C47 — Four Knights Game

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6   ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bBFou enfermé — mobilité 0
bQ
bKRoi au centre — vulnérable
bBFou enfermé — mobilité 5
bR
bP
bP
bP
bP
bP
bP
bP
bN
bN
Case forte (2v0)
Case forte (2v1)
bPPion sous pression
wPPion central
wN
wN
wP
wP
wP
wP
wP
wP
wP
wR
wB
wQ
wK
wBFou actif — mobilité 5
wR
abcdefgh
Atouts. Les Blancs s'appuient sur les cases fortes b5 et d5 et la paire de fous.

Côté adverse. Les fous enfermés en c8 et f8 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les fous c1 et f1 et les tours a1 et h1).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; Bb5 (Clouer c6, Fou actif (mobilité 7), Développer f1,) ; d4 (Occuper le centre,) ; Bd3 (Développer Bf1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wBFou enfermé — mobilité 5
wKRoi au centre — doit roquer
wQ
wBFou enfermé — mobilité 0
wR
wP
wP
wP
wP
wP
wP
wP
wN
wN
wP
Case forte (2v1)
Case forte (2v0)
bP
bN
bN
bP
bP
bP
bP
bP
bP
bP
bR
bBFou actif — mobilité 5
bK
bQ
bB
bR
hgfedcba
Atouts. Les Noirs s'appuient sur les cases fortes b4 et d4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et f1 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les fous c8 et f8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...Bb4 (Fou actif en b4, clouage possible) ; ...Nd4 (Cavalier centralisé en d4,) ; ...d5 (Rupture).
Avantages
Faiblesses adverses
Diagonale active
Plans

Base Masters : Blancs 26.6%, Nulles 50.4%, Noirs 23.0%.
Coups candidats
4.Bb5  (40.7% — Blancs: 28.7% | Nulles: 49.3% | Noirs: 22.0%)
4.d4  (36.8% — Blancs: 20.6% | Nulles: 56.4% | Noirs: 22.9%)
4.g3  (11.1% — Blancs: 34.7% | Nulles: 41.7% | Noirs: 23.6%)
4.a3  (4.4% — Blancs: 34.0% | Nulles: 39.4% | Noirs: 26.6%)
4.h3  (2.4% — Blancs: 30.1% | Nulles: 47.7% | Noirs: 22.2%)
4.Be2  (2.0% — Blancs: 33.7% | Nulles: 41.5% | Noirs: 24.8%)
auto
Analyse coup par coup — 6 demi-coups commentés
1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3.
1…e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5.
2.Nf3 Contrôle c4, d4, d5, e5.
2…Nc6 Contrôle d4, f4, c5.
3.Nc3 Contrôle c4, d4, d5, e5.
3…Nf6 Contrôle d4, e4, f4, c5.
Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes ● b5 (2v0), ● d5 (2v1) ● b4 (2v0), ● d4 (2v1)
Cases faibles
Centre ● d5 (2v1) ● d4 (2v1)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 0)
Bf1 ● Bf1 Non développé (mob. 5)
Bc8 ● Bc8 Non développé (mob. 0)
Bf8 ● Bf8 Non développé (mob. 5)
Paire de fous ● Oui ● Oui
Non développées 4 (c1, f1, a1, h1) 4 (c8, f8, 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 fermé
Ruptures ● d2-d3 ● …d7-d6, ● …d7-d5
Partie
1933 Folkestone Olympiad 5th – Round 7.1 – Sultan Khan, Mir – 1/2-1/2 – Kashdan, Isaac – G59
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d3 d5 5. Bg5 Bb4 6. Nd2 dxe4 7. dxe4 Be6 8. Bb5 h6 9. Bxf6 Qxf6 10. Nd5 Bxd5
1952 Rosario – Round ? – Rebizzo, Cayetano – 1/2-1/2 – Garcia Vera, Oscar – G21
