C42s — Russian Game: Classical, Mason Variation

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O O-O * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur la case forte e5, un fou actif en d3 et la paire de fous.

Côté adverse. Le fou enfermé en c8.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b1, le fou c1 et la tour a1).

Plans. Nbd2 (Développer Nb1) ; Be3 (Développer Bc1) ; h3 (Empêcher ...Bg4) ; Tour sur colonne e.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur un fou actif en e7 et la paire de fous.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b8, le fou c8 et la tour a8).

Plans. ...Nbd7 (Développer Nb8) ; ...Bg4 (Développer Bc8, clouer Nf3) ; ...f6 (Rupture) ; ...f5 (Rupture) ; Tour sur colonne e.

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v0)	—
Cases faibles	—	● g5
Centre	● d4 (1v0), ● e5 (2v0)	● d5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Ouvertes	● e	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bd3	● Bd3 Actif (mob. 5)
Be7		● Be7 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (b1, c1, a1)	3 (b8, c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c2-c3	● …f7-f6, ● …f7-f5

Partie
1902 It (Men) Hanover GER – Round 3 – Cohn, Wilhelm – 1-0 – Pillsbury, Harry – G10 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Be7 6. Bd3 d5 7. O-O O-O 8. Re1 Nf6 9. Bg5 Nc6 10. h3 h6
1902 It (Men) Vienna AUT – Round 1 – Kostic, Boris – 1/2-1/2 – John, Walter – G4 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nf6 9. h3 Re8 10. c3 Bd6
1902 It (Men) Vienna AUT – Round 11 – Morrison, John – 1/2-1/2 – John, Walter – G14 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nf6 9. h3 Re8 10. Bf4 Nbd7
1902 Monte Carlo – Round 11 – Eisenberg, Louis R – 1-0 – Pillsbury, Harry – G50 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nf6 9. Ne5 c5 10. dxc5 Bxc5
1903 Monte Carlo – Round 17 – Reggio, Arturo – 1/2-1/2 – Mason, James – G31 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 f5 9. Ne5 Nc6 10. f3 Nxe5
1905 Hauptturnier A – Round 15 – Vidmar Milan – 1-0 – Englund, Fritz – G50 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nf6 9. Nc3 Nc6 10. Re1 Bg4
1907 Ostende II – Round 17 – Leonhardt, Paul – 1-0 – Mortimer, James – G209 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 f5 9. c4 c6 10. Nc3 Kh8
1923 Scheveningen – Round 4 – Norman Hansen, Holger – 0-1 – Olland, Adolf George – G49 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 c6 9. Nc3 Nxc3 10. bxc3 Be6
1933 BCF Ch 26th – Round 9 – Thomas, George Alan – 1-0 – Jameson, Francis Noel – G25 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 c6 9. Nc3 Nxc3 10. bxc3 dxc4
1933 Folkestone Olympiad 5th – Round 4.2 – Thomas, George Alan – 1-0 – Page, George – G37 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 c6 9. Qc2 f5 10. Nc3 Be6
1940 Ch URS Moscow RUS – Round 16 – Lisitsin, Georgy – 1/2-1/2 – Lilienthal, Andor – G11 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nf6 9. Nbd2 c5 10. dxc5 Bxc5
