Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● c5→b4, f7→e6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● c4 (2v0), ● e5 (2v0)	● e4 (2v0), ● d5 (4v1)
Cases faibles	—	—
Centre	● e5 (2v0)	● d5 (4v1), ● e4 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bb3	● Bb3 Actif (mob. 6)
Bb7		● Bb7 Actif (mob. 5)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	4 (● b8, ● f8, ● a8, ● h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● d4-d5	● …e6-e5

D29d — QGA: Classical, 8…Bb7 9.a4 b4

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 9.a4 b4 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Rd1 (56 % des parties) ; Nbd2 (Développer b1 — 37 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nbd7 (Développer b8 — 63 % des parties) ; ...Be7 (Développer f8 — 18 % des parties) ; ...Qc7 (Prépare O-O-O — 10 % des parties) ; ...Nc6 (Développer b8 — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1934 Trebitsch Memorial 17th – Round 5 – Hoenlinger, Baldur – 1/2-1/2 – Podhorzer, David – G6 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Nbd2 Nbd7
1940 URS-sf – Round 1 – Bondarevsky, Igor – 1-0 – Konstantinopolsky, Alexander – G8 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Bd3 dxc4 6. Bxc4 c5 7. O-O a6 8. Qe2 b5 9. Bb3 Bb7 10. a4 b4
1944 New York ch-USA – Round 1 – Di Camillo, Attilio – 0-1 – Shainswit, George – G10 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 a6 6. O-O c5 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Rd1 Qc7
1948 South Fallsburg ch-USA – Round 1 – Kramer, Gerald – 1/2-1/2 – Shainswit, George – G16 1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 Nf6 5. Bxc4 e6 6. O-O c5 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Rd1 Qc7
1952 JUG Ch Belgrade YUG – Round 9 – Bozic, Aleksandar – 0-1 – Andric, Dragoslav – G7 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Nbd2 Nc6
1957 USA Ch Open 58th – Round 9 – Fielding, Gerald – 0-1 – Byrne, Robert E – G60 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O c5 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Rd1 Be7
1960 It Bad Salzungen GER – Round 6 – Golz, Werner – 1/2-1/2 – Drozd, Ryszard – G25 1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 c5 5. Bxc4 Nf6 6. O-O e6 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Rd1 Qc7
1961 New York ch-USA – Round 7 – Weinstein, Raymond – 1-0 – Turner, Abe J – G32 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Rd1 Qc7
It, Dortmund GER 1997 – Round 3 – Jussupow, Artur – 0-1 – Anand, Viswanathan – G2 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Nbd2 Be7

D29d — QGA: Classical (1934)

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 9.a4 b4

Les coups candidats

10.Rd1 — 56.4% (124 parties)

Ambassadeurs : Kallai, Gabor (3x), Weinstein, Raymond (2x), Turner, Abe J (2x), Lanc, Alois (2x), Sadler, Matthew D (2x), Meessen, Rudolf (2x), Shea, Joseph (2x), Jonkman, Harmen (2x)

10.Nbd2 — 37.3% (82 parties)

Ambassadeurs : Chatalbashev, Boris (5x), Gaprindashvili, Nona (2x), Jussupow, Artur (2x), Anand, Viswanathan (2x), Drasko, Milan (2x), Mirzoev, Azer (2x), Sokolov, Ivan (2x), Hjelm, Niclas (2x)

10.a5 — 4.5% (10 parties)

Ambassadeurs : Obukhov, Alexander (2x), Kashtanov, Ruslan (1x), Mitenkov, Alexey (1x), Vulfson, Vladimir (1x), Ibragimov, Ildar (1x), Chytilek, Roman (1x), Talla, Vladimir (1x), Ruck, Robert (1x)

10.dxc5 — 0.9% (2 parties)

Ambassadeurs : Murshed, Niaz (1x), Ghorbani, Mohsen (1x), Kelly, Brian (1x), Dunnington, Angus J (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.Rd1	10.Nbd2	10.a5	10.dxc5
<1800	5	80%	20%	—	—
1800-2200	54	67%	28%	4%	—
2200-2600	140	52%	40%	6%	1%
2600+	3	33%	67%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	10.Rd1	10.Nbd2	10.a5	10.dxc5
1950s	4	50%	50%	—	—
1960s	4	75%	25%	—	—
1970s	1	—	100%	—	—
1980s	3	100%	—	—	—
1990s	81	49%	44%	4%	2%
2000s	83	54%	36%	8%	—
2010s	35	69%	29%	—	—
2020s	9	78%	22%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.Rd1	69%	78%	▲ +9.2%
10.Nbd2	29%	22%	▼ -6.3%
10.a5	0%	0%	+0.0%
10.dxc5	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 2 parties

Parties historiques

10.Rd1 — 56.4% (124 parties)

1954 — Fielding, Paul vs Amand, Harry — 0-1 — Hollywood
1957 — Fielding, Gerald vs Byrne, Robert E — 0-1 — Cleveland, OH USA
1960 — Golz, Werner vs Drozd, Ryszard — 1/2-1/2 — It Bad Salzungen GER
1961 — Weinstein, Raymond vs Turner, Abe J — 1-0 — New York ch-USA
1961 — Weinstein, Raymond vs Turner, Abe J — 1-0 — New York, NY USA

10.Nbd2 — 37.3% (82 parties)

1952 — Bozic, Aleksandar vs Abdi, Andreas — 0-1 — JUG-ch Belgrade YUG
1953 — Cafferty, Bernard vs Owen, HJ. — 1/2-1/2 — Kipping CC Wolverhampton
1960 — Bertholdt, Dieter vs Drozd, Ryszard — 1/2-1/2 — Halle GER
1978 — Portisch, Ferenc vs Cobo Arteaga, Eldis — 1-0 — Odzaci
1992 — Gaprindashvili, Nona vs Levitina, Irina — 1/2-1/2 — Shanghai CHN

10.a5 — 4.5% (10 parties)

1994 — Mitenkov, Alexey vs Vulfson, Vladimir — 1/2-1/2 — Moscow op Moscow RUS
1997 — Obukhov, Alexander vs Kashtanov, Ruslan — 0-1 — St.Petersburg open
1997 — Obukhov, Alexander vs Ibragimov, Ildar — 0-1 — Ekaterinburg RUS
2000 — Ruck, Robert vs Nguyen, Anh Dung — 1/2-1/2 — Budapest HUN
2001 — ? vs Galliamova, Alisa — 1/2-1/2 — Kazan RUS

10.dxc5 — 0.9% (2 parties)

1997 — Murshed, Niaz vs Ghorbani, Mohsen — 0-1 — Zone3.1 Tehran
1997 — Kelly, Brian vs Dunnington, Angus J — 1/2-1/2 — ?