Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● f7→g6, h7→g6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● c5 (2v1), ● d5 (3v0), ● g5 (2v0)	—
Cases faibles	—	● e5
Centre	● d4 (2v1), ● d5 (3v0), ● e4 (1v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 2)
Bg7		● Bg7 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	—	● pawn f7
Non développées	4 (● c1, ● f1, ● a1, ● h1)	3 (● b8, ● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre	● Roqué
Droits de roque	O-O / O-O-O	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	—	● …c7-c5, ● …e7-e5, ● …f7-f5

D97a — Gruenfeld: Russian, 7.e4 Nfd7

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Nfd7 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Be3 (Fou actif (mobilité 5), Développer c1 — 89 % des parties) ; Bf4 (Fou actif (mobilité 9), Développer c1 — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Nb6 (Menace c4 — 72 % des parties) ; ...Nc6 (Développer b8 — 19 % des parties) ; ...Na6 (Développer b8 — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1947 Hungary – Round 1 – Gereben, Erno – 1/2-1/2 – Sandor, Bela – G15 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be2 Nb6 9. Qd3 Bg4 10. Be3 Nc6
1948 Budapest – Round 6 – Wood, Baruch – 0-1 – Gereben, Erno – G33 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Bf4 c6 9. Rd1 b5 10. Qb3 a5
1948 Budapest HUN – Round 5 – Tomovic, Vasilje – 1/2-1/2 – Barcza, Gedeon – G11 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be3 Nb6 9. Qd3 Bg4 10. Ng5 e5
1951 New York ch-USA – Round 2 – Shainswit, George – 0-1 – Evans Lianda – G7 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Bf4 c6 9. Rd1 Nb6 10. Qb3 Be6
1959 Providence – Round 1 – Auerbach, Clarence – 1-0 – Barry Bertomeu, Enrique – G3 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be3 Nb6 9. Qd3 Nc6 10. a3 e5
1960 Aalborg – Round 7 – Hamann, Svend – 0-1 – Kolvig, Bent – G42 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be3 Na6 9. a3 c5 10. dxc5 Ndxc5
1965 Vancouver – Round 11.4 – Leonard, Ron – 1/2-1/2 – Yanofsky, Daniel Abraham – G10 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be3 Nc6 9. Be2 Nb6 10. Qc5 Bg4
1966 Aarhus – Round 1 – Blom, Kaj – 0-1 – Pedersen, Eigil – G12 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be3 Nb6 9. Qb3 Nc6 10. d5 Ne5
1968 CSR Ch – Round 11 – Trapl, Jindrich – 1/2-1/2 – Kupka, Slavoj – G97 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be3 Nb6 9. Qb3 Nc6 10. d5 Ne5
1968 Prague U26 – Round 5 – Spesny, Jan – 0-1 – Kupka, Slavoj – G20 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Be3 Nb6 9. Qc5 c6 10. Rd1 Bg4
1969 Monte Carlo – Round 1 – Bronstein, David I – 1/2-1/2 – Gheorghiu, Florin – G20 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nfd7 8. Bg5 Nc6 9. Rd1 Nb6 10. Qc5 Qd6

D97a — Gruenfeld: Russian (1947)

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Nfd7

Les coups candidats

8.Be3 — 74.6% (255 parties)

Ambassadeurs : Orseth, Dag (4x), Yanofsky, Daniel Abraham (3x), Plat, Vojtech (3x), Kolvig, Bent (2x), Schroeder, Christian, Dr. (2x), Pietzsch, Wolfgang (2x), Rapaka Samuel Paul (2x), OBrien, Erik Michael (2x)

8.Bf4 — 11.7% (40 parties)

Ambassadeurs : Karasev, Vladimir (1x), Zheliandinov, Viktor (1x), Shainswit, George (1x), Evans, Larry (1x), Diaz Suarez, Hugo (1x), francisco, j san claudio (1x), Botsari, Anna-Maria (1x), Nirmala, P. (1x)

8.Be2 — 6.1% (21 parties)

