Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	● c4, ● c6
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● b7→c6
Passés	—	—
Majorité	—	● aile dame 4v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v0), ● g5 (2v0)	● d5 (2v1)
Cases faibles	—	—
Centre	● d4 (2v0), ● e4 (1v0), ● e5 (2v0)	● d5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
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	—	● …c6-c5, ● …e7-e5

D16b — Slav: 5.a4 Nd5

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Nd5 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. e4 (Occuper le centre — 58 % des parties) ; e3 (Libérer Bf1, préparer Bd3 — 16 % des parties) ; a5 (13 % des parties) ; Ne5 (Cavalier centralisé en e5 — 10 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nxc3 (Menace d1 — 84 % des parties) ; ...Bf5 (Fou actif (mobilité 10), Développer c8 — 10 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1923 Pardubice – Round 8 – Pokorny, Amos – 1-0 – Sifalda Vaclav – G8 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Nd5 6. e3 Bg4 7. Bxc4 e6 8. O-O Nd7 9. h3 Bh5 10. Be2 Be7
1931 Trebitsch mem14 – Round 6 – Metanomski, Leonhard – 1-0 – Glass, Eduard – G20 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. a4 Bf5 6. Nh4 Bc8 7. Nf3 Nd5 8. e4 Nxc3 9. bxc3 b5 10. Ne5 g6
1936 Dresden – Round 3 – Saemisch, Friedrich – 1-0 – Helling, Karl – G17 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Nd5 6. e3 b5 7. Ne5 Be6 8. axb5 Nxc3 9. bxc3 cxb5 10. Qf3 Qd5
1952 Havana – Round 23 – Aguilar Aleman, Diego Ignacio – 0-1 – Evans Lianda – G159 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Nd5 6. e4 Nxc3 7. bxc3 b5 8. Ne5 e6 9. Qh5 Qc7 10. Be2 Bd6
1953 URS-training – Round 5 – Taimanov, Mark E – 1-0 – Tolush, Alexander V – G16 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 c6 5. a4 Nd5 6. e4 Nxc3 7. bxc3 b5 8. Ba3 Bg4 9. Be2 a6 10. O-O Nd7
1958 YUG Ch 13th – Round 7 – Vukovic, Vladimir – 1/2-1/2 – Ivkovic, Dusan – G36 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Nd5 6. e4 Nxc3 7. bxc3 b5 8. e5 e6 9. Ng5 h6 10. Qh5 Qd7
1960 Olympiad prel I – Round 6 – Bobotsov, Milko G – 1/2-1/2 – Johannessen, Svein – G16 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Nd5 6. a5 Bf5 7. e3 Nb4 8. e4 Bg4 9. Be3 Bxf3 10. gxf3 Nd3+
1962 Belgrade – Round 1 – Foguelman, Alberto – 0-1 – Johannessen, Svein – G3 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Nd5 6. e3 Nxc3 7. bxc3 b5 8. Ne5 Qd5 9. axb5 cxb5 10. Ra5 Qb7
1967 BRA Ch – Round 4 – Rocha, Antonio – 1-0 – Mangini, Jose Henrique de Mello – G10 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Nd5 6. e3 Nxc3 7. bxc3 b5 8. Ne5 Qd5 9. Be2 f6 10. Bf3 Qd6
1968 Lublin PKWN 4th – Round 2 – Szilagyi, Gyorgy Laszlo – 1-0 – Cibulka, Vladimir – G4 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Nd5 6. e4 Nxc3 7. bxc3 b5 8. Be2 g6 9. h4 h5 10. Bf4 Bg7

D16b — Slav (1923)

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Nd5

Les coups candidats

6.e4 — 64.8% (230 parties)

Ambassadeurs : Bussman, Henrique (3x), Wittmann, Georg (3x), Bittencourt Filho, Luiz Ruppel (2x), Pali, Gabor (2x), Shulgin, Viktor (2x), Erica Arinda (1x), Van Norden, Dr. H.J (1x), Pines, Michael (1x)

6.e3 — 15.8% (56 parties)

