A20a — English: King’s (1…e5)

1.c4 e5 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : paire de fous.
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 6 pièces non développées (B1, G1, C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, libère Bf1
● Nc3 — Développer Nb1
● Nf3 — Développer Ng1
● d3 — Libérer Bc1

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : paire de fous.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, 6 pièces non développées (B8, G8, C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Nc6 — Développer Nb8
● ...Nf6 — Développer Ng8
● ...Be7 — Développer Bf8

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

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

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 0)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	6 (b1, g1, c1, f1, a1, h1)	6 (b8, g8, 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	semi-ouvert
Ruptures	● c4-c5, ● d2-d3, ● e2-e3, ● f2-f3	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e5-e4, ● …f7-f6, ● …f7-f5

Partie
30. ECC Open 2014 – Round 3.9 – Townsend, M Paul – 0-1 – Popov, Ivan – G67 1. c4 e5 2. g3 h5 3. Nc3 h4 4. Bg2 Nc6 5. d3 d6 6. gxh4 Nge7 7. Nf3 Nf5 8. Bg5 Be7 9. Bxe7 Ncxe7 10. Qb3 c6
34. ECC Open 2018 – Round 6.9 – Edouard, Romain – 0-1 – Admiraal, Miguoel – G198 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 Nc6 5. Nf3 d6 6. Nc3 h6 7. a3 a6 8. b4 Ba7 9. Bb2 O-O 10. e3 Be6
43. Olympiad 2018 – Round 1.7 – Melkumyan, Hrant – 1-0 – Nanjo, Ryosuke – G67 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 O-O 5. e3 Nc6 6. Nge2 Re8 7. O-O a6 8. d4 exd4 9. exd4 Ba7 10. Be3 d5
43. Olympiad 2018 – Round 7.5 – Rodshtein, Maxim – 1-0 – Laznicka, Viktor – G478 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 O-O 5. e3 Re8 6. Nge2 Nc6 7. O-O e4 8. d3 exd3 9. Qxd3 d6 10. b3 Bg4
6. Norway Blitz 2018 – Round 5.1 – Carlsen, Magnus – 1/2-1/2 – Ding, Liren – G21 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. e3 O-O 6. Nge2 d5 7. cxd5 Nxd5 8. d4 exd4 9. Nxd5 cxd5 10. Nxd4 Nc6
82. Tata Steel GpA 2020 – Round 5.2 – Caruana, Fabiano – 1/2-1/2 – Van Foreest, Jorden – G28 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. Nf3 e4 6. Nh4 d5 7. cxd5 cxd5 8. d3 Ng4 9. O-O g5 10. dxe4 gxh4
Croatia GCT 2019 – Round 1.3 – So, Wesley – 1-0 – Ding, Liren – G3 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. e3 O-O 6. Nge2 d5 7. cxd5 Nxd5 8. d4 exd4 9. Nxd5 cxd5 10. exd4 Bb6
FIDE Candidates 2020 – Round 1.2 – Ding, Liren – 0-1 – Wang, Hao(ZJWZ) – G2 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 O-O 5. Nc3 c6 6. Nf3 d6 7. O-O Re8 8. Na4 Bb4 9. a3 Ba5 10. b4 Bc7
FIDE Candidates 2020 – Round 1.4 – Grischuk, Alexander – 1/2-1/2 – Alekseenko, Kirill – G4 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 d5 5. cxd5 Nxd5 6. Nc3 Nxc3 7. bxc3 O-O 8. Qc2 Nc6 9. Nf3 h6 10. O-O Rb8
FIDE Candidates 2022 – Round 7.3 – Ding, Liren – 1/2-1/2 – Firouzja, Alireza – G27 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 O-O 5. Nc3 c6 6. Nf3 d6 7. O-O a5 8. d4 exd4 9. Nxd4 a4 10. Rb1 Qa5
FIDE Grand Swiss 2025 1974 – Round 4 – Donchenko Alexander – 1/2-1/2 – Robson Ray – G215 1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. e3 Nf6 5. Nc3 g6 6. d3 exd3 7. Bxd3 Bg7 8. Be2 O-O 9. O-O Nxd4 10. Qxd4 Re8
FIDE World Cup 2019 – Round 2.4 – Gelfand, Boris – 1/2-1/2 – Matlakov, Maxim – G273 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 d5 5. cxd5 Nxd5 6. Nf3 Nc6 7. O-O O-O 8. a3 a5 9. Nxe5 Bxf2+ 10. Rxf2 Nxe5
FIDE World Cup 2019 – Round 5.2 – Ding, Liren – 1-0 – Grischuk, Alexander – G399 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 d5 5. cxd5 Nxd5 6. Nc3 Nb6 7. Nf3 Nc6 8. O-O O-O 9. a3 a5 10. Na4 Nxa4
FTX Crypto Cup 2022 – Round 6.5 – Carlsen, Magnus – 1-0 – Firouzja, Alireza – G94 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 O-O 5. Nf3 d6 6. Nc3 c6 7. O-O a5 8. d4 exd4 9. Nxd4 a4 10. e3 a3
GCT Blitz Paris 2016 – Round 10.4 – Topalov, Veselin – 1/2-1/2 – Aronian, Levon – G49 1. c4 e5 2. b3 Nf6 3. Bb2 Nc6 4. e3 g6 5. d3 Bg7 6. Nf3 d6 7. Be2 O-O 8. a3 Nd7 9. Nc3 a5 10. O-O Re8
Hoogovens Blitz 1999 – Round 11 – Bosboom, Manuel – 1-0 – Van Wely, Loek – