Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● a2→b3, f2→e3, f2→g3, h2→g3, b3→c4, e3→d4	● e6→f5, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● b5 (2v0)	● e4 (2v1), ● g4 (3v0)
Cases faibles	—	—
Centre	● d4 (3v0), ● e5 (2v1)	● e4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bb2	● Bb2 Mauvais (mob. 2)
Bg2	● Bg2 Ok (mob. 2)
Be7		● Be7 Ok (mob. 1)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	1 (● a1)	3 (● b8, ● c8, ● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● c4-c5, ● d4-d5, ● e3-e4	● …c7-c5, ● …d6-d5, ● …e6-e5, ● …f5-f4

A99n — Dutch: Ilyin-Zhenevsky, 8.b3 a5 9.Bb2 Qh5 10.e3

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.b3 a5 9.Bb2 Qh5 10.e3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Ne1 (36 % des parties) ; a3 (Préparer expansion aile dame — 23 % des parties) ; Qe2 (15 % des parties) ; Nd2 (6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Na6 (Développer b8 — 42 % des parties) ; ...c6 (Renforcer le centre — 17 % des parties) ; ...g5 (Attaque à l'aile roi — 12 % des parties) ; ...Nbd7 (Développer b8 — 11 % des parties) ; ...Qh6 (10 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1950 Bled – Round 2 – Najdorf, Miguel – 1-0 – Ivkov, Borislav – G17 1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. c4 d6 7. b3 Qe8 8. Nc3 a5 9. Bb2 Qh5 10. e3 c6
1952 Moscow Ch – Round 1 – Glotov, Vitaly – 1-0 – Antoshin, Vladimir S – G2 1. d4 f5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Be7 5. O-O O-O 6. c4 d6 7. Nc3 Qe8 8. b3 Qh5 9. e3 a5 10. Bb2 Na6
1968 CSR Ch – Round 5 – Kozma, Julius – 1-0 – Lechtynsky, Jiri – G39 1. d4 e6 2. Nf3 f5 3. g3 Be7 4. Bg2 Nf6 5. O-O O-O 6. c4 d6 7. Nc3 Qe8 8. b3 a5 9. Bb2 Qh5 10. e3 c6
1970 Vinkovci – Round ? – Tomic, Dalibor – 0-1 – Maric, Dragan – G24 1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nf3 Be7 5. O-O O-O 6. c4 d6 7. Nc3 a5 8. b3 Qe8 9. Bb2 Qh5 10. e3 c6
1970 Vinkovci – Round 8 – Gligoric, Svetozar – 1-0 – Maric, Rudolf – G22 1. d4 f5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Bb4+ 5. c3 Be7 6. O-O O-O 7. c4 d6 8. Nc3 a5 9. b3 Qe8 10. Bb2 Qh5

A99n — Ilyin-Zhenevsky (1950)

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.b3 a5 9.Bb2 Qh5 10.e3

Les coups candidats

10…Na6 — 41.7% (45 parties)

Ambassadeurs : Naumkin, Igor (5x), Pirrot, Dieter (3x), Timoscenko, Gennadij (2x), Poluljahov, Aleksandr (2x), Comas Fabrego, Lluis (2x), Langat Samuel (2x), Nedeljkovic, Srecko M (1x), Maric, Rudolf (1x)

10…c6 — 16.7% (18 parties)

Ambassadeurs : Rennert, Ralf (2x), Miguel, Nahuel (1x), Ivkov, Borislav (1x), Kozma, Julius (1x), Lechtynsky, Jiri (1x), Tomic, Dragoslav (1x), Maric, Rudolf (1x), Tomic, Dalibor (1x)

10…g5 — 12.0% (13 parties)

Ambassadeurs : Yepez, Olavo (1x), Weiss, Martin (1x), Andriessen, Bart Jan (1x), Appel, D. (1x), Hornstein, Norman M (1x), Kingston, Taylor (1x), Bak, Istvan (1x), Sax, Gyula (1x)

10…Nbd7 — 11.1% (12 parties)

