Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● d5 (2v0)
Cases faibles	—	—
Centre	● d4 (1v0), ● e5 (1v0)	● d5 (2v0), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 0)
Bb2	● Bb2 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 4)
Paire de fous	● Oui	● Oui
Non développées	5 (● b1, ● g1, ● 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	—	● …c7-c5

A00p — Polish (Sokolsky;Orang-Utan)

1.b4 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. b5 (Expansion aile dame — 77 % des parties) ; a3 (Préparer expansion aile dame — 23 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...d5 (Occuper le centre — 44 % des parties) ; ...b6 (Préparer le fianchetto — 18 % des parties) ; ...c5 (Frapper le centre adverse — 14 % des parties) ; ...a6 (Préparer expansion aile dame — 11 % des parties) ; ...Be7 (Développer f8 — 5 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1924 New York – Round 1 – Tartakower, Savielly – 1/2-1/2 – Maroczy, Geza – G1 1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. e3 Be7 5. f4 O-O 6. Bd3 a6 7. a4 axb5 8. axb5 Rxa1 9. Bxa1 Nbd7 10. Nf3 Ne4
1930 Kent County Premier – Round 5 – Abrahams, Gerald – 0-1 – Yates, Frederic D – G11 1. b4 Nf6 2. Bb2 e6 3. a3 d5 4. e3 Nbd7 5. f4 c5 6. bxc5 Bxc5 7. Nf3 O-O 8. Bd3 Bd6 9. g4 Re8 10. Nc3 Nc5
1934 Sitges – Round 5 – Sunyer, Julio – 0-1 – Prins, Lodewijk – G26 1. b4 e6 2. Bb2 Nf6 3. a3 d5 4. e3 Bd6 5. c4 c6 6. Nf3 Nbd7 7. c5 Bc7 8. d4 Ne4 9. Nbd2 f5 10. Ne5 O-O
1938 URS Ch, semi final – Round 1 – Sokolsky, Alexey – 1-0 – Chekhover, Vitaly – G1 1. b4 Nf6 2. Bb2 e6 3. b5 b6 4. e3 Bb7 5. Nf3 Be7 6. c4 O-O 7. Be2 d5 8. a4 dxc4 9. Na3 c3 10. Bxc3 Nd5
1946 POL Ch – Round 10 – Matkowski, Wiktor – 0-1 – Plater, Kazimierz – G56 1. b4 Nf6 2. Bb2 e6 3. a3 d5 4. e3 Be7 5. Nf3 a5 6. b5 c5 7. a4 O-O 8. Be2 Nbd7 9. O-O Qc7 10. c4 e5
1950 Moskou ch-URS – Round 1 – Sokolsky, Alexey – 1/2-1/2 – Keres, Paul – G1 1. b4 e6 2. Bb2 Nf6 3. b5 c5 4. e3 d5 5. Nf3 Nbd7 6. c4 Bd6 7. d3 O-O 8. Nbd2 b6 9. Be2 Bb7 10. O-O Qe7
1951 URS Ch sf – Round 1 – Sokolsky, Alexey – 1-0 – Byvshev, Vasily – G1 1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. e3 a6 5. a4 Nbd7 6. Nf3 Bd6 7. c4 c5 8. d3 O-O 9. Nbd2 b6 10. Be2 Bb7
