Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● a2→b3, c2→b3, d2→e3, e3→f4
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes ● e5 (2v0), ● g5 (2v0) ● e4 (2v0), ● g4 (2v0)
Cases faibles
Centre ● d4 (2v1), ● e5 (2v0) ● d5 (2v0), ● e4 (2v0)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 2)
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 5 (● b1, ● 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 ● c2-c4, ● d2-d4, ● e3-e4 ● …c5-c4, ● …d5-d4, ● …e7-e5

A03c — Bird: Lasker, 3…c5 4.b3

1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.b3 *   ● 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
bN
bP
bP
Case forte (2v0)
Case forte (2v0)
wP
wP
wPPion central
wN
wP
wP
wP
wP
wP
wR
wN
wB
wQ
wK
wBFou actif — mobilité 5
wR
abcdefgh
Plans. Bb2 (Fianchetto, fou sur la grande diagonale — 67 % des parties) ; Bb5 (Fou actif (mobilité 9), Développer f1 — 24 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wB
wK
wQ
wB
wN
wR
wP
wP
wP
wP
wP
wN
wP
wP
Case forte (2v0)
wP
Avant-poste C (accessible)
bP
bP
bN
bP
bP
bP
bP
bP
bP
bR
bB
bK
bQ
bBFou actif — mobilité 5
bN
bR
hgfedcba
Plans. ...Nc6 (Développer b8 — 38 % des parties) ; ...g6 (Préparer le fianchetto — 29 % des parties) ; ...e6 (Poussée — 20 % des parties) ; ...Bg4 (Fou actif (mobilité 7), Développer c8 — 8 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
Partie
1902 DSB-13.Kongress – Round 3 – Mason, James – 0-1 – Von Bardeleben, Curt – G11
1. e3 d5 2. f4 Nf6 3. Nf3 c5 4. b3 e6 5. Bb2 a6 6. Be2 Nc6 7. O-O Bd6 8. Qe1 Ne7 9. Ne5 Qc7 10. d3 Ng6
1907 Ostende – Round 2 – Chigorin, Mikhail – 0-1 – Burn, Amos – G24
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 e6 5. Bb2 Be7 6. Nc3 O-O 7. Bd3 a6 8. Ne5 Nbd7 9. Qf3 Qc7 10. Nd1 Rd8
1927 Moskou ch-URS – Round 15 – Bohatyrchuk, Fedir Parfenovych – 1-0 – Makogonov, Vladimir – G42
1. f4 Nf6 2. Nf3 d5 3. e3 c5 4. b3 Nc6 5. Bb5 Bd7 6. Bb2 e6 7. O-O a6 8. Bxc6 Bxc6 9. d3 b5 10. Qe2 Be7
1929 Paris – Round 10 – Lazard, Frederic – 0-1 – Colle, Edgar – G43
1. f4 d5 2. Nf3 c5 3. e3 Nf6 4. b3 e6 5. Bb2 a6 6. Bd3 Nc6 7. O-O Bd6 8. Nc3 Qc7 9. a3 e5 10. fxe5 Nxe5
1929 Paris Paris FRA – Round 10 – Lazard, Frederic – 0-1 – Colle, Edgar – G13
1. f4 Nf6 2. b3 d5 3. Nf3 c5 4. e3 a6 5. Bb2 Nc6 6. Bd3 e6 7. O-O Bd6 8. Nc3 Qc7 9. a3 e5 10. fxe5 Nxe5
1931 Budapest – Round 13 – Rethy, Pal – 1/2-1/2 – Havasi, Kornel – G72
1. f4 d5 2. Nf3 Nf6 3. b3 c5 4. e3 Nc6 5. Bb2 e6 6. Ne5 Bd6 7. Bb5 Qc7 8. O-O O-O 9. Nxc6 bxc6 10. Bxf6 gxf6
