A36z — English: Symmetrical, Botvinnik System, 5…d6, 8.d3 a6

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 a6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur les cases fortes f4 et d5 et la paire de fous.

Côté adverse. Les fous enfermés en g7 et c8.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Bg5 (Clouer Nf6).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur les cases fortes b4, d4, g4 et e5, des avant-postes en d4 et e5 et la paire de fous.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bf5 (Développer Bc8) ; ...d5 (Rupture) ; ...e6 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3, d3→c4, d3→e4	● d6→c5, b7→a6, e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (3v0), ● d5 (3v1)	● b4 (2v0), ● d4 (2v1), ● g4 (2v0), ● e5 (2v0)
Cases faibles	—	—
Centre	● d5 (3v1), ● e4 (3v1)	● d4 (2v1), ● e5 (2v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 3)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d3-d4, ● e4-e5, ● f2-f3	● …d6-d5, ● …e7-e6, ● …e7-e5

Partie
1949 Leningrad – Round 1 – Shamaev, Leonid – 0-1 – Zagoriansky, Evgeny – G2 1. c4 Nf6 2. Nc3 c5 3. e4 Nc6 4. g3 g6 5. Bg2 Bg7 6. Nge2 O-O 7. O-O d6 8. d3 a6 9. h3 Bd7 10. Kh2 Rb8
1954 URS-chTJ Coop – Round ? – Taimanov, Mark E – 1-0 – Suetin, Alexey S – G15 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 a6 9. h3 Rb8 10. a4 Ne8
1956 Marianske Lazne/Praha – Round 1 – Pithart, Frantisek – 0-1 – Ujtelky, Maximilian – G2 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 O-O 6. Nge2 c5 7. d3 Nc6 8. O-O a6 9. a3 Rb8 10. f4 Bd7
1956 Marianske Lazne/Praha – Round 12 – Balanel, Ion – 0-1 – Beni, Alfred – G79 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 a6 9. h3 Ne8 10. Be3 f5
1956 Marianske Lazne/Praha – Round 18 – Rejfir, Josef – 1/2-1/2 – Ujtelky, Maximilian – G117 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 a6 9. a3 Rb8 10. Rb1 Nd7
1959 HUN Ch 15th – Round 6 – Haag, Ervin – 1/2-1/2 – Kluger, Gyula – G19 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d3 d6 6. e4 c5 7. Nge2 Nc6 8. O-O a6 9. h3 Ne8 10. Kh2 Nc7
1960 URS Ch sf – Round 13 – Peterson, Andrejs – 1/2-1/2 – Barenboim, Grigory – G99 1. c4 c5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. e4 O-O 6. Nge2 Nc6 7. O-O d6 8. d3 a6 9. h3 Bd7 10. f4 Rb8
1962 Vrnjacka Banja – Round 11 – Panov, Vladimir – 1/2-1/2 – Bradvarevic, Aleksandar – G101 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 c5 6. Nge2 Nc6 7. d3 O-O 8. O-O a6 9. h3 Bd7 10. f4 Rb8
1966 Havana – Round 1 – Gadia, Olicio – 0-1 – Alonso Iglesias, Marco Antonio – G6 1. c4 Nf6 2. d3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 d6 6. Ne2 c5 7. O-O Nc6 8. Nbc3 a6 9. f4 Rb8 10. Rb1 Bd7
1968 Lugano ol (Men) fin-D – Round 1 – Boutteville, Cesar – 0-1 – De Winter, Isidor – G1 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. d3 Nc6 8. O-O a6 9. h3 Bd7 10. Kh2 Nd4
41. Olympiad Open 2014 – Round 1.25 – Solak, Dragan – 1-0 – Alice, Mateus Felizardo Viageiro – G40 1. c4 Nf6 2. Nc3 c5 3. g3 g6 4. Bg2 Bg7 5. e4 Nc6 6. Nge2 d6 7. d3 a6 8. O-O O-O 9. h3 Rb8 10. a4 Ne8
FIDE World Blitz Championship 2014 – Round 17.5 – Grischuk, Alexander – 0-1 – Mamedov, Rauf – G162 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 a6 9. h3 Rb8 10. a4 e5
Memorial A.Alekhine (cat.18) 1992 – Round 2 – Salov, Valery – 1/2-1/2 – Shirov, Alexei – G2 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 d6 6. Nge2 c5 7. d3 Nc6 8. O-O a6 9. Rb1 Rb8 10. a3 b5
SportAccord Blitz Men 2013 – Round 24.8 – Dominguez Perez, Leinier – 1-0 – Radjabov, Teimour – G189 1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. Nge2 Nf6 7. d3 a6 8. O-O O-O 9. Rb1 Rb8 10. a4 Ne8
Tal Memorial Blitz 2016 – Round 1.2 – Aronian, Levon – 1-0 – Nepomniachtchi, Ian – G2 1. c4 Nf6 2. Nc3 c5 3. g3 g6 4. Bg2 Bg7 5. e4 O-O 6. Nge2 Nc6 7. O-O d6 8. d3 a6 9. h3 Rb8 10. a4 Nd7
Thessaloniki olm 1988 – Round 7 – Ribli, Zoltan – 1/2-1/2 – Gunawan, Ronny – G56 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 d6 5. e4 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 a6 9. h3 Rb8 10. a4 Ne8
World Blitz 2015 – Round 10.8 – Dominguez Perez, Leinier – 1-0 – Perunovic, Milos – G656 1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. Nge2 Nf6 7. d3 O-O 8. O-O a6 9. Rb1 Rb8 10. a4 Nd4
World Blitz 2015 – Round 19.7 – Dominguez Perez, Leinier – 1/2-1/2 – Anand, Viswanathan – G1219 1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 Nf6 6. Nge2 O-O 7. d3 d6 8. O-O a6 9. Rb1 Rb8 10. a4 Ne8
World Blitz 2018 – Round 1.55 – Piorun, Kacper – 1-0 – Iljiushenok, Ilia – G44 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 a6 9. h3 Rb8 10. a4 Nd7
World Rapid 2021 – Round 8.14 – Chigaev, Maksim – 1-0 – Mamedyarov, Shakhriyar – G448 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. e4 O-O 5. Nc3 c5 6. Nge2 Nc6 7. O-O d6 8. d3 a6 9. h3 Rb8 10. a4 Ne8