1954 Corr – Round 1 – Sturm, Achille – 0-1 – Heemsoth, Hermann – G1 1. b4 e6 2. Bb2 Nf6 3. a3 c5 4. b5 d5 5. e3 Bd6 6. Nf3 Nbd7 7. d4 O-O 8. dxc5 Nxc5 9. Nc3 Qc7 10. Be2 Rd8
1957 URS Ch, semi final – Round 14 – Sokolsky, Alexey – 1/2-1/2 – Sakharov, Yuri G. – G122 1. b4 Nf6 2. Bb2 e6 3. b5 b6 4. Nf3 Bb7 5. e3 Be7 6. c4 O-O 7. Nc3 d5 8. Be2 c5 9. cxd5 exd5 10. d4 Nbd7
1957 URS Ch, semi final – Round 8 – Sokolsky, Alexey – 1/2-1/2 – Geller, Efim P – G70 1. b4 Nf6 2. Bb2 e6 3. b5 a6 4. a4 Be7 5. e3 O-O 6. Nf3 axb5 7. axb5 Rxa1 8. Bxa1 d5 9. d4 c5 10. dxc5 Ne4
1958 OWL Ch – Round 8 – Oestreich, Reinhard – 1/2-1/2 – Juergens Norbert – G19 1. b4 Nf6 2. Bb2 e6 3. a3 b6 4. e3 Bb7 5. f4 a5 6. b5 c5 7. Nf3 Be7 8. Be2 O-O 9. O-O Ne8 10. d3 f5
1958 URS Ch sf – Round ? – Katalymov, Boris – 0-1 – Gipslis, Aivars – G3 1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. Nf3 c5 5. e3 Nbd7 6. d4 Bd6 7. c4 O-O 8. Qb3 a6 9. Nc3 axb5 10. Nxb5 Bb8
1959 Lodz ch POL – Round 6 – Szpakowski, Marek – 0-1 – Brzozka, Stefan – G27 1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. e3 Bd6 5. f4 Qe7 6. Nf3 O-O 7. Be2 Nbd7 8. Ne5 Ne4 9. O-O f6 10. Nxd7 Bxd7
1959 New York ch-USA – Round 9 – Bernstein, Sidney – 1-0 – Seidman, Herbert – G46 1. b4 Nf6 2. Bb2 e6 3. b5 a6 4. a4 axb5 5. axb5 Rxa1 6. Bxa1 d5 7. Nf3 Be7 8. e3 Nbd7 9. Be2 O-O 10. O-O Ne8
1960 Leningrad RUS – Round 1.2 – Spassky, Boris V. – 1/2-1/2 – Smyslov, Vladimir – G8 1. b4 Nf6 2. Bb2 e6 3. b5 a6 4. a4 axb5 5. axb5 Rxa1 6. Bxa1 c6 7. e3 d5 8. Nf3 Nbd7 9. c4 Qa5 10. Nc3 Nb6
1960 Ljubljana – Round 3 – Damjanovic, Mato – 0-1 – Gligorić, Svetozar – G29 1. b4 Nf6 2. Bb2 e6 3. a3 b6 4. Nf3 c5 5. b5 a6 6. e3 axb5 7. Bxb5 Be7 8. O-O O-O 9. c4 Bb7 10. d3 Nc6
1961 OWL Ch – Round 10 – Schoppmeyer Herbert – 1-0 – Oestreich, Reinhard – G13 1. b4 e6 2. Bb2 Nf6 3. b5 b6 4. e3 Bb7 5. f4 a6 6. c4 d5 7. Nf3 dxc4 8. Bxc4 axb5 9. Bxb5+ c6 10. Bc4 Bd6
1961 Zuerich – Round 7 – Kjaer Larsen, Maximillian C – 1-0 – Bhend, Edwin – G34 1. b4 e6 2. Bb2 Nf6 3. a3 c5 4. bxc5 Bxc5 5. e3 Nc6 6. Nf3 Be7 7. c4 O-O 8. Be2 b6 9. O-O Bb7 10. d3 d5
1961 Zuerich – Round 7 – Lombardy, William J – 1/2-1/2 – Schmid, Lothar – G35 1. b4 Nf6 2. Bb2 e6 3. a3 a6 4. b5 Be7 5. Nf3 O-O 6. g3 c5 7. Bg2 b6 8. O-O Bb7 9. d3 d5 10. Nbd2 Nbd7
1961 Zurich – Round 1 – Lombardy, William J – 1/2-1/2 – Schmid, Leo – G1 1. b4 Nf6 2. Bb2 e6 3. a3 a5 4. b5 Be7 5. Nf3 O-O 6. g3 c5 7. Bg2 b6 8. O-O Bb7 9. d3 d5 10. Nbd2 Nbd7
1963 Budapest ch-HUN – Round 1 – Flesch, Jean-benoit – 1/2-1/2 – Lengyel, Laszlo – G1 1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. e3 Be7 5. Nf3 O-O 6. c4 c5 7. Be2 Nbd7 8. a4 Bd6 9. O-O e5 10. cxd5 e4
1963 URS Spartakiad – Round ? – Zhitenev, Vladislav – 1-0 – Shamkovich, Leonid – G10 1. b4 e6 2. Bb2 Nf6 3. b5 d5 4. e3 a5 5. a4 c5 6. c4 b6 7. Nf3 Nbd7 8. Be2 Bb7 9. O-O Bd6 10. d4 Qc7
1964 1. division -65 – Round 1.2 – Sloth, Jorn – 1-0 – Hau Aage – G1 1. b4 e6 2. Bb2 Nf6 3. b5 a6 4. a4 d5 5. e3 c5 6. Nf3 Bd6 7. c4 axb5 8. axb5 Rxa1 9. Bxa1 Nbd7 10. Nc3 O-O
1964 Tel Aviv olm prel – Round 1 – Haralambof, Vladimir – 1/2-1/2 – Haygarth, Michael J – G1 1. b4 Nf6 2. Bb2 e6 3. b5 a6 4. a4 axb5 5. axb5 Rxa1 6. Bxa1 d5 7. Nf3 Nbd7 8. e3 Bd6 9. c4 c6 10. bxc6 bxc6
1965 Corr UDAPA – Round ? – Miraglia, Jorge – 0-1 – Morgado, Juan Sebastian – G1 1. b4 e6 2. Bb2 Nf6 3. a3 c5 4. bxc5 Bxc5 5. Nf3 Qb6 6. Qc1 Bxf2+ 7. Kd1 Bc5 8. Bxf6 gxf6 9. Nc3 Qa5 10. Qb2 d5
1966 FRA Ch Grenoble FRA – Round 11 – Caminade, Christian – 1/2-1/2 – Huguet, Bernard – G26 1. b4 e6 2. Bb2 Nf6 3. b5 d5 4. e3 Nbd7 5. Nf3 c5 6. Be2 Bd6 7. c4 b6 8. O-O Bb7 9. h3 O-O 10. Na3 Rc8
1966 FRA Ch Grenoble FRA – Round 6 – Caminade, Christian – 0-1 – Bergraser, Volf – G14 1. b4 e6 2. Bb2 Nf6 3. b5 d5 4. e3 Nbd7 5. Nf3 c5 6. Be2 a5 7. c4 Be7 8. O-O O-O 9. Qc2 b6 10. Nc3 Bb7
1966 La Habana olm fin-C – Round 4 – Kaplan, Julio – 1-0 – Dietrich Norbert – G8 1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. e3 c5 5. Nf3 Be7 6. Be2 O-O 7. O-O Nbd7 8. d3 Qc7 9. c4 dxc4 10. dxc4 b6
1967 It II Beverwijk NED – Round 3 – Keller, Dieter – 0-1 – Sandor, Bela – G3 1. b4 e6 2. Bb2 Nf6 3. a3 d5 4. e3 Nbd7 5. c4 dxc4 6. Bxc4 Nb6 7. Be2 Be7 8. Nf3 O-O 9. Qc2 Bd7 10. Nc3 a5
1968 Havirov – Round 6 – Sviridov, Valentin – 0-1 – Radovici, Corvin – G19 1. b4 Nf6 2. Bb2 e6 3. a3 d5 4. e3 c5 5. bxc5 Bxc5 6. Nf3 O-O 7. c4 Nc6 8. d4 Be7 9. Be2 b6 10. O-O Bb7
1969 JUG-24ch – Round 1 – Ljubojevic, Ljubomir – 0-1 – Matanovic, Aleksandar – G1 1. b4 Nf6 2. Bb2 e6 3. a3 a5 4. b5 c5 5. e3 b6 6. f4 d5 7. Nf3 Nbd7 8. Nc3 Bd6 9. Ne2 Qc7 10. g3 Bb7