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d3 d6 5. Be2 g6 6. O-O Bg7 7. Bg5 h6 8. Bxf6 Bxf6 9. Nd5 Bg7 10. Qd2 Bg4
1967 West Vancouver CC – Round ? – Joel Roberts Buheeri – 0-1 – Berry, Jonathan – G12
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d3 Bb4 5. Bd2 d5 6. exd5 Nxd5 7. Nxd5 Bxd2+ 8. Qxd2 Qxd5 9. Be2 Bf5 10. O-O O-O-O
2024 SuperUnited Rapid & Blitz Croatia – Round 13 – Gukesh D – 0-1 – Vidit Santosh Gujrathi – G62
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 O-O 6. O-O d6 7. Ne2 Re8 8. c4 Bc5 9. b3 a6 10. Bb2 Bd7
2025 FIDE World Blitz Championship - Round 8 - Pantsulaia, Levan - 1/2-1/2 - Baadur Jobava - G390
1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 1/2-1/2
2026 Tata Steel Chess Masters - Round 3.5 - Aravindh, Chithambaram VR. - 1/2-1/2 - Abdusattorov, Nodirbek - G19
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Nd5 Bc5 5. Bc4 O-O 6. d3 Nxd5 7. Bxd5 d6 8. c3 a5 9. O-O Qe8 10. h3 Bb6
2026 Tata Steel Chess Masters - Round 6.2 - Erdogmus, Yagiz Kaan - 1-0 - Van Foreest, Jorden - G37
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 O-O 6. O-O Bxc3 7. dxc3 a5 8. Be3 d6 9. Nd2 Be6 10. f4 exf4
43. Olympiad 2018 – Round 10.32 – Kovalev, Vladislavadislav – 1-0 – Khusenkhojaev, Muhammad – G668
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 d5 5. exd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. O-O O-O 9. Re1 Re8 10. d3 Bd7
8. Norway Armageddon 2020 – Round 7.2 – Firouzja, Alireza – 1-0 – Aronian, Levon – G6
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Be7 5. Bb5 d6 6. d4 exd4 7. Nxd4 Bd7 8. Nde2 O-O 9. O-O a6 10. Bd3 b5
FIDE World Blitz Championship 2025 – Round 8 – Mahammad Muradli – 0-1 – Volodar Murzin – G157
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Nh5 7. Be5 Nf6 8. Bxf6 exf6 9. a3 Be6 10. e3 g6
FIDE World Cup 2025 – Round R1 Classical 1 – Neiksans Arturs – 1/2-1/2 – Suleymenov Alisher – G53
1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. Re1 c5 7. dxc5 dxc5 8. c3 Qb6 9. e4 Nc6 10. Na3 h6
FIDE World Cup 2025 – Round R1 Classical 2 – Yagiz Kaan Erdogmus – 1-0 – Abugenda Nagi – G76
1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Bg2 e6 5. O-O Nb4 6. Na3 h6 7. Ne5 Bd6 8. c3 Bxe5 9. dxe5 Nc6 10. c4 Nge7
FIDE World Rapid Championship 2025 – Round 5 – Shimanov Aleksandr – 1/2-1/2 – Andrey Esipenko – G96
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Nd5 Nxd5 6. exd5 e4 7. dxc6 exf3 8. Qxf3 dxc6 9. Bc4 O-O 10. O-O Qd7
Lindores Abbey Tal Memorial 2021 – Round 10.35 – Kovalev, Vladislav – 1-0 – Tregubov, Pavel V. – G451
1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. h3 a6 5. d4 exd4 6. Nxd4 Bb4 7. Nxc6 bxc6 8. Bd3 O-O 9. O-O d5 10. exd5 cxd5
Lindores Abbey Tal Memorial 2021 – Round 11.19 – Kravtsiv, Martyn – 1-0 – Kovalev, Vladislav – G477
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 Bb4 5. Bd3 O-O 6. O-O Re8 7. Re1 a6 8. Nd5 Bc5 9. c3 d6 10. Bc2 Ba7
Lindores Abbey Tal Memorial 2021 – Round 12.7 – Vachier-Lagrave, Maxime – 0-1 – Adhiban, B. – G547
