A30o — English: Symmetrical, Hedgehog, 7.Re1 d5

1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.Re1 d5 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte b5, paire de fous.
Faiblesses adverses : Be7 enfermé, roi noir au centre.
Problèmes : Bc1 enfermé.
Plans :
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte e4, case forte c5, paire de fous.
Faiblesses adverses : Bc1 enfermé, pawn c4 en prise.
Problèmes : roi au centre, Be7 enfermé, 3 pièces non développées (B8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Nbd7 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...d4 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A30o — Symmetrical Hedgehog

1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.Re1 d5

Eval: [+0.21]

Les coups candidats

8.cxd5 — 96.6% (956 parties)

Ambassadeurs : Ftacnik, Lubomir (18x), Akesson, Ralf (13x), Ulybin, Mikhail (12x), Browne, Walter Shawn (11x), Chuchelov, Vladimir (8x), Jurek, Josef (8x), Bar, Roman (7x), Szmetan, Jorge (6x)

8.Ne5 — 1.9% (19 parties)

Ambassadeurs : Mrva, Martin (2x), Mortensen, Vilhelm (1x), Olsen, Joe Flyckt (1x), Panno, Oscar (1x), Morovic Fernandez, Ivan (1x), Wirthensohn, Heinz (1x), Lim , Mingzhe (1x), Stepanov, Vladimir. (1x)

8.d4 — 1.5% (15 parties)

Ambassadeurs : Pitkaranta, Tauno (1x), Katishonok, Nikolaj (1x), Buechtmann Stefan (1x), Naumann, Klaus (1x), Garcia Rodriguez, Raimundo (1x), Ricardi, Pablo (1x), Zak, Uriel (1x), Bar, Roman (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.cxd5	8.Ne5	8.d4
<1800	5	100%	—	—
1800-2200	178	97%	2%	1%
2200-2600	668	97%	2%	1%
2600+	72	96%	—	4%

Évolution par décennie (% des parties)

Décennie	N parties	8.cxd5	8.Ne5	8.d4
1950s	1	100%	—	—
1960s	1	100%	—	—
1970s	9	100%	—	—
1980s	57	95%	5%	—
1990s	150	97%	1%	2%
2000s	354	95%	3%	2%
2010s	323	98%	2%	1%
2020s	95	99%	—	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.cxd5	98%	99%	▲ +1.4%
8.Ne5	2%	0%	▼ -1.5%
8.d4	1%	1%	+0.1%

Joueurs célèbres

Champions du monde dans cette position

Kramnik, Vladimir — 4 parties
Carlsen, Magnus — 3 parties
Karpov, Anatoly — 2 parties
Ju, Wenjun — 2 parties
Gukesh D — 2 parties
Anand, Viswanathan — 1 partie

Parties historiques

8.cxd5 — 96.6% (956 parties)

1951 — Coosemans, Billy vs Boey, Josef — 1-0 — Antwerp BEL
1960 — Peterson, Andrejs vs Antoshin, Vladimir S — 1/2-1/2 — Vilnius LTU
1974 — Shirazi, Kamran vs Sharif, Mehrshad — 0-1 — Iran
1976 — Taimanov, Mark vs Jansa, Vlastimil — 1/2-1/2 — Hastings ENG
1976 — Suba, Mihai vs Adamski, Jan — 1/2-1/2 — Sandomierz Vitrobud POL

8.Ne5 — 1.9% (19 parties)

1984 — Mortensen, Vilhelm vs Olsen, Joe Flyckt — 1/2-1/2 — DEN-Cup corr
1988 — Panno, Oscar vs Morovic Fernandez, Ivan — 1/2-1/2 — Vina del Mar CHI
1988 — Wirthensohn, Heinz vs Lim , Mingzhe — 1-0 — Olympiad Salonika GRE
1996 — Stepanov, Vladimir. vs Yunonin, Sergey Ragnarovich — 1-0 — ?
1999 — Vallejos, Marcelo vs Pinasco Juan Pablo — 1-0 — CAPA TORNEO EMAIL EM

8.d4 — 1.5% (15 parties)

1994 — Pitkaranta, Tauno vs Katishonok, Nikolaj — 0-1 — corr ch-Baltic
1995 — Garcia Rodriguez, Raimundo vs Ricardi, Pablo — 1/2-1/2 — Buenos Aires ARG
1998 — Buechtmann Stefan vs Naumann, Klaus — 0-1 — Ruhrgebiet
2000 — Sadkowski, Daniel vs Van der Stricht, Geert — 1-0 — Belgian Interteams 1999-2000
2001 — Zak, Uriel vs Bar, Roman — 1/2-1/2 — Tel Aviv ISR

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● b6→c5, e6→d5, a7→b6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0)	● e4 (2v1), ● c5 (2v0)
Cases faibles	—	—
Centre	● e5 (1v0)	● d5 (4v2), ● e4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Ok (mob. 3)
Bb7		● Bb7 Ok (mob. 3)
Be7		● Be7 Enfermé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	3 (b8, 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	semi-ouvert
Ruptures	● d2-d3, ● e2-e3	● …d5-d4, ● …e6-e5

Partie
10. Tal Mem 2016 – Round 5.2 – Aronian, Levon – 1/2-1/2 – Kramnik, Vladimir – G19 1. c4 e6 2. Nc3 c5 3. Nf3 Nf6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 Nxd5 9. d4 cxd4 10. Qa4+ Qd7
1960 URS Ch sf – Round 11 – Peterson, Andrejs – 1/2-1/2 – Antoshin, Vladimir S – G84 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. Nc3 Be7 7. Re1 d5 8. cxd5 Nxd5 9. e4 Nb4 10. d4 cxd4
41. Olympiad Open 2014 – Round 5.14 – Beliavsky, Alexander G – 1-0 – Elsness, Fredrik Valstad – G328 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. Re1 d5 8. cxd5 Nxd5 9. Nxd5 Bxd5 10. e4 Bb7
78. Tata Steel GpA 2016 – Round 12.1 – So, Wesley – 1/2-1/2 – Carlsen, Magnus – G78 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 Nxd5 9. e4 Nb4 10. d4 cxd4
Amber Blindfold, Monte Carlo MON 1998 – Round 9 – Ivanchuk, Vasyl – 1/2-1/2 – Van Wely, Loek – G19 1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Nbd7
Amber Rapid 2003 – Round 10 – Ljubojevic, Ljubomir – 0-1 – Leko, Peter – G22 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Nbd7
Amber Rapidplay 1999 – Round 8 – Kramnik, Vladimir – 1-0 – Karpov, Anatoly – G48 1. Nf3 Nf6 2. c4 b6 3. g3 c5 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. Re1 d5 8. cxd5 Nxd5 9. e4 Nb4 10. d4 cxd4
Amber-blindfold 15th 2006 – Round 2 – Van Wely, Loek – 1/2-1/2 – Leko, Peter – G3 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 Nxd5 9. e4 Nb4 10. d4 cxd4
Amber-blindfold 17th 2008 – Round 8 – Van Wely, Loek – 0-1 – Leko, Peter – G15 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 Nxd5 9. e4 Nb4 10. d4 cxd4
Credit Suisse 1997 – Round 10 – Gelfand, Boris – 1/2-1/2 – Pelletier, Yannick – G22 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Na6
FIDE World Cup 2015 – Round 2.1 – Yu, Yangyi – 1/2-1/2 – Lysyj, Igor – G204 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 Nxd5 9. e4 Nb4 10. d4 cxd4
Hoogovens 1998 – Round ? – Anand, Viswanathan – 1-0 – Van Wely, Loek – G66 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Nbd7
Hoogovens 1998 – Round 2 – Piket, Jeroen – 1/2-1/2 – Salov, Valery – G11 1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Na6
Investbanka 1997 – Round 4 – Kramnik, Vladimir – 1/2-1/2 – Ljubojevic, Ljubomir – G13 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. dxc5 bxc5
Mar del Plata 1982 – Round ? – Quinteros, Miguel Angel – 1/2-1/2 – Polugaevsky, Lev – G61 1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bg5 Nbd7
Mar del Plata 1982 – Round 1 – Quinteros, Miguel Angel – 1/2-1/2 – Polugaevsky, Lev – G56 1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bg5 Nbd7
Olympiad 2002 – Round 4 – Akopian, Vladimir – 1-0 – Ljubojevic, Ljubomir – G132 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Na6
PCA Qualifiers 1993 – Round 1 – Kramnik, Vladimir – 1-0 – Ribli, Zoltan – G3 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Nbd7
Tal Memorial 2008 – Round 2 – Gelfand, Boris – 1/2-1/2 – Ivanchuk, Vasyl – G8 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. Re1 d5 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. d4 cxd4
Tal Memorial Blitz 2008 – Round 21 – Gelfand, Boris – 1/2-1/2 – Ivanchuk, Vasyl – G176 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. Re1 d5 8. cxd5 Nxd5 9. d4 cxd4 10. Nxd5 Qxd5
World Blitz 2017 – Round 4.29 – Aronian, Levon – 1-0 – Georgiev, Krum – G194 1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 exd5 9. d4 O-O 10. Bf4 Na6
World Blitz 2019 – Round 16.3 – Giri, Anish – 1/2-1/2 – Yu, Yangyi – G1073 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 Nxd5 9. d4 cxd4 10. Qa4+ Nd7
World Rapid 2016 – Round 5.3 – Aronian, Levon – 1-0 – Ivanchuk, Vasyl – G189 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5 8. cxd5 Nxd5 9. d4 cxd4 10. Qa4+ Qd7
XXIV SuperGM 2007 – Round 12 – Topalov, Veselin – 1/2-1/2 – Carlsen, Magnus – G42 1. Nf3 Nf6 2. c4 b6 3. g3 c5 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. Re1 d5 8. d4 dxc4 9. dxc5 Bxc5 10. Qa4+ Nbd7

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