A00p — Polish (1924)

1.b4 Nf6 2.Bb2 e6

Les coups candidats

3.b5 — 63.6% (2286 parties)

Ambassadeurs : Bulcourf, Carlos (32x), Buczinski, Henryk (25x), Ulaneo, Matias (23x), Labahn, Wolfgang (18x), Melich, Jindrich (17x), Boehnke, Hartmut (16x), Degterev, Pavel (16x), Nemec, Zdenek (14x)

3.a3 — 35.3% (1269 parties)

Ambassadeurs : Buczinski, Henryk (12x), Neumann, Frank (10x), Schmidbauer, Josef (8x), Schulz, Hans-Juergen (7x), Degterev, Pavel (7x), Diener, Rudolf (7x), Amor Alcaide, Manuel (6x), Woelfelschneider, Peter (6x)

3.e3 — 0.4% (14 parties)

Ambassadeurs : Neumann, Frank (2x), Roczniak, Jan (1x), Milcewicz, Jan (1x), Borrmann, Fritz (1x), Vahtera Manu (1x), Scheidacker, Mirko (1x), Schaltinat, Bernd (1x), Berlacki, Pierre (1x)

3.Nf3 — 0.2% (8 parties)

Ambassadeurs : Doroginsky, Igor (1x), Bulgakova, Valentina (1x), Wurm, Tamas (1x), Geiger, Walter (1x), Correia, Vitor Paie (1x), E Silva, Hamilton Moreira (1x), Franek, Mieczyslaw (1x), Ociepka, Tomasz (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	3.b5	3.a3	3.e3	3.Nf3
<1800	381	56%	41%	0%	1%
1800-2200	1575	59%	40%	0%	0%
2200-2600	321	61%	39%	0%	—
2600+	4	75%	25%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	3.b5	3.a3	3.e3	3.Nf3
1950s	33	73%	27%	—	—
1960s	84	74%	25%	1%	—
1970s	121	96%	4%	—	—
1980s	312	85%	14%	—	—
1990s	751	71%	29%	1%	—
2000s	1159	59%	39%	1%	0%
2010s	985	54%	44%	0%	0%
2020s	149	44%	54%	1%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
3.b5	54%	44%	▼ -10.6%
3.a3	44%	54%	▲ +9.9%
3.e3	0%	1%	▲ +0.6%
3.Nf3	0%	1%	▲ +0.9%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 1 partie
Gukesh D — 1 partie

Parties historiques

3.b5 — 63.6% (2286 parties)

1950 — Schiffler vs Braun, Alexander — 1-0 — cr.
1950 — Sokolsky, Boris vs Schifman — 1-0 — corr USSR
1950 — Sokolsky, Alexey vs Keres, Paul — 1/2-1/2 — Moskou ch-URS
1950 — Schiffler vs Arnold Klein Mudidi — 1-0 — Binz-Rugen
1950 — Schiffler vs Kiel, Bernd — 1/2-1/2 — cr.

3.a3 — 35.3% (1269 parties)

1952 — Brixhe, Abel vs Brixhe, Abel — 1-0 — ?
1954 — Sturm, Achille vs Heemsoth, Hermann — 0-1 — cr.
1955 — Roos, Nancy vs Gressler, Bernardo Frank — 1-0 — Los Angeles, CA USA
1956 — Stief, Siegfried vs Weber, Bernd, Dr. — 0-1 — Eisenach
1956 — Sturm, Achille vs Bonham, R. — 0-1 — corr Dyckhoff mem

3.e3 — 0.4% (14 parties)

1969 — Roczniak, Jan vs Milcewicz, Jan — 0-1 — Poland
1991 — Paltrinieri, Mario vs Jensen, Kristian Rohde — 1/2-1/2 — ?
1995 — Borrmann, Fritz vs Vahtera Manu — 1/2-1/2 — ?
1996 — Berlacki, Pierre vs Laux, Bernhard — 1/2-1/2 — Bad Liebenzell
1997 — Scheidacker, Mirko vs Schaltinat, Bernd — 1/2-1/2 — Spree

3.Nf3 — 0.2% (8 parties)

2002 — Doroginsky, Igor vs Bulgakova, Valentina — 0-1 — Kiev UKR
2006 — Wurm, Tamas vs Geiger, Walter — 0-1 — IECG
2010 — Woehl, Torsten vs Bender, Manfred — 0-1 — Frankfurt GER
2011 — Meszaros, Vilmos vs Kovacs, Szilveszter — 1/2-1/2 — Kisber
2012 — Correia, Vitor Paie vs E Silva, Hamilton Moreira — 0-1 — Sao Paulo BRA

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