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 d5 5. exd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d3 Bg4 9. h3 Bh5 10. g4 Bg6
Lindores Abbey Tal Memorial 2021 – Round 15.20 – Kravtsiv, Martyn – 1-0 – Kuzubov, Yuriy – G642
1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. a4 h6 5. Bb5 d6 6. d4 Bd7 7. O-O exd4 8. Nxd4 g6 9. Re1 Be7 10. Bxc6 Bxc6
Lindores Abbey Tal Memorial 2021 – Round 3.9 – Kravtsiv, Martyn – 0-1 – Pichot, Alan – G167
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 Bb4 5. Bd3 Bxc3 6. dxc3 d6 7. O-O h6 8. Re1 O-O 9. Nd2 Ne7 10. Nf1 Ng6
Saint Louis Rapid and Blitz 2025 – Round 1 – Grigoriy Oparin – 1-0 – Le Quang Liem – G4
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 O-O 6. O-O d6 7. Ne2 d5 8. exd5 Nxd5 9. c3 Be7 10. Bc2 f5
Saint Louis Rapid and Blitz 2025 – Round 15 – Caruana Fabiano – 1/2-1/2 – Gukesh D – G73
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 O-O 6. O-O Bxc3 7. dxc3 d6 8. a4 a5 9. Be3 Ne7 10. Nd2 Ng6
Saint Louis Rapid and Blitz 2025 – Round 27 – Grigoriy Oparin – 1/2-1/2 – Gukesh D – G133
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 O-O 6. O-O Bxc3 7. bxc3 Re8 8. Re1 d5 9. exd5 Qxd5 10. c4 Qd6
Sinquefield Cup 2025 – Round 9 – Aronian Levon – 1/2-1/2 – Praggnanandhaa R – G43
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Nd5 Nxd5 6. exd5 e4 7. dxc6 exf3 8. Qxf3 dxc6 9. Bc4 O-O 10. O-O Qg5
Superbet Blitz 2022 – Round 13.2 – Rapport, Richard – 0-1 – Duda, Jacob – G62
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 d5 5. Bb5 d4 6. Ne2 Bd6 7. d3 Bd7 8. Ng3 a6 9. Bc4 h6 10. O-O O-O
Superbet Blitz 2022 – Round 9.2 – Rapport, Richard – 0-1 – So, Wesley – G42
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 d5 5. Bb5 d4 6. Ne2 Bd6 7. d3 O-O 8. Bxc6 bxc6 9. h3 c5 10. b3 Ne8
Superbet Rapid 2022 – Round 9.4 – Rapport, Richard – 1-0 – Anand, Viswanathan – G44
1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. a4 d6 5. d4 exd4 6. Nxd4 Be7 7. Be2 O-O 8. O-O Re8 9. a5 Nb4 10. f4 c5
World Blitz 2017 – Round 2.15 – Short, Nigel D – 1-0 – Cheparinov, Ivan – G69
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 d5 5. exd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. O-O O-O 9. d4 exd4 10. cxd4 Bf5
World Blitz 2018 – Round 17.24 – Savchenko, Boris – 0-1 – Yu, Yangyi – G999
1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Rb1 a6 5. d4 exd4 6. Nxd4 Bb4 7. Nxc6 bxc6 8. Bd3 d5 9. exd5 Qe7+ 10. Qe2 cxd5
World Blitz 2018 – Round 18.33 – Kovalev, Vladislavadislav – 0-1 – Anton Guijarro, David – G1068
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 d6 6. O-O a6 7. Re1 Bc5 8. a3 g5 9. Nh2 g4 10. hxg4 h5
World Blitz 2018 – Round 18.57 – Moiseenko, Vadim – 1-0 – Yakubboev, Nodirbek – G1086
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Rb1 Bb4 5. Bd3 d6 6. O-O Bg4 7. h3 Bh5 8. Be2 O-O 9. d3 Re8 10. Bg5 h6
World Blitz 2018 – Round 20.48 – Kovalev, Vladislavadislav – 0-1 – Paravyan, David – G1192