1940 New York ch-USA – Round 1 – Kashdan, Isaac – 1-0 – Kupchik, Abraham – G3 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nf6 9. Nc3 Nc6 10. c5 Bg4
1946 Helsinki – Round 5 – Kiuru, V. – 1/2-1/2 – Fred, Aatos – G12 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nd6 9. Nc3 c6 10. Ne5 Bf5
1950 BCF Ch 37th – Round 9 – Fuller, John Arthur – 1/2-1/2 – Thomas Andrew – G46 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nf6 9. cxd5 Nxd5 10. Nc3 Nc6
1952 JUG Ch Belgrade YUG – Round 11 – Bogdanovic, Rajko – 1/2-1/2 – Krzisnik, Zvonko – G10 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nd6 9. Bf4 Bg4 10. Nbd2 Nd7
1953 Opatija – Round 7 – Unzicker, Wolfgang – 1/2-1/2 – Porreca, Giorgio – G54 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nd6 9. Bf4 Bg4 10. Nbd2 Nd7
1959 Boehlen U20 – Round 4 – Rautenstrauch, Hans Hubert – 1-0 – Hennings, Artur – G7 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 c6 9. Qc2 f5 10. Ne5 Na6
1960 Sao Paulo zt – Round 13 – German, Eugenio – 1-0 – Perez Alcocer, Jose – G71 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Be7 6. Bd3 d5 7. O-O O-O 8. Re1 Nf6 9. Nbd2 Nc6 10. c3 Bd6
1965 Harrachov U26 – Round 6 – Plachetka, Jan – 1/2-1/2 – Tichy, Vladimir – G18 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Be7 6. Bd3 d5 7. O-O O-O 8. c4 Nf6 9. Ne5 c5 10. dxc5 Bxc5
1968 IBM – Round 15 – Ree, Hans – 1/2-1/2 – Langeweg, Kick – G50 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nf6 9. Nc3 dxc4 10. Bxc4 Bg4
1968 OWL Ch – Round 9 – Groenegress, Wilfried – 1-0 – Adam, Detlef – G17 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nf6 9. Ne5 Be6 10. Bf4 Nbd7
2026 Tata Steel Chess Masters - Round 4.3 - Abdusattorov, Nodirbek - 1-0 - Nguyen, Thai Dai Van - G24 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nc6 9. c4 Nf6 10. c5 Bg4
43. Olympiad 2018 – Round 8.7 – Van Foreest, Jorden – 1/2-1/2 – Li, Chao – G551 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Bf5 9. c4 Nc6 10. cxd5 Qxd5
7. Norway Chess 2019 – Round 6.2 – Anand, Viswanathan – 1/2-1/2 – Yu, Yangyi – G26 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Bf5 9. Nbd2 Nd6 10. Bxf5 Nxf5
Bugojno 1978 – Round 14 – Timman, Jan H – 1/2-1/2 – Hort, Vlastimil – G80 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Nd6 9. Bf4 Bg4 10. h3 Bxf3
FIDE World Cup 2017 – Round 2.1 – Sevian, Samuel – 1/2-1/2 – Li, Chao – G214 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nf6 9. h3 Nc6 10. Nc3 Nb4
Turin ol (Men) 37th 2006 – Round 12 – Adams, Michael – 1-0 – Ghaem Maghami, Ehsan – G157 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nf6 9. Nc3 dxc4 10. Bxc4 Nc6
World Blitz 2018 – Round 8.24 – Tsydypov, Zhamsaran – 1/2-1/2 – Ponkratov, Pavel – G470 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nc6 9. Re1 Nf6 10. cxd5 Nxd5
World Blitz 2019 – Round 19.97 – Zarubitski, Viachaslau – 1/2-1/2 – Xu, Xiangyu – G1322 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Bf5 9. Bf4 Nc6 10. Nbd2 Nxd2

