B07o — Pirc: Czech, 4.Nf3

1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Nf3 *   ● 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
bP
bN
Case forte (2v0)
wPPion central
wPPion central
wN
wN
wP
wP
wP
wP
wP
wP
wR
wBFou actif — mobilité 5
wQ
wK
wBFou actif — mobilité 5
wR
abcdefgh
Plans. Be2 (Fou actif (mobilité 5), Développer f1 — 43 % des parties) ; h3 (Empêcher ...Bg4 — 26 % des parties) ; Bd3 (Fou actif (mobilité 5), Développer f1 — 8 % des parties) ; Bd2 (Fou actif (mobilité 5), Développer c1 — 6 % des parties).

♚ 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
wN
Case forte (2v0)
wP
wP
bN
bP
bP
bP
bP
bP
bP
bP
bP
bR
bB
bK
bQ
bBFou actif — mobilité 5
bN
bR
hgfedcba
Plans. ...Bg4 (Fou actif (mobilité 7), Développer c8 — 68 % des parties) ; ...g6 (Préparer le fianchetto — 12 % des parties) ; ...Qa5 (Contrôle diagonale a5-e1, Prépare O-O-O — 11 % des parties).
Avantages
Faiblesses
Diagonale active
Plans

Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● b7→c6, e7→d6
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes ● g5 (2v0) ● g4 (2v0)
Cases faibles
Centre ● d4 (2v0), ● e5 (2v1)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 5)
Bf1 ● Bf1 Non développé (mob. 5)
Bc8 ● Bc8 Non développé (mob. 5)
Bf8 ● Bf8 Non développé (mob. 0)
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 ● d4-d5, ● e4-e5 ● …c6-c5, ● …d6-d5, ● …e7-e5
Partie
1931 Bled – Round 1 – Maroczy, Geza – 1/2-1/2 – Tartakower, Savielly – G89
1. e4 c6 2. d4 Nf6 3. Nc3 d6 4. Nf3 Bg4 5. Be2 Nbd7 6. O-O e5 7. Be3 Be7 8. a4 h6 9. Nd2 Bxe2 10. Qxe2 O-O
1947 Leningrad ch-URS – Round 7 – Goldenov, Boris P – 1-0 – Kasparian, Genrikh – G85
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be3 Nbd7 6. h3 Bxf3 7. Qxf3 e5 8. O-O-O b5 9. g4 Qa5 10. Kb1 h6
1949 Schlechter Memorial – Round 1 – Foltys, Jan – 1-0 – Puc, Stojan – G12
1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bh5 6. Be2 e6 7. Be3 d5 8. exd5 exd5 9. O-O Be7 10. Ne5 Bxe2
1952 Moscow Ch – Round 13 – Averbakh, Yuri L – 0-1 – Simagin, Vladimir – G71
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 e6 6. Bg5 Be7 7. Nd2 Bxe2 8. Qxe2 Nxe4 9. Bxe7 Nxc3 10. Qg4 Kxe7
1955 Corr ch-SU – Round 1 – Dubinin, Peter – 1-0 – Shaposhnikov, Yury – G10
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bh5 6. g4 Bg6 7. Bd3 e6 8. g5 Nfd7 9. Nh4 d5 10. Qe2 dxe4
1957 HUN-JUG m – Round ? – Rakic, Tomislav – 1-0 – Koberl, Ferenc – G10
1. e4 d6 2. Nc3 Nf6 3. d4 c6 4. Nf3 Bg4 5. h3 Bxf3 6. Qxf3 Nbd7 7. g4 g6 8. Be3 Bg7 9. h4 h5 10. g5 Ng4
1957 Sombor – Round 9 – Smailbegovic, Hasan – 1/2-1/2 – Rakic, Tomislav – G99
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 Nbd7 6. O-O e5 7. Be3 Be7 8. Nd2 Bxe2 9. Qxe2 O-O 10. Rad1 b5
1958 Buenos Aires CA – Round 8 – Piazzini, Luis – 1/2-1/2 – Dominguez, Cristobal – G21
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 g6 5. Bg5 Bg7 6. Qd2 Be6 7. h3 a6 8. a4 d5 9. Bxf6 exf6 10. Bd3 Qc7
1958 HUN Ch 13th – Round 18 – Szily, Jozsef – 1-0 – Koberl, Ferenc – G153
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bxf3 6. Qxf3 e5 7. Be3 Nbd7 8. g4 h6 9. Be2 Qc7 10. O-O-O a6
1959 HUN Ch 15th – Round 7 – Szily, Jozsef – 1-0 – Koberl, Ferenc – G25
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 Nbd7 6. Ng5 Bxe2 7. Qxe2 e5 8. f4 Be7 9. Be3 O-O 10. O-O exf4
