A25d — English: Closed, Hort Variation

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte b5, case forte d5, Bg2 actif, paire de fous.
Faiblesses adverses : arriéré f7, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, arriérés d2, f2, 3 pièces non développées (C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● d3 — Libérer Bc1

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte e5, case forte f5, Be6 actif, paire de fous.
Faiblesses adverses : arriérés d2, f2, Bc1 enfermé, roi blanc au centre, pawn c4 en prise.
Problèmes : roi au centre, arriéré f7, 3 pièces non développées (G8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Nf6 — Développer Ng8
● ...d5 — Rupture
● ...e4 — Rupture
● ...f5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A25d — Closed Hort Variation

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6

Eval: [+0.58]

Les coups candidats

7.d3 — 31.3% (278 parties) →

Ambassadeurs : Bobotsov, Milko G (2x), Leitner, Maximilian (2x), Jankovec, Ivan (2x), Hort, Vlastimil (2x), Hanken, Jerome B (2x), Hawkes, Rob (2x), Haapasalo, Jukka-Pekka (2x), Gerland, Svenja (2x)

7.Nd5 — 22.8% (202 parties)

Ambassadeurs : Ozols, Karlis (2x), Mikenas, Vladas (2x), Antunac, Goran (2x), Cox, John J (2x), Szaday, Laszlone (2x), Solak, Dragan (2x), Pikkmets, Reet (2x), Yilmazyerli, Mert (2x)

7.d4 — 22.8% (202 parties)

Ambassadeurs : Cekro, Ekrem (5x), Emma, Jaime (3x), Tonoli, Jose (3x), Suttles, Duncan (3x), Bukal, Vladimir Jr. (3x), Krasenkow, Michal (3x), Elliston, Robert V (2x), Martinovsky, Eugene (2x)

7.b3 — 20.4% (181 parties)

Ambassadeurs : Engeler Arvid (2x), Hoffmann, Hans (2x), Wolfsteiner, Helmut (2x), Lehtosaari, Kalevi (2x), Brokko, Margit (2x), Soni, Sharan (2x), Raicevic, Momcilo (2x), Mackowiak, Marek (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.d3	7.Nd5	7.d4	7.b3
<1800	7	29%	29%	—	43%
1800-2200	331	37%	23%	10%	28%
2200-2600	356	26%	24%	36%	12%
2600+	7	43%	43%	—	14%

Évolution par décennie (% des parties)

Décennie	N parties	7.d3	7.Nd5	7.d4	7.b3
1930s	3	—	67%	33%	—
1940s	1	—	100%	—	—
1950s	10	—	30%	20%	20%
1960s	22	36%	27%	14%	23%
1970s	52	27%	15%	44%	10%
1980s	82	28%	27%	34%	7%
1990s	214	32%	19%	27%	20%
2000s	270	34%	20%	21%	21%
2010s	193	32%	27%	13%	26%
2020s	40	22%	35%	10%	32%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.d3	32%	22%	▼ -9.6%
7.Nd5	27%	35%	▲ +8.1%
7.d4	13%	10%	▼ -3.0%
7.b3	26%	32%	▲ +6.1%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 1 partie
Tal, Mikhail — 1 partie

Parties historiques

7.d3 — 31.3% (278 parties)

1961 — Novotelnov, Nikolai vs Lazarev, Efim M. — 1-0 — Moscow RUS
1963 — Plater, Kazimierz vs Padevsky, Nikola — 1/2-1/2 — Polanica Zdroj POL
1964 — Bobotsov, Milko G vs Ciocaltea, Victor — 1-0 — Tel Aviv ISR
1965 — Bobotsov, Milko G vs Zinn, Lothar — 1/2-1/2 — Leipzig Inter-1
1965 — Book, Eero vs Westerinen, Heikki M.J. — 0-1 — Ch Finland Helsinki FIN

7.Nd5 — 22.8% (202 parties)