1935 Buenos Aires – Round 8 – Pleci, Isaias – 1/2-1/2 – Fenoglio, Virgilio – G68
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 g6 5. Bb2 Bg7 6. c4 dxc4 7. Bxc4 O-O 8. O-O Nc6 9. Qe2 a6 10. a4 Nb4
1936 Nottingham – Round ? – Tartakower, Savielly – 1/2-1/2 – Lasker, Emanuel – G113
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 e6 5. Bb2 Bd6 6. Bd3 a6 7. O-O Nc6 8. c4 dxc4 9. Bxc4 O-O 10. Ne5 Ne7
1936 Nottingham – Round 1 – Tartakower, Savielly – 1/2-1/2 – Lasker, Emanuel – G50
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 a6 5. Bb2 e6 6. Bd3 Nc6 7. O-O Bd6 8. c4 dxc4 9. Bxc4 O-O 10. Ne5 Ne7
1939 Ventnor City – Round 8 – Ulvestad, Olaf – 1-0 – Levin Astorga, Nicolas Daniel – G16
1. f4 Nf6 2. Nf3 d5 3. e3 c5 4. b3 g6 5. Bb2 Bg7 6. Bb5+ Bd7 7. Bxd7+ Qxd7 8. Qe2 O-O 9. Nc3 Nc6 10. O-O Ne4
1942 Chocen NT – Round ? – Hromadka, Karel – 1-0 – Richter, Emil – G10
1. f4 d5 2. e3 Nf6 3. Nf3 c5 4. b3 e6 5. Bb2 Be7 6. Ne5 Nbd7 7. Qf3 Nxe5 8. fxe5 Nd7 9. Bd3 O-O 10. O-O b6
1947 Aalborg – Round 6 – Christensen, Alfred – 1/2-1/2 – Van Scheltinga, Theo – G23
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 g6 5. Bb2 Bg7 6. Bb5+ Nbd7 7. O-O O-O 8. Bxd7 Qxd7 9. Qe2 b6 10. d3 Ba6
1953 Bucharest – Round 18 – Barda, Olaf – 1-0 – Ciocaltea, Victor – G177
1. f4 Nf6 2. Nf3 c5 3. e3 d5 4. b3 e6 5. Bb2 Be7 6. Be2 O-O 7. O-O Nc6 8. Qe1 Ne4 9. d3 Nd6 10. g4 Bd7
1954 CSR Ch – Round 9.7 – Weiner, Milan – 0-1 – Sefc, Jan – G79
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Bg4 5. Be2 Nc6 6. Bb2 e6 7. Ne5 Bxe2 8. Qxe2 Qc7 9. O-O Bd6 10. d4 Bxe5
1954 OWL Ch – Round 5 – Illgen, Hans – 0-1 – Groenegress, Wilfried – G5
1. f4 d5 2. e3 c5 3. b3 Nf6 4. Nf3 Bg4 5. Bb2 e6 6. Bb5+ Nbd7 7. O-O Be7 8. h3 Bxf3 9. Qxf3 O-O 10. Bxd7 Nxd7
1955 Poland ch13 – Round 17 – Gawlikowski, Stanislaw – 0-1 – Balcarek, Wiktor – G61
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. Ne5 Qc7 8. Bb2 e6 9. O-O Bd6 10. d3 O-O
1955 Zittau-A 5th – Round 9 – Kahn, Manfred – 1/2-1/2 – Juettler Helmut – G35
1. f4 d5 2. Nf3 c5 3. e3 Nf6 4. b3 e6 5. Bb2 Bd6 6. Be2 Nc6 7. O-O Qc7 8. Qe1 e5 9. Qg3 Ng4 10. fxe5 Ncxe5
1959 FRG Ch qual 4th – Round 6 – Bialas, Wolfram – 1-0 – Hodakowsky, Georg – G14
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb5 Qb6 6. Bxc6+ Qxc6 7. Ne5 Qc7 8. Bb2 g6 9. c4 dxc4 10. bxc4 Bg7
1959 Mar del Plata – Round 1 – Wexler, Bernardo – 1/2-1/2 – Shocron, Ruben – G64