Ambassadeurs : Nogovitsyn, Arkady I (1x), Kholmov, Ratmir D (1x), Cafferty, Bernard (1x), David Avril R (1x), Allegro, Valery (1x), Luce, Sebastien (1x), Martin, Andrew D (1x), Levi, Eddy L (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10…Na6	10…c6	10…g5	10…Nbd7
<1800	7	57%	—	—	14%
1800-2200	37	35%	22%	16%	14%
2200-2600	49	53%	8%	6%	8%

Évolution par décennie (% des parties)

Décennie	N parties	10…Na6	10…c6	10…g5	10…Nbd7
1950s	5	40%	20%	20%	20%
1960s	2	—	50%	—	—
1970s	9	11%	33%	11%	11%
1980s	8	25%	12%	25%	25%
1990s	29	59%	3%	14%	10%
2000s	33	42%	27%	9%	—
2010s	16	44%	12%	12%	19%
2020s	6	33%	—	—	33%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10…Na6	44%	33%	▼ -10.4%
10…c6	12%	0%	▼ -12.5%
10…g5	12%	0%	▼ -12.5%
10…Nbd7	19%	33%	▲ +14.6%

Parties historiques

10…Na6 — 41.7% (45 parties)

1952 — Glotov, Vladimir vs Abanin, Vladimir — 1-0 — Moscow RUS
1956 — Nedeljkovic, Srecko M vs Maric, Rudolf — 0-1 — ?
1979 — Jensen, Ib vs Brinck-Claussen, Bjorn — 1-0 — Denmark ch corr
1987 — Timoscenko, Gennadij vs Naumkin, Igor — 1-0 — Tashkent UZB
1988 — Caldwell, Brent vs Brooks McDonald — 1/2-1/2 — corr GB

10…c6 — 16.7% (18 parties)

1950 — Miguel, Nahuel vs Ivkov, Borislav — 1-0 — Bled SLO
1968 — Kozma, Julius vs Lechtynsky, Jiri — 1-0 — Luhacovice CZE
1970 — Tomic, Dragoslav vs Maric, Rudolf — 0-1 — Vinkovci CRO
1970 — Tomic, Dalibor vs Maric, Dragan — 0-1 — Vinkovci CRO
1975 — Doda, Zbigniew vs Pytel, Krzysztof — 1-0 — Augustow Tch-POL

10…g5 — 12.0% (13 parties)

1957 — Yepez, Olavo vs Weiss, Martin — 1-0 — Reykjavik ISL
1970 — Bak, Istvan vs Sax, Gyula — 1-0 — Budapest HUN
1983 — Andriessen, Bart Jan vs Appel, D. — 1-0 — Alkmaar open
1985 — Hornstein, Norman M vs Kingston, Taylor — 1/2-1/2 — ?
1990 — Zygouris, Hristos vs Langier, Daniel — 0-1 — Wch U16 Singapore SIN

10…Nbd7 — 11.1% (12 parties)

1955 — Nogovitsyn, Arkady I vs Kholmov, Ratmir D — 0-1 — Kiev UKR
1975 — Cafferty, Bernard vs David Avril R — 1/2-1/2 — ?
1982 — Allegro, Valery vs Luce, Sebastien — 0-1 — Copenhagen DEN
1985 — Martin, Andrew D vs Levi, Eddy L — 1/2-1/2 — Catford
1995 — Orsagova, Silvie vs Edzgveradze, Natalia — 1/2-1/2 — Lazne Bohdanec women

1950 Bled – Round 2 – Najdorf, Miguel – 1-0 – Ivkov, Borislav – G17

1952 Moscow Ch – Round 1 – Glotov, Vitaly – 1-0 – Antoshin, Vladimir S – G2

1968 CSR Ch – Round 5 – Kozma, Julius – 1-0 – Lechtynsky, Jiri – G39

1970 Vinkovci – Round ? – Tomic, Dalibor – 0-1 – Maric, Dragan – G24

1970 Vinkovci – Round 8 – Gligoric, Svetozar – 1-0 – Maric, Rudolf – G22