Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● e2, ● e5	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● g5 (2v0)	● b4 (2v0), ● f5 (2v0)
Cases faibles	● d4	—
Centre	—	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 2)
Bg4		● Bg4 Actif (mob. 5)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	3 (● g8, ● f8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● e2-e3, ● e5-e6	● …d4-d3, ● …f7-f6

D09l — QGD: Albin, 5.g3 Bg4 6.Bg2 Qd7 7.O-O O-O-O

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Bg4 6.Bg2 Qd7 7.O-O O-O-O * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Qb3 (Dame très active (15 cases) — 40 % des parties) ; Nbd2 (Développer b1 — 26 % des parties) ; Qa4 (15 % des parties) ; a3 (Préparer expansion aile dame — 9 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nge7 (Développer g8 — 30 % des parties) ; ...h5 (23 % des parties) ; ...Kb8 (11 % des parties) ; ...Bh3 (10 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
? 1986 – Round ? – Korchnoi, Viktor – 1/2-1/2 – Gegner, Jurgen – G3 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Nbd2 h5 9. b4 Nxb4 10. Qb3 h4
1942 Moscow – Round 1 – Zagoriansky, Evgeny – 1-0 – Panov, Vasily – G3 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Qa4 Nge7 9. Nbd2 Kb8 10. Rd1 Qf5
1963 GDR Ch Aschersleben GER – Round 16 – Golz, Werner – 1-0 – Hennings, Artur – G82 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Qb3 Nge7 9. Rd1 Qf5 10. Na3 Ng6
1964 Chigorin Memorial – Round 12 – Spassky, Boris V. – 1-0 – Forintos, Gyozo V – G76 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Qb3 Bh3 9. e6 Bxe6 10. Ne5 Qd6
1964 URS Spartakiad – Round ? – Polugaevsky, Lev – 1/2-1/2 – Vasiukov, Evgeni – G8 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Qa4 Kb8 9. Nbd2 Nge7 10. Nb3 Nc8
1966 URS Team Ch – Round 1 – Korchnoi, Viktor – 1-0 – Mosionzhik, Ilya – G17 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Nbd2 Nge7 9. Qa4 Ng6 10. b4 Kb8
1968 URS Team Ch – Round 1 – Shamkovich, Leonid – 1-0 – Mosionzhik, Ilya – G24 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Nbd2 Nge7 9. Ne4 Ng6 10. Qa4 Kb8
1969 Leningrad – Round 1 – Korchnoi, Viktor – 1-0 – Mosionzhik, Ilya – G2 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4 6. Bg2 Qd7 7. O-O O-O-O 8. Nbd2 Bh3 9. Nb3 Bxg2 10. Kxg2 Qe6

D09l — QGD: Albin (1942)

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Bg4 6.Bg2 Qd7 7.O-O O-O-O

Les coups candidats

8.Qb3 — 39.5% (178 parties)

Ambassadeurs : Schlemmer, Hans, Dr. (6x), Reprintsev, Alexander (5x), Roeder, Matthias (4x), Schaedlich, Michael (3x), Conde, Jose Antonio (3x), Veinger, Itzhak (2x), De Sa, Aurelio (2x), Hasler, Ulrich (2x)

8.Nbd2 — 25.9% (117 parties)

Ambassadeurs : Korchnoi, Viktor (3x), Mosionzhik, Ilya (3x), Meszaros, Gyula (3x), Vatter, Hans-Joachim (2x), Torok, Sandor (2x), Van der Marel, Lambertus (2x), Navarovszky, Laszlo (1x), Pacsay, Laszlo (1x)

8.Qa4 — 15.3% (69 parties)

Ambassadeurs : Engel Christian (2x), Mueller, Dieter (2x), Kozlovskaya, Valentina (1x), Saakova, Anzhelina (1x), Polugaevsky, Lev (1x), Vasiukov, Evgeni (1x), From, Sigfred (1x), Christensen, Johannes M (1x)

8.a3 — 9.3% (42 parties)

Ambassadeurs : Byggmastar, Lars (2x), Jossien, Remy (2x), Ojala, Kauko (1x), Pierce, PN. (1x), Wand, D. (1x), Lotz, Kolja (1x), Pommerin, Berit (1x), Maniocha, Marek (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Qb3	8.Nbd2	8.Qa4	8.a3
<1800	25	24%	32%	24%	12%
1800-2200	214	34%	25%	18%	11%
2200-2600	97	45%	35%	11%	4%

Évolution par décennie (% des parties)

Décennie	N parties	8.Qb3	8.Nbd2	8.Qa4	8.a3
1960s	14	29%	29%	21%	—
1970s	8	38%	25%	12%	12%
1980s	36	56%	19%	17%	3%
1990s	142	43%	29%	14%	6%
2000s	173	36%	25%	16%	13%
2010s	72	38%	24%	15%	11%
2020s	6	17%	33%	17%	33%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Qb3	38%	17%	▼ -20.8%
8.Nbd2	24%	33%	▲ +9.7%
8.Qa4	15%	17%	▲ +1.4%
8.a3	11%	33%	▲ +22.2%

Parties historiques

8.Qb3 — 39.5% (178 parties)

1963 — Golz, Werner vs Hennings, Artur — 1-0 — GDR-ch Aschersleben GER
1964 — Spassky, Boris V. vs Forintos, Gyozo V — 1-0 — Sochi RUS
1964 — Silakov, Alexander vs Khaunin — 1/2-1/2 — Leningrad RUS
1969 — Dalko, Nandor vs Da Rocha, T. — 1-0 — cr.
1971 — Sterngold, Susan vs Oshana, David J — 1-0 — Illinois

8.Nbd2 — 25.9% (117 parties)

1960 — Navarovszky, Laszlo vs Pacsay, Laszlo — 1-0 — ?
1966 — Korchnoi, Viktor vs Mosionzhik, Ilya — 1-0 — Moscow RUS
1968 — Shamkovich, Leonid vs Mosionzhik, Ilya — 1-0 — Riga LAT
1969 — Korchnoi, Viktor vs Mosionzhik, Ilya — 1-0 — Leningrad RUS
1970 — Formanek, Edward vs Oshana, David J — 0-1 — Chicago, IL USA

8.Qa4 — 15.3% (69 parties)

1960 — From, Sigfred vs Christensen, Johannes M — 0-1 — ?
1964 — Polugaevsky, Lev vs Vasiukov, Evgeni — 1/2-1/2 — URS Spartakiad
1969 — Kozlovskaya, Valentina vs Saakova, Anzhelina — 1-0 — Soviet Union
1979 — Ostberg, Peter vs Unander, Matts — 1-0 — Sundsvall
1981 — Zimmermann, Andre vs Businger, Paul — 0-1 — Zurich SUI

8.a3 — 9.3% (42 parties)

1970 — Pierce, PN. vs Wand, D. — 1-0 — Manchester ENG
1982 — Ojala, Kauko vs Byggmastar, Lars — 0-1 — ?
1990 — Timar, Zsolt vs Balazs, Tibor — 0-1 — Berze Janos
1990 — Ogala, K vs Byggmastar, Lars — 0-1 — FIN corr
1991 — Mileto, Gabriele vs Mannaert, Erwin — 1-0 — Madonna di Campiglio