1959 URS Team Ch – Round ? – Veresov, Gavriil – 0-1 – Golyak, Isay G – G102
1. d4 Nf6 2. Nc3 d6 3. e4 c6 4. Nf3 Bg4 5. Be3 e6 6. Be2 d5 7. e5 Nfd7 8. Ng5 Bf5 9. Bh5 Bg6 10. Bxg6 hxg6
1960 Buenos Aires ch-ARG – Round 17 – Alvarez De Espejo Montiel, Miguel – 0-1 – Reinhardt, Enrique – G124
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Qc7 5. a4 e5 6. h3 Be7 7. Bc4 h6 8. Be3 Nbd7 9. Qd2 Nf8 10. Bb3 Ne6
1961 Reggio Emilia 6162 04th – Round ? – Giustolisi, Alberto – 1-0 – Sanz Aguado, Jose – G7
1. e4 c6 2. d4 d6 3. Nf3 Nf6 4. Nc3 g6 5. Bf4 Bg4 6. h3 Bxf3 7. Qxf3 Bg7 8. O-O-O O-O 9. e5 Nd5 10. Nxd5 cxd5
1961 Reggio Emilia ITA – Round 3 – Canal, Esteban – 1-0 – Bartolome Sanz, Jose – G4
1. e4 c6 2. d4 d6 3. Nc3 Nf6 4. Nf3 g6 5. Bg5 Bg7 6. h3 O-O 7. Qd2 b5 8. a3 Nbd7 9. Bh6 Nb6 10. Bxg7 Kxg7
1963 Budapest ch-HUN – Round 1 – Kluger, Gyula – 1/2-1/2 – Koberl, Ferenc – G155
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 g6 5. Bg5 h6 6. Bh4 Qa5 7. Nd2 Be6 8. d5 Bg4 9. f3 Bd7 10. Nc4 Qc7
1965 Buenos Aires ch-ARG – Round 7 – Abraira Rodriguez, Alicia – 0-1 – Pelikan, Anna – G53
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 g6 5. Bg5 h6 6. Bxf6 exf6 7. Bc4 Bg7 8. O-O O-O 9. Nh4 f5 10. Nxg6 d5
1965 Clare Benedict Cup 12th – Round 5 – Nievergelt, Erwin – 1-0 – Kinzel, Anton – G11
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 Nbd7 6. h3 Bxf3 7. Bxf3 e5 8. Be3 Be7 9. Qd2 Qc7 10. g4 Nb6
1975 URS Team Ch – Round 5 – Kayumov, Dmitry D – 1-0 – Chebanenko, Vecheslav – G378
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 e6 6. O-O Be7 7. e5 dxe5 8. dxe5 Qxd1 9. Bxd1 Nd5 10. Nd4 Bxd1
30. ECC Open 2014 – Round 3.9 – Potkin, Vladimir – 1/2-1/2 – Piyush Shaw – G68
1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bh5 6. Qe2 e6 7. g4 Bg6 8. h4 h5 9. g5 Nfd7 10. Bh3 Be7
42. Olympiad 2016 – Round 6.25 – Volodin, Aleksandr – 0-1 – Zhang, Zhong – G430
1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. Nf3 Qa5 5. Bd2 Qc7 6. Bc4 Bg4 7. O-O e5 8. Be3 Be7 9. h3 Bh5 10. a3 Nbd7
FIDE World Blitz Championship 2014 – Round 15.4 – Bacrot, Etienne – 0-1 – Mamedyarov, Shakhriyar – G142
1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be3 e6 6. Be2 d5 7. e5 Nfd7 8. Nd2 Bf5 9. g4 Bg6 10. h4 h6
FIDE World Rapid Championship 2014 – Round 11.9 – Naiditsch, Arkadij – 1/2-1/2 – Mamedyarov, Shakhriyar – G27
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 Nbd7 6. O-O e6 7. Be3 Be7 8. h3 Bh5 9. a4 O-O 10. Nd2 Bxe2
Lindores Abbey Tal Memorial 2021 – Round 18.20 – Adhiban, B. – 1/2-1/2 – Jobava, Baadur – G761
1. d4 d6 2. Nc3 Nf6 3. e4 c6 4. Nf3 Bg4 5. h3 Bxf3 6. Qxf3 1/2-1/2
World Blitz 2017 – Round 5.10 – Zhigalko, Sergei – 0-1 – Petrosian, Tigran L. – G235
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Qa5 5. Bd3 e5 6. O-O Be7 7. Bd2 Qc7 8. h3 O-O 9. a4 a5 10. Re1 h6
World Blitz 2018 – Round 9.23 – Kovalev, Vladislavadislav – 1-0 – Petrosian, Tigran L. – G525
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Qa5 5. Bd3 e5 6. O-O Be7 7. h3 O-O 8. Re1 Re8 9. a4 Nbd7 10. Bd2 Qc7
World Rapid 2016 – Round 1.15 – Zhigalko, Sergei – 1-0 – Zhang, Zhong – G7
1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bh5 6. g4 Bg6 7. Bd3 e6 8. g5 Nfd7 9. Be3 Bh5 10. Be2 d5