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 O-O 6. O-O Re8 7. Re1 Bf8 8. a3 d6 9. Ne2 Nxe4 10. Bxe4 d5
World Blitz 2018 – Round 6.23 – Kovalev, Vladislavadislav – 1/2-1/2 – Vallejo Pons, Francisco – G346
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 d6 6. a3 Bc5 7. Na4 Bb6 8. b4 Ne7 9. c3 d5 10. Nxb6 axb6
World Blitz 2021 – Round 11.2 – Kravtsiv, Martyn – 1/2-1/2 – Aronian, Levon – G641
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 a6 5. d4 exd4 6. Nxd4 Nxe4 7. Nxc6 Nxc3 8. Nxd8 Nxd1 9. Nxf7 Kxf7 10. Kxd1 d5
World Blitz 2021 – Round 2.50 – Kravtsiv, Martyn – 1-0 – Nasuta, Grzegorz – G108
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 d5 5. exd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. O-O O-O 9. d4 exd4 10. cxd4 h6
World Blitz 2021 – Round 6.4 – Kravtsiv, Martyn – 1-0 – Puranik, Abhimanyu – G351
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a4 Bb4 5. Bd3 d6 6. O-O a6 7. Nd5 Bc5 8. c3 Nxd5 9. exd5 Ne7 10. Bc2 Bg4
World Blitz 2022 – Round 14.10 – Shimanov, Aleksandr – 1/2-1/2 – Matlakov, Maxim – G724
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Nd5 Nxd5 6. exd5 e4 7. dxc6 exf3 8. Qxf3 dxc6 9. Bc4 O-O 10. O-O Qg5
World Blitz 2022 – Round 18.10 – Shimanov, Aleksandr – 1-0 – Salem, A.R. Saleh – G937
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Nd5 Bc5 6. c3 O-O 7. d3 Re8 8. Bg5 Be7 9. Nxe7+ Qxe7 10. Be2 d6
World Blitz 2022 – Round 20.46 – Lintchevski, Daniil – 1/2-1/2 – Petrosyan, Manuel – G1078
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Nd5 Bc5 6. Bc4 d6 7. d3 h6 8. c3 O-O 9. b4 Bb6 10. a4 a5
World Blitz 2022 – Round 8.14 – Shimanov, Aleksandr – 0-1 – Andreikin, Dmitry – G397
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 g6 5. d4 exd4 6. Nxd4 Bg7 7. Nxc6 bxc6 8. Bd3 O-O 9. O-O d5 10. Re1 Rb8
World Blitz 2023 – Round 4.44 – Shevchenko, Kirill – 0-1 – Suyarov, Mukhammadzokhid – G238
1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Nd5 d6 5. d4 exd4 6. Nxd4 Be7 7. Bb5 Bd7 8. O-O O-O 9. Nxe7+ Qxe7 10. Bxc6 bxc6
World Rapid 2019 – Round 11.49 – Timofeev, Artyom – 0-1 – Salgado Lopez, Ivan – G728
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. h3 Bb4 5. Bd3 d6 6. a3 Bxc3 7. dxc3 h6 8. c4 a5 9. Be3 b6 10. Nd2 Nd7
C47a —
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6
Eval: [+0.12]
Les coups candidats
Ambassadeurs : Jovanovic, Bratislav M (113x), Janowski, Dawid (71x), Capablanca, Jose (64x), Maroczy, Geza (54x), Willemze, Thomas (54x), Spielmann, Rudolf (53x), Rubinstein, Akiba (52x), Nitin, S. (49x)
Ambassadeurs : Simmelink, Joop Theo (76x), Afek, Yochanan (48x), Lauer, Frederic (45x), Monson, Bruce (44x), Lukas, Norbert (43x), Bulgarini Torre, Marco (42x), Belenkaya, Dina (42x), Tuominen, Tanja (34x)
Ambassadeurs : ? (20x), Wall, Bill (17x), Hjorth, Jesper (16x), Van Bommel, Ton (14x), Krol, Wladyslaw (14x), Tartakower, Savielly (12x), Diehle, Julia (10x), Afonso, Sara Cerqueira (10x)