1937 — Ozols, Karlis vs Mikenas, Vladas — 0-1 — Kemeri LAT
1937 — Ozols, Karlis vs Mikenas, Vladas — 0-1 — Kemeri LAT
1945 — Vidmar, Milan Jr vs Puc, Stojan — 1/2-1/2 — Novi Sad SRB
1951 — Heinicke, Herbert vs Niephaus, Walter — 1/2-1/2 — Augsburg GER
1956 — Chukaev, Egor vs Kasparian, Genrikh — 1-0 — Tbilisi GEO

7.d4 — 22.8% (202 parties)

1937 — Botvinnik, Mikhail vs Levenfish, Grigory — 1-0 — Leningrad RUS
1959 — Pachman, Ludek vs Emma, Jaime — 0-1 — Mar del Plata ARG
1959 — Letelier Martner, Rene vs Emma, Jaime — 1-0 — Mar del Plata ARG
1961 — Salov, Sergej vs Gaister A — 1/2-1/2 — ?
1963 — Saidy, Anthony vs Addison, Wiliam G — 1-0 — New York ch-USA

7.b3 — 20.4% (181 parties)

1956 — Mukhin, Evgeny B vs Kasparian, Genrikh — 1-0 — Moscow RUS
1959 — Thibaut, Georges vs O'Kelly de Galway, Alberic — 1-0 — Blankenberge
1965 — Piskov, Kamen Penev vs Arnaudov, Petar — 0-1 — Varna BUL
1966 — Malcanek, Oldrich vs Buljovcic, Ivan — 0-1 — Reggio Emilia ITA
1967 — Panzner, K. vs Martinovsky, Eugene — 0-1 — Illinois Open

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● d2, ● f2	● f7
Chaînes	● d2→e3, f2→e3, f2→g3, h2→g3	● d6→e5, c7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v0), ● b5 (2v0), ● d5 (3v1)	● e5 (3v0), ● f5 (2v0)
Cases faibles	—	—
Centre	● d5 (3v1), ● e4 (2v0)	● e5 (3v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 6)
Be6		● Be6 Actif (mob. 7)
Bg7		● Bg7 Ok (mob. 3)
Paire de fous	● Oui	● Oui
Non développées	3 (c1, a1, h1)	3 (g8, a8, h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c4-c5, ● d2-d3, ● e3-e4, ● f2-f3	● …d6-d5, ● …e5-e4, ● …f7-f6, ● …f7-f5