Ambassadeurs : Cordioli, Lourenco Joao (1x), Carvalho, Flavio (1x), Blackburn, Jonathan L B (1x), Varley, Peter (1x), Madila Pavol (1x), Feher, Mikulas (1x), Mirowicz, J. (1x), Sokolik, Bogdan (1x)

8.Qb3 — 4.1% (14 parties)

Ambassadeurs : Ganic, Martin (1x), Boric, Muhamed (1x), Wenzel, Reinhard (1x), Schruefer, Guenther, Dr. (1x), Engbraten, Stein-E (1x), Orseth, Dag (1x), Siegler, Wolfgang (1x), Schneider, Wolfram (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Be3	8.Bf4	8.Be2	8.Qb3
<1800	14	64%	14%	14%	7%
1800-2200	128	68%	16%	5%	5%
2200-2600	124	83%	6%	6%	2%
2600+	2	50%	—	50%	—

Évolution par décennie (% des parties)

Décennie	N parties	8.Be3	8.Bf4	8.Be2	8.Qb3
1950s	10	90%	10%	—	—
1960s	24	88%	4%	4%	—
1970s	10	80%	—	—	20%
1980s	29	86%	7%	—	3%
1990s	68	69%	10%	9%	7%
2000s	80	68%	18%	6%	5%
2010s	93	73%	13%	9%	2%
2020s	28	82%	11%	4%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Be3	73%	82%	▲ +9.0%
8.Bf4	13%	11%	▼ -2.2%
8.Be2	9%	4%	▼ -5.0%
8.Qb3	2%	0%	▼ -2.2%

Parties historiques

8.Be3 — 74.6% (255 parties)

1950 — O'Kelly de Galway, Alberic vs Niephaus, Walter — 1-0 — Saarbruecken
1950 — Wood, Gabriel vs Collins Justin — 1-0 — corr Wch1
1952 — Rhodes, Herbert Gibson vs Yanofsky, Daniel Abraham — 1/2-1/2 — Southsea
1953 — Golz, Werner vs Reichenbach, Werner — 1/2-1/2 — Brandenburg/Havel
1955 — Oestreich, Reinhard vs Van Wyk Wilhelm — 0-1 — Bochum GER

8.Bf4 — 11.7% (40 parties)

1951 — Shainswit, George vs Evans, Larry — 0-1 — New York ch-USA
1966 — Karasev, Vladimir vs Zheliandinov, Viktor — 0-1 — Moscow RUS
1988 — Botsari, Anna-Maria vs Nirmala, P. — 1-0 — Thessaloniki GRE
1989 — Diaz Suarez, Hugo vs francisco, j san claudio — 1/2-1/2 — ?
1990 — Wachtel, H. vs Colias, Billy — 1-0 — Illinois

8.Be2 — 6.1% (21 parties)

1960 — Cordioli, Lourenco Joao vs Carvalho, Flavio — 1/2-1/2 — Sao Paulo BRA
1992 — Mirowicz, J. vs Sokolik, Bogdan — 0-1 — corr Czerniak mem
1994 — Cerpa Deniz, Jose Manuel vs Prada Rubin, Fernando — 1/2-1/2 — Las Palmas ESP
1996 — Sorensen, Carsten Wagner vs Aegerter, Martin — 0-1 — Illinois Open
1998 — Herndl, Harald vs Mujovic, Sabahudin — 1-0 — Vienna AUT

8.Qb3 — 4.1% (14 parties)

1979 — Ganic, Martin vs Boric, Muhamed — 1/2-1/2 — Donji Milanovac
1979 — Engbraten, Stein-E vs Orseth, Dag — 0-1 — ?
1981 — Wenzel, Reinhard vs Schruefer, Guenther, Dr. — 0-1 — GER
1991 — Suarez, Jose Luis vs Petrone, Omar — 1-0 — Buenos Aires ARG
1993 — Shapiro, Daniel vs Steel, Sarel — 1-0 — Philadelphia, PA USA