Ambassadeurs : Glek, Igor (161x), Hector, Jonny (38x), Sedina, Elena (34x), Lumsdon, Andrew (33x), Sudakova, Irina (31x), Vallejo Pons, Francisco (26x), Dubois, Martine (25x), Dempster, Dave (23x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Bb5 4.d4 4.Bc4 4.g3
<1800 3109 31% 31% 23% 3%
1800-2200 20125 35% 38% 11% 7%
2200-2600 22298 40% 37% 2% 12%
2600+ 1378 42% 39% 1% 8%
Évolution par décennie (% des parties)
Décennie N parties 4.Bb5 4.d4 4.Bc4 4.g3
1830s 1 100%
1840s 2 100%
1850s 10 30% 20% 50%
1860s 2 100%
1870s 68 81% 7% 10%
1880s 148 73% 14% 9%
1890s 163 72% 8% 9%
1900s 402 88% 2% 7%
1910s 488 87% 5% 6%
1920s 407 78% 16% 5% 0%
1930s 227 75% 19% 4%
1940s 310 67% 30% 3%
1950s 557 46% 49% 4%
1960s 732 40% 53% 5% 0%
1970s 718 39% 45% 11% 1%
1980s 1503 42% 38% 11% 3%
1990s 13423 35% 34% 18% 7%
2000s 23471 33% 31% 19% 9%
2010s 22301 37% 33% 13% 6%
2020s 8948 35% 38% 7% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Bb5 37% 35% ▼ -2.5%
4.d4 33% 38% ▲ +4.6%
4.Bc4 13% 7% ▼ -5.7%
4.g3 6% 4% ▼ -1.6%
Joueurs célèbres
Champions du monde dans cette position
Lasker, Emanuel — 10 parties
Alekhine, Alexander — 10 parties
Euwe, Max — 10 parties
Botvinnik, Mikhail — 10 parties
Smyslov, Vladimir — 10 parties
Tal, Mikhail — 10 parties
Anand, Viswanathan — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ding, Liren — 10 parties
Hou, Yifan — 10 parties
Ju, Wenjun — 10 parties
Steinitz, Wilhelm — 9 parties
Karpov, Anatoly — 7 parties
Gukesh D — 6 parties
Karpov, Aleksandr — 5 parties
Kasparov, Garry — 1 partie
Parties historiques
4.Bb5 — 36.8% (27225 parties)
1857 — Paulsen, Laurids vs Morphy, Paul — 0-1 — The Golden Treasury of Chess
1857 — Paulsen, Aleksander Karlsen vs Morphy — 0-1 — New York, NY USA
1857 — Paulsen, Louis vs Morphy, Paul — 0-1 — New York, NY USA
1870 — Winawer, Szymon vs Minckwitz, Johannes — 1-0 — Baden-Baden GER
1871 — Paulsen, Louis vs Goering, Carsta — 1-0 — Krefeld GER
4.d4 — 32.9% (24294 parties)
1857 — Paulsen, Louis vs Raphael, Benjamin — 1/2-1/2 — New York, NY USA
1857 — Paulsen, Louis vs Morphy, Paul — 0-1 — New York, NY USA
1870 — Rosenthal, Samuel vs Wisker, John — 1/2-1/2 — London ENG
1873 — Heral, Joseph vs Bird, Henry — 1/2-1/2 — Vienna AUT
1873 — Young, John W vs Ryall, Isaac — 0-1 — Toronto CAN
4.Bc4 — 14.3% (10598 parties)
1836 — Walker, George vs Saint Amant, Pierre C — 0-1 — ?
1842 — Walker, George vs Saint Amant, Pierre C — 0-1 — London London ENG
1842 — Staunton, Howard vs Cochrane, John Miles — 1/2-1/2 — London ENG
1851 — Buckle, Henry vs Loewenthal, Johann — 0-1 — London ENG
1853 — Harrwitz, Daniel vs Loewenthal, Johann — 1/2-1/2 — London ENG
4.g3 — 6.4% (4706 parties)
1923 — Nimzowitsch, Aron vs Gruenfeld, Ernst — 0-1 — Carlsbad CZE
1966 — Alonso Iglesias, Marco Antonio vs Roux Cabral, Luis — 1-0 — Havana CUB
1970 — Everaert, Eric vs Tonoli, Jose — 0-1 — Ghent
1972 — Boll, Peter vs Thijssen, Freek — 1-0 — Oss
1974 — Gulko, Boris vs Bykhovsky, Anatoly A — 1-0 — Moscow RUS

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