Partie
1937 Kemeri – Round 1 – Ozols, Karlis – 0-1 – Mikenas, Vladas – G4 1. c4 Nc6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Nd5 Qd7 8. O-O Nd8 9. e4 c6 10. Ne3 Ne7
1937 Kemeri LAT – Round 11 – Ozols, Karlis – 0-1 – Mikenas, Vladas – G5 1. c4 Nc6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Nd5 Qd7 8. O-O Nd8 9. e4 c6 10. Ne3 Ne7
1945 Novi Sad – Round 16 – Vidmar, Milan Jr – 1/2-1/2 – Puc, Stojan – G155 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Nd5 Nce7 8. d4 c6 9. Nxe7 Nxe7 10. d5 Bd7
1951 Augsburg – Round 11 – Heinicke, Herbert – 1/2-1/2 – Niephaus, Walter – G41 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Nd5 Qd7 8. Qa4 Nh6 9. d3 f5 10. f4 O-O
1956 URS Ch sf – Round ? – Livshin, Iosif – 1-0 – Chistiakov, Alexander – G2 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Qa4 Bd7 8. O-O Nge7 9. b4 a6 10. Qb3 Qc8
1956 URS Ch, semi final – Round 11 – Chukaev, Egor – 1-0 – Kasparian, Genrikh – G86 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Nd5 Qc8 8. Nec3 Nf6 9. Nb5 Bxd5 10. cxd5 Ne7
1959 Mar del Plata – Round 1 – Letelier Martner, Rene – 1-0 – Emma, Jaime – G7 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 exd4 8. Nxd4 Bd7 9. O-O Nge7 10. Nde2 O-O
1959 Mar del Plata – Round 1 – Pachman, Ludek – 0-1 – Emma, Jaime – G2 1. c4 Nc6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 exd4 8. exd4 Bxc4 9. d5 Ne5 10. O-O Ne7
1960 Varna Varna BUL – Round 8 – Bobotsov, Milko G – 1-0 – Milev, Zdravko – G29 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Nd5 Nh6 8. Nec3 a6 9. d3 f5 10. O-O O-O
1963 New York ch-USA – Round 9 – Saidy, Anthony – 1-0 – Addison, Wiliam G – G35 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 exd4 8. Nxd4 Nge7 9. Nxe6 fxe6 10. O-O O-O
1963 Rubinstein Memorial – Round 4 – Plater, Kazimierz – 1/2-1/2 – Padevsky, Nikola – G29 1. g3 e5 2. c4 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. e3 d6 6. Nge2 Be6 7. d3 Qd7 8. Nd5 Nd8 9. e4 c6 10. Ne3 Bh3
1964 Tel Aviv olm fin-A – Round 9 – Bobotsov, Milko G – 1-0 – Ciocaltea, Victor – G186 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d3 Qd7 8. h3 Nge7 9. Nd5 O-O 10. Qa4 Kh8
1965 Leipzig Inter-1 – Round 5 – Bobotsov, Milko G – 1/2-1/2 – Zinn, Lothar – G18 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d3 Qd7 8. h4 h5 9. Ne4 Bh6 10. N2c3 f5
1966 Reggio Emilia ITA – Round 7 – Malcanek, Oldrich – 0-1 – Buljovcic, Ivan – G9 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. b3 Qd7 8. h3 Nge7 9. Ne4 h6 10. d4 exd4
1968 Alma Ata ch-URS – Round 3 – Tal, Mikhail – 1-0 – Cseshkovsky, Vitaly – G42 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. Nd5 Qd7 8. Qa4 Nf6 9. O-O O-O 10. Nec3 Ne8
1969 Debrecen – Round 1 – Forintos, Gyozo V – 1-0 – Kovacs, Laszlo M – G1 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 Bxc4 8. d5 Nce7 9. Qa4+ b5 10. Nxb5 Bxb5
1969 FRG Ch Koenigsfeld GER – Round 8 – Heinicke, Herbert – 1-0 – Oechslein, Rainer – G20 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d3 Qd7 8. Nd5 Nd8 9. h4 c6 10. Ndc3 h5
1969 YUG Ch 24th – Round 16 – Marangunic, Srdjan – 1/2-1/2 – Nicevski, Risto – G62 1. g3 g6 2. Bg2 Bg7 3. c4 e5 4. Nc3 Nc6 5. e3 d6 6. Nge2 Be6 7. d3 Qd7 8. Nd5 Nd8 9. e4 c6 10. Ne3 Ne7
1970 Palma de Mallorca Interzonal – Round 8 – Larsen, Bent – 1/2-1/2 – Suttles, Duncan – G251 1. g3 g6 2. Bg2 Bg7 3. c4 Nc6 4. Nc3 d6 5. e3 e5 6. Nge2 Be6 7. d4 Bxc4 8. d5 Bxe2 9. Qxe2 Nb8 10. Qb5+ Nd7
1970 Vinkovci – Round 6 – Quinteros, Miguel Angel – 1-0 – Hort, Vlastimil – G6 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 d6 5. e3 Bg7 6. Nge2 Be6 7. d4 exd4 8. Nxd4 Nxd4 9. exd4 Qd7 10. O-O Ne7
1972 Skopje ol (Men) fin-A – Round 4 – Gereben, Erno – 1-0 – Emma, Jaime – G19 1. c4 Nc6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. b3 Qd7 8. Nd5 Nce7 9. Ba3 Nxd5 10. cxd5 Bh3
1972 Skopje ol (Men) fin-A – Round 8 – Benko, Pal – 1-0 – Emma, Jaime – G11 1. c4 Nc6 2. g3 e5 3. Bg2 g6 4. Nc3 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 exd4 8. Nxd4 Nxd4 9. exd4 Ne7 10. d5 Bd7
Niksic 1983 – Round 13 – Larsen, Bent – 1/2-1/2 – Ljubojevic, Ljubomir – G81 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d3 Qd7 8. h4 h6 9. Rb1 Rb8 10. b4 Nce7

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