1. f4 d5 2. Nf3 c5 3. e3 Nf6 4. b3 g6 5. Bb5+ Nbd7 6. Bb2 Bg7 7. O-O O-O 8. a4 a6 9. Be2 b6 10. Qe1 Bb7
1961 Kiel – Round 6 – Brinckmann, Alfred – 1/2-1/2 – Skold, Kristian – G16
1. f4 d5 2. e3 c5 3. Nf3 Nf6 4. b3 Nc6 5. Bb5 g6 6. Bb2 Bg7 7. Bxc6+ bxc6 8. d3 O-O 9. Nbd2 a5 10. a4 Ba6
1966 Palermo Memorial – Round 1 – Bazan, Osvaldo – 0-1 – Herz, Enrique – G3
1. f4 d5 2. Nf3 c5 3. e3 Nf6 4. b3 g6 5. Bb2 Bg7 6. Bb5+ Bd7 7. a4 O-O 8. O-O Nc6 9. Qe1 a6 10. Be2 Qb6
1968 Alma Ata ch-URS – Round 8 – Zaitsev, Alexander – 1-0 – Klovans, Janis – G82
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 e6 5. Bb2 Be7 6. Bb5+ Bd7 7. a4 Nc6 8. O-O O-O 9. Bxc6 Bxc6 10. Ne5 Rc8
1968 POL Ch 25th – Round 3 – Filipowicz, Andrzej – 1/2-1/2 – Marszalek, Rafal – G16
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 g6 5. Bb2 Bg7 6. Be2 Nc6 7. O-O O-O 8. Qe1 d4 9. Qh4 a6 10. a4 Nb4
1968 POL Ch 25th – Round 9 – Filipowicz, Andrzej – 1/2-1/2 – Witkowski, Stefan – G54
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Bg4 5. h3 Bxf3 6. Qxf3 e6 7. Bb2 Be7 8. Bb5+ Nbd7 9. O-O O-O 10. Nc3 a6
1969 Ludwigsburg – Round ? – Zaitsev, Alexander – 1/2-1/2 – Pfleger, Helmut, Dr. – G15
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 g6 5. Bb2 Bg7 6. Bb5+ Bd7 7. a4 O-O 8. O-O Nc6 9. d3 Rc8 10. Bxc6 Bxc6
1969 Sweden – Round 1 – Ekenberg, Bengt – 1/2-1/2 – Alfredsson, Ove – G68
1. f4 Nf6 2. Nf3 d5 3. e3 c5 4. b3 Nc6 5. Bb2 e6 6. Bb5 Bd7 7. O-O Bd6 8. Bxc6 Bxc6 9. Ne5 Rc8 10. d3 O-O
1971 Moscow – Round 1 – Murey, Jacob – 1-0 – Shekhtman Eduard – G214
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb5 Bd7 6. Bb2 g6 7. Nc3 a6 8. Bxc6 Bxc6 9. Ne5 Rc8 10. Qf3 e6
1972 Skopje ol (Men) fin-A – Round 4 – Ljubojevic, Ljubomir – 1-0 – Zuidema, Coen – G362
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb5 Bd7 6. Bb2 e6 7. O-O Be7 8. a4 O-O 9. Ne5 Nxe5 10. fxe5 Ne8

A03c — Lasker (1902)
1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.b3
Les coups candidats
4…Nc6 — 40.1% (612 parties)
Ambassadeurs : Brodie, Hugh (7x), Heinola, Kari P. (5x), Thonig, Manfred (5x), Elkina, Yuliya (4x), Janning, Rainer (4x), Hanegby, Avigdor (3x), Paltrinieri, Nicholas (3x), Sonnenberger, Joerg (3x)
4…g6 — 30.1% (459 parties)
Ambassadeurs : Heinola, Kari P. (6x), Brodie, Hugh (6x), Grimm, Uwe (5x), Hanegby, Avigdor (3x), Prazmowski, Bartosz (3x), Kuhlemann, Claus (3x), Janning, Rainer (3x), Thonig, Manfred (3x)