C42s — Russian Game: Classical Mason Variation

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O O-O

Eval: [+0.40]

Les coups candidats

8.c4 — 58.4% (1117 parties)

Ambassadeurs : Schubert, Steffen (12x), Johanson, Frans (11x), Abdulmanov, Eduard Nafikhovich (10x), Kulakiewicz, Mariusz (9x), Lacunza, Mario (9x), Weglarz, Leszek (8x), Plotkin, Victor (6x), Mason, James (5x)

8.Re1 — 34.8% (666 parties)

Ambassadeurs : Abdulmanov, Eduard Nafikhovich (7x), Stukalov, Mikhail Vasilievich (7x), Mason, James (6x), Kulakiewicz, Mariusz (5x), Lacunza, Mario (5x), Schubert, Steffen (4x), Tarrasch, Siegbert (3x), Schirmer, Michael (3x)

8.Nbd2 — 3.1% (59 parties)

Ambassadeurs : Carlson Maragia (2x), Li, Chao b (2x), Atunga Howard (1x), Kittson (1x), De Souza Mendes, Joao (1x), Prosdocimi, Arrigo (1x), Gibson Jr, William P (1x), Jensen, Arne-Roger (1x)

8.h3 — 1.4% (26 parties)

Ambassadeurs : MacKenzie, George H (1x), Medley, George (1x), Currie, Arthur Henry A (1x), Fotheringham, Alexander (1x), Bach Le Nguyen Khoi (1x), Penoyer, Flynn (1x), Marjanovic, Slavoljub (1x), Basoglu, Yilmaz (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.c4	8.Re1	8.Nbd2	8.h3
<1800	111	54%	38%	4%	1%
1800-2200	753	61%	34%	2%	1%
2200-2600	452	61%	34%	2%	1%
2600+	19	47%	32%	21%	—

Évolution par décennie (% des parties)

Décennie	N parties	8.c4	8.Re1	8.Nbd2	8.h3
1850s	1	—	—	—	—
1860s	8	75%	12%	—	12%
1870s	6	100%	—	—	—
1880s	12	92%	8%	—	—
1890s	10	20%	70%	—	10%
1900s	16	12%	81%	—	—
1910s	4	50%	50%	—	—
1920s	2	50%	—	50%	—
1930s	4	100%	—	—	—
1940s	3	33%	67%	—	—
1950s	10	60%	30%	10%	—
1960s	8	25%	75%	—	—
1970s	52	33%	54%	6%	6%
1980s	106	46%	46%	6%	1%
1990s	264	52%	39%	4%	1%
2000s	625	63%	31%	3%	2%
2010s	613	63%	31%	3%	1%
2020s	170	54%	42%	2%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.c4	63%	54%	▼ -8.5%
8.Re1	31%	42%	▲ +10.9%
8.Nbd2	3%	2%	-0.4%
8.h3	1%	1%	▼ -0.6%

Joueurs célèbres

Champions du monde dans cette position

Lasker, Emanuel — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

8.c4 — 58.4% (1117 parties)

1861 — Lichtenhein, Theodore vs Montgomery, Hardman Philips — 1-0 — Philadelphia, PA USA
1862 — Anderssen, Adolf vs Barnes, Thomas — 1-0 — London ENG
1865 — Knorre, VNeumann vs Bergell, RCordel, O — 1-0 — Berlin GER
1865 — Knorre Neumann vs Cordel Bergell — 1-0 — Berlin GER
1866 — MacKenzie, George H vs Barnett, James Parker — 1-0 — New York (New York CC)

8.Re1 — 34.8% (666 parties)

1860 — Medley, George vs Kolisch, Ignac — 1/2-1/2 — London ENG
1889 — Martinez, Dion M vs Mason, James — 1/2-1/2 — New York, NY USA
1890 — Tarrasch, Siegbert vs Mason, James — 1-0 — Manchester ENG
1890 — Tarrasch, Siegbert vs Mason, James — 1-0 — Manchester ENG
1892 — Alapin, Simon vs Mason, James — 0-1 — Dresden GER

8.Nbd2 — 3.1% (59 parties)

1924 — Atunga Howard vs Kittson — 1-0 — Hamilton
1958 — De Souza Mendes, Joao vs Prosdocimi, Arrigo — 1/2-1/2 — Rio de Janeiro BRA
1970 — Carlson Maragia vs Gibson Jr, William P — 0-1 — cr.
1970 — Carlson Maragia vs White, Russell — 1-0 — cr.
1978 — Lee, Courtney vs Jones, Brian — 0-1 — Buenos Aires ARG

8.h3 — 1.4% (26 parties)

1862 — MacKenzie, George H vs Medley, George — 1-0 — London ENG
1898 — Currie, Arthur Henry A vs Fotheringham, Alexander — 1-0 — British CC
1972 — Bach Le Nguyen Khoi vs Penoyer, Flynn — 1-0 — ?
1978 — Marjanovic, Slavoljub vs Basoglu, Yilmaz — 1-0 — Baile Herculane
1978 — Whitehead, Jay E vs Lawless, Kerry — 1/2-1/2 — San Francisco, CA USA

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