Ambassadeurs : Lioubomirov, D. (2x), Anton, Aurel Ing (2x), Rocha, Antonio (1x), Mangini, Jose Henrique de Mello (1x), Faleg, Alberto (1x), Johannessen, Svein (1x), Eberlein, Robert (1x), Celeste, Axel (1x)

6.a5 — 7.9% (28 parties)

Ambassadeurs : Bobotsov, Milko G (1x), Johannessen, Svein (1x), Laska, Karol (1x), Hurt, Miroslav (1x), Tarasov, Vitaly (1x), Shvedchikov, Anatoli I. (1x), Sobrado Acevedo, Hernan (1x), Quintana Ramon (1x)

6.Ne5 — 4.8% (17 parties)

Ambassadeurs : Johannessen, Svein (2x), Wittmann, Georg (2x), Uhlmann, Wolfgang (1x), Espinosa Escala, Rafael Mario (1x), Alvarez Cespedes, Leonardo Valentin (1x), Gerusel, Mathias (1x), Razuvaev, Yuri S (1x), Lushnikin (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.e4	6.e3	6.a5	6.Ne5
<1800	40	68%	12%	12%	—
1800-2200	189	67%	14%	7%	6%
2200-2600	38	50%	24%	16%	3%

Évolution par décennie (% des parties)

Décennie	N parties	6.e4	6.e3	6.a5	6.Ne5
1950s	10	80%	—	10%	10%
1960s	9	44%	22%	22%	11%
1970s	4	—	50%	25%	25%
1980s	20	45%	40%	—	5%
1990s	79	70%	16%	3%	1%
2000s	106	63%	21%	8%	5%
2010s	112	68%	8%	10%	6%
2020s	15	73%	—	20%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.e4	68%	73%	▲ +5.5%
6.e3	8%	0%	▼ -8.0%
6.a5	10%	20%	▲ +10.2%
6.Ne5	6%	0%	▼ -6.2%

Parties historiques

6.e4 — 64.8% (230 parties)

1952 — Erica Arinda vs Van Norden, Dr. H.J — 1-0 — ?
1952 — Aleman Munoz Jorge Luis vs Evans Lianda — 0-1 — Havana CUB
1952 — Gligoric, Svetozar vs Woolfe, L. — 0-1 — ?
1952 — Abdou, William vs Woolfe, Howard S — 0-1 — No. California
1953 — Taimanov, Mark vs Alexander Tadala — 1-0 — Gagra

6.e3 — 15.8% (56 parties)

1962 — Faleg, Alberto vs Johannessen, Svein — 0-1 — Belgrade SRB
1967 — Rocha, Antonio vs Mangini, Jose Henrique de Mello — 1-0 — Sao Paulo BRA
1976 — Turi, Samuel vs Khashoff, A. — 1-0 — cr.
1977 — Eberlein, Robert vs Celeste, Axel — 1-0 — Atlantic City
1982 — Aabid Ahmed Saeed vs Adela Bermudez Zuniga — 1-0 — Rio de Janeiro jr

6.a5 — 7.9% (28 parties)

1958 — Laska, Karol vs Hurt, Miroslav — 0-1 — Zlin CZE
1960 — Bobotsov, Milko G vs Johannessen, Svein — 1/2-1/2 — Leipzig GER
1964 — Tarasov, Vitaly vs Shvedchikov, Anatoli I. — 1/2-1/2 — Irkutsk
1970 — Sobrado Acevedo, Hernan vs Quintana Ramon — 0-1 — ?
1991 — Fassnacht, Peter vs Kropp, Volker — 1/2-1/2 — Ingelheim

6.Ne5 — 4.8% (17 parties)

1959 — Espinosa Escala, Rafael Mario vs Alvarez Cespedes, Leonardo Valentin — 0-1 — ?
1960 — Uhlmann, Wolfgang vs Johannessen, Svein — 1/2-1/2 — Stockholm SWE
1970 — Gerusel, Mathias vs Johannessen, Svein — 1/2-1/2 — ?
1982 — Razuvaev, Yuri S vs Lushnikin — 1-0 — Soviet Union
1998 — Demasi, Joao vs Moreda, Lucas — 0-1 — Pan American-chJ