4…e6 — 16.0% (245 parties)
Ambassadeurs : Brodie, Hugh (4x), Hogborg (2x), Nykonenko, Maksym (2x), Johansen, William (2x), Schoenegg, Werner (2x), Aufmwasser, Guenter (2x), Klinkhart, Thorbjoern (2x), Nichols, Scott (2x)
4…Bg4 — 7.2% (110 parties)
Ambassadeurs : Hanegby, Avigdor (3x), Brodie, Hugh (3x), Filipowicz, Andrzej (1x), Witkowski, Stefan (1x), Illgen, Hans (1x), Groenegress, Wilfried (1x), Weiner, Milan (1x), Sefc, Jan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nc6 4…g6 4…e6 4…Bg4
<1800 185 45% 26% 16% 6%
1800-2200 872 41% 31% 15% 7%
2200-2600 127 30% 46% 11% 8%
Évolution par décennie (% des parties)
Décennie N parties 4…Nc6 4…g6 4…e6 4…Bg4
1950s 13 23% 31% 31% 15%
1960s 18 28% 50% 17% 6%
1970s 25 36% 32% 28% 4%
1980s 60 33% 32% 17% 3%
1990s 290 40% 27% 19% 10%
2000s 510 40% 27% 16% 9%
2010s 477 43% 30% 14% 5%
2020s 134 36% 45% 10% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nc6 43% 36% ▼ -7.2%
4…g6 30% 45% ▲ +14.8%
4…e6 14% 10% ▼ -4.0%
4…Bg4 5% 2% ▼ -3.2%
Parties historiques
4…Nc6 — 40.1% (612 parties)
1953 — Fuderer, Andrija vs Bernstein, Ossip — 1-0 — Saarbruecken
1955 — Gawliczek, Andreas vs Balcarek, Wiktor — 0-1 — Poland ch13
1959 — Bialas, Wolfram vs Hodakowsky, Georg — 1-0 — Minden
1960 — Oettingen vs Yanushkovsky — 1-0 — USA
1961 — Schoppmeyer, Herbert vs Galle, Ernst — 1/2-1/2 — Rheda
4…g6 — 30.1% (459 parties)
1952 — Stoltz, Gösta vs Matanovic, Aleksandar — 1/2-1/2 — Stockholm izt
1952 — Vordank, Kurt vs Mueller, Klaus — 0-1 — Binz GER
1957 — Schroeder, Andre vs Martius, Ottokar — 0-1 — Hamburg GER
1959 — Wexler, Bernardo vs Shocron, Ruben — 1/2-1/2 — Mar del Plata ARG
1962 — Casati, Ettore vs Vespa, Lucrecia — 0-1 — cr.
4…e6 — 16.0% (245 parties)
1953 — Barda, Olaf vs Ciocaltea, Victor — 1-0 — Bucharest ROU
1954 — Laaber, Peter vs Hogborg — 1-0 — ?
1955 — Kahn, Manfred vs Juergens, Helmut — 1/2-1/2 — Zittau GER
1956 — Laaber, Reinhold vs Hogborg — 1-0 — Mindeturnering
1966 — Aarush Nikhil vs Both, Aaron — 1-0 — Saarland
4…Bg4 — 7.2% (110 parties)
1954 — Illgen, Hans vs Groenegress, Wilfried — 0-1 — Lemgo
1954 — Weiner, Milan vs Sefc, Jan — 0-1 — Prague CZE
1968 — Filipowicz, Andrzej vs Witkowski, Stefan — 1/2-1/2 — Lodz POL
1975 — Brodie, Hugh vs Leimanis, Eriks — 1/2-1/2 — Potsdam NY
1985 — Giardelli, Sergio C. vs Szmetan, Jorge — 1/2-1/2 — Buenos Aires ch-ARG

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