gereben, Erno – 1-0 – Ciejka, Tadeusz – G86
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. Qe2 Nbd7
1953 CSR Ch Prague – Round 4 – Vesely, Jiri – 1/2-1/2 – Alster, Ladislav – G25
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. Be3 Nc6 9. Qe2 a6 10. Rd1 Qc7
1954 Mar del Plata – Round 10 – Estrada Degrandi, Walter – 0-1 – Bauza, Lorenzo – G81
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O O-O 9. Be3 Qc7 10. f4 Nc6
1955 Moscow m – Round 1 – Khachaturov, Andrey Andreevich – 0-1 – Kan, Ilya A – G1
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. Qe2 Nc6
1955 Novi Sad – Round 17 – Trajkovic, Mihajlo – 1/2-1/2 – Bertok, Mario Jr. – G126
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Nce2 O-O 10. b3 d5
1956 CSR Ch – Round 6 – Betak Miroslav – 0-1 – Ujtelky, Maximilian – G51
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. Qe2 Bd7
1957 CSR Ch – Round 12 – Blatny, Frantisek – 1-0 – Dolezal, Jiri – G50
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Be3 O-O 10. f4 Nc6
1957 Sombor – Round 21 – Trifunovic, Petar – 1-0 – Udovcic, Mijo – G200
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Nxc6 bxc6 10. e5 Nd5
1957 URS Ch, semi final – Round 7 – Bannik, Anatolij – 1-0 – Kotov Lundqvist, Alex – G64
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Nce2 Nbd7 10. h3 Nc5
1958 BUL Ch – Round ? – Chaprazov Ivan – 1/2-1/2 – Minev, Nikolay N – G39
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. h3 Qc7 10. a4 Nc6
1959 Marianske Lazne – Round 10 – Rabar, Braslav – 0-1 – Alster, Ladislav – G72
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Be3 Bd7 10. Qe2 Nc6
1960 EU-Cup Gr2 – Round 1.2 – Skold, Kristian – 0-1 – Salo, Toivo – G7
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Kh1 Qc7 10. f4 Nc6
1960 Leipzig olm fin-A – Round 7 – Troianescu, Octav – 1/2-1/2 – Clarke, Peter H – G124
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. h3 Nc6
1961 Clare Benedict Cup 08th – Round 1.2 – Keller, Dieter – 1/2-1/2 – Penrose, Jonathan – G4
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Nde2 Rb8 10. a4 a6
1961 Moscow Ch – Round ? – Bykhovsky, Anatoly A – 1/2-1/2 – Bronstein, David I – G77
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Bd7 7. Bg2 Bc6 8. O-O Be7 9. b3 O-O 10. Bb2 Qb6
1961 WchT U26 08th – Round 2.4 – Liptay, Laszlo Dr. – 1/2-1/2 – Bogdanov, Emil – G21
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. Nb3 O-O 10. Qe2 Nc6
1962 Spartak Ch – Round 14 – Khasin, Abram – 1-0 – Platonov, Igor V – G108
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. b3 Qc7 10. Bb2 Nc6
1962 Whitby ch-BCF – Round 7 – Beaty, JH. – 0-1 – Parr, Frank – G82
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 e5 7. Nde2 Be6 8. Bg2 Be7 9. O-O Qd7 10. Re1 Bh3
1963 Belgrade – Round 1 – Bykhovsky, Anatoly A – 1/2-1/2 – Nedeljkovic, Alexsandar – G4
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. b3 Qc7 10. Bb2 Nc6
1964 Chigorin Memorial – Round 13 – Matulovic, Milan – 1/2-1/2 – Spassky, Boris Vasily – G87
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O O-O 9. b3 Bd7 10. a4 Nc6
1964 Harrachov – Round 2 – Voboril, Pavel – 0-1 – Jansa, Vlastimil – G3
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Kh1 Qc7 10. f4 Nc6
1964 Moscow Ch – Round ? – Bykhovsky, Anatoly A – 0-1 – Shamkovich, Leonid – G54
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Bd7 7. Bg2 Nc6 8. O-O Be7 9. Nce2 Nxd4 10. Qxd4 Bc6
1966 Bucharest – Round 3 – Czerniak, Moshe – 1-0 – ? – G15
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Nxc6 bxc6 10. e5 Nd5
1966 Clare Benedict Cup 13th – Round 2 – Robatsch, Karl – 1/2-1/2 – Donner, Jan-Hein – G8
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. h3 Bd7 10. Nde2 a6
1966 Clare Benedict Cup 13th – Round 5 – Kupper, Josef – 1/2-1/2 – Pomar Salamanca, Arturo – G18
1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Nde2 a6 10. h3 Qc7
1966 Corr – Round ? – Heemsoth, Hermann – 1-0 – Nathe, Emil – G5
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. f4 Nbd7 10. Kh1 O-O
1967 IBM I – Round 6 – Enevoldsen, Jens – 1/2-1/2 – Ciric, Dimitrije – G11
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. a4 Qc7 10. Nb3 Nc6
1968 DDR Ch 17th – Round 19 – Pietzsch, Wolfgang – 1/2-1/2 – Espig, Lutz – G72
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. f4 Nc6 10. Nxc6 bxc6
1968 IBM II – Round 2 – Czerniak, Magdalena – 0-1 – Acuna Medina, Angel G. – G5
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 a6 8. b3 Nc6 9. O-O Qc7 10. Bb2 O-O
1969 It Bad Pyrmont GER – Round 12 – Tompa, Janos – 1/2-1/2 – Westermeier, Arnulf – G21
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Bd7 9. b3 Nc6 10. Nde2 e5
1969 Schwerin – Round 5 – Packroff, Hermann – 0-1 – Pietzsch, Wolfgang – G51
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Nbd7 9. f4 Nb6 10. a4 Qc7
1970 IBM – Round 2 – Jongsma, Alexander – 0-1 – Spassky, Boris V. – G93
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. Qe2 Nc6
1975 URS Team Ch – Round 1 – Suetin, Alexey S – 1-0 – Dydyshko, Viacheslav – G316
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. a4 Qc7 10. Be3 Nbd7
Interpolis 1981 – Round 11 – Larsen, Bent – 1-0 – Andersson, Ulf 1949 – G52
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Nxc6 bxc6 10. e5 dxe5
Interpolis 1981 – Round 11 – Larsen, Bent – 1-0 – Andersson, Ulf 1949 – G53
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. Nxc6 bxc6 10. e5 dxe5
Leningrad ch-URS 1977 – Round 1 – Kuzmin, Gennadi – 0-1 – Tal, Mikhail – G23
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 a6 8. O-O Qc7 9. a4 Nc6 10. Be3 O-O
Riga Interzonal 1979 – Round 6 – Tarjan, James – 0-1 – Tal, Mikhail – G15
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. b3 Bd7 10. Bb2 Rc8
URS Spartakiad 1979 – Round 1 – Lutikov, Anatoly S – 1/2-1/2 – Tal, Mikhail – G13
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 Be7 7. Bg2 O-O 8. O-O Nc6 9. b3 a6 10. Nxc6 bxc6

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