B07o — Czech (1931)
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Nf3
Les coups candidats
4…Bg4 — 68.4% (3730 parties)
Ambassadeurs : Pribyl, Josef (24x), Villing, Dieter (23x), De Santis, Alessio (21x), Galego, Luis (20x), Krasenkow, Michal (20x), Willmoth, Robert F (14x), Mira, Helene (14x), Pakleza, Zbigniew (11x)
4…g6 — 12.0% (652 parties)
Ambassadeurs : Stuhlik, Marko (10x), Breustedt, Werner (6x), Tochtermann, Georg, Dr. (5x), Toth, Kazmer (5x), Barc, Michal (4x), Garbarino, Rodolfo (3x), Vukovic, Ivo (3x), Hidalgo Santana, Fernando (3x)
4…Qa5 — 10.9% (592 parties)
Ambassadeurs : Szirmai, Eduard (8x), Ivanov, Alexander Al. (6x), Gionfriddo, Mario (6x), De Borba, Gabriel (5x), Rakhmangulov, Andrei (5x), Watfe, Rodrigo (4x), Ratcu, Tatiana (4x), Forster, William (4x)
4…Nbd7 — 3.5% (191 parties)
Ambassadeurs : Gazik, Igor (2x), Chabot, Roland (2x), Sourek, Vladimir (2x), Dobrowolski, Marcin (2x), Manilyk, Andrei (2x), Gil Juan, German (2x), Malakhova, Elizaveta (2x), Damjanovic, Adam (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bg4 4…g6 4…Qa5 4…Nbd7
<1800 467 59% 13% 15% 7%
1800-2200 2634 67% 12% 11% 4%
2200-2600 1549 76% 11% 8% 1%
2600+ 16 69% 12% 19%
Évolution par décennie (% des parties)
Décennie N parties 4…Bg4 4…g6 4…Qa5 4…Nbd7
1950s 12 92% 8%
1960s 14 29% 64%
1970s 12 42% 42% 8%
1980s 153 77% 12% 7% 1%
1990s 1314 72% 12% 10% 2%
2000s 1686 69% 11% 10% 4%
2010s 1804 68% 12% 10% 4%
2020s 456 57% 12% 24% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bg4 68% 57% ▼ -10.8%
4…g6 12% 12% +0.2%
4…Qa5 10% 24% ▲ +14.1%
4…Nbd7 4% 2% ▼ -2.2%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Karpov, Anatoly — 1 partie
Hou, Yifan — 1 partie
Parties historiques
4…Bg4 — 68.4% (3730 parties)
1952 — Averbakh, Yuri L vs Simagin, Vladimir — 0-1 — Moscow RUS
1953 — Shaposhnikov, Yury vs Strekalovski, Viktor — 1-0 — Leningrad RUS
1955 — Kasparian, Genrikh vs Matskevich, Avshalom — 1/2-1/2 — chT
1955 — Dubinin, Peter vs Shaposhnikov, Yury — 1-0 — corr ch-SU
1956 — Balogh, Janos vs Napolitano, Mario — 1/2-1/2 — ?
4…g6 — 12.0% (652 parties)
1958 — Piazzini, Luis vs Dominguez, Cristobal — 1/2-1/2 — Buenos Aires ARG
1961 — Giustolisi, Alberto vs Sanz Aguado, Jose — 1-0 — Reggio Emilia ITA
1961 — Canal, Esteban vs Sanz Claramonte, Jose A. — 1-0 — Reggio Emilia ITA
1962 — Sokolov, Vladimir vs Udovcic, Mijo — 1/2-1/2 — JUG-ch Skopje MKD
1963 — Kluger, Gyula vs Koberl, Ferenc — 1/2-1/2 — Budapest ch-HUN
4…Qa5 — 10.9% (592 parties)
1985 — Roselli, Juan Pablo vs Etcheverry, Eduardo — 0-1 — Uruguay
1988 — Magomedov, Magaram vs Kantsler, Boris — 0-1 — Tallinn EST
1989 — Groszpeter, Attila vs Radulov, Ivan — 1-0 — Biel open
1989 — Vreeken, Corry vs Prins, Lodewijk — 0-1 — Palma de Mallorca open
1989 — Moldobaev, Emil vs Kantsler, Boris — 1-0 — Frunze KGZ
4…Nbd7 — 3.5% (191 parties)
1974 — Damjanovic, Adam vs Udovcic, Tibor — 1-0 — Yugoslavia
1987 — Gallagher, Joseph G. vs Gazik, Igor — 1-0 — Geneva SUI
1987 — Gosig vs Gazik, Igor — 1-0 — Budapest HUN
1990 — Huss, Rolf vs Just, Hannes — 0-1 — Hessen
1990 — Enkhbat, Tegshsuren vs Meister, Jakob — 0-1 — Chelyabinsk RUS

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