A36z — Symmetrical Botvinnik System

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 a6

Eval: [+0.02]

Les coups candidats

9.h3 — 61.5% (1531 parties)

Ambassadeurs : Bonoldi, Fabio (31x), Malinowski, Damian (12x), Weyerstrass, Ronald (8x), Koshy, Varugeese (7x), Alfaro de Hombre, José Manuel (5x), Seifert, Harald (5x), Tiefenbach, Wilfried (4x), Cvitan, Ognjen (4x)

9.Rb1 — 11.7% (292 parties)

Ambassadeurs : Webster, Andrew A (4x), Ivacic, Vladimir (3x), Nechaev, Oleg (3x), Weyerstrass, Ronald (2x), Sygulski, Artur (2x), Czerwonski, Aleksander (2x), Kistner, Klaus (2x), Rogers, Cathy (2x)

9.a3 — 8.4% (210 parties)

Ambassadeurs : Vo, Thanh Ninh (5x), Shvidler, Eliahu (3x), Petek, Pavel (3x), Krallis, Christos (3x), Ujtelky, Maximilian (2x), Ivacic, Vladimir (2x), Smirin, Ilia (2x), Mazi, Leon (2x)

9.f4 — 8.1% (201 parties)

Ambassadeurs : Mejzlik, Ondrej (4x), Krause, Jonah (3x), Karakatsanis, Nikolaos (2x), De Kruif, Kees (2x), Bowmer, Kevin (2x), Gadia, Okicio (1x), Roux Cabral, Fausto (1x), Gadia, Olicio (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.h3	9.Rb1	9.a3	9.f4
<1800	70	51%	10%	13%	14%
1800-2200	1098	61%	11%	9%	11%
2200-2600	1000	66%	12%	8%	4%
2600+	19	42%	47%	11%	—

Évolution par décennie (% des parties)

Décennie	N parties	9.h3	9.Rb1	9.a3	9.f4
1940s	1	100%	—	—	—
1950s	10	70%	10%	20%	—
1960s	17	53%	12%	6%	18%
1970s	22	45%	27%	14%	5%
1980s	73	62%	16%	8%	7%
1990s	335	55%	14%	13%	9%
2000s	502	53%	15%	6%	13%
2010s	1235	65%	10%	8%	7%
2020s	293	68%	8%	9%	6%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.h3	65%	68%	▲ +3.0%
9.Rb1	10%	8%	▼ -2.9%
9.a3	8%	9%	▲ +0.5%
9.f4	7%	6%	▼ -0.8%

Joueurs célèbres

Champions du monde dans cette position

Ju, Wenjun — 2 parties
Anand, Viswanathan — 1 partie

Parties historiques

9.h3 — 61.5% (1531 parties)

1949 — Shamaev, Leonid vs Zagoriansky, Evgeny — 0-1 — Leningrad RUS
1954 — Taimanov, Mark vs Suetin, Alexey S — 1-0 — Riga LAT
1955 — Nielsen, Axel vs Larsen, Benjamin Holsko — 1-0 — Oslo NOR
1956 — Balanel, Ion vs Beni, Alfred — 0-1 — Marianske Lazne
1956 — Lein, Anatoly vs Kirillov, Valentins — 0-1 — Tallinn EST

9.Rb1 — 11.7% (292 parties)

1959 — Keto, Hannu vs Nikolaevsky, Yuri V — 1/2-1/2 — Budapest HUN
1964 — Tsebenko Vsevolod N vs Bannik, Anatolij — 1/2-1/2 — ?
1968 — Novopashin, Arkady vs Tukmakov, Vladimir B — 0-1 — Kiev UKR
1975 — Weyerstrass, Ronald vs De Best Jos — 1-0 — Soest NED
1976 — Weyerstrass, Ronald vs Van Der Berg, Jay — 1/2-1/2 — SGS ch

9.a3 — 8.4% (210 parties)

1956 — Rejfir, Josef vs Ujtelky, Maximilian — 1/2-1/2 — Marianske Lazne
1956 — Pithart, Frantisek vs Ujtelky, Maximilian — 0-1 — Marianske Lazne
1964 — Nielsen, Axel vs Kelstrup, Hans — 1/2-1/2 — ?
1971 — Markland, Peter R vs Lee, Peter N — 1-0 — Blackpool ch-BCF
1972 — Coudari, Camille vs Scherbak, Michael — 1-0 — Montreal CAN

9.f4 — 8.1% (201 parties)

1963 — Wotulo, Max vs Baez Cobo, Antonio — 1/2-1/2 — Liberation Belgrade YUG
1966 — Gadia, Okicio vs Roux Cabral, Fausto — 0-1 — Havana CUB
1966 — Gadia, Olicio vs Alonso Iglesias, Marco Antonio — 0-1 — Havana CUB
1971 — Andersen, Borge vs Alivirta, Orri — 1-0 — Aarhus DEN
1980 — Eidinger, Helmut vs Mikavica, Mirko — 0-1 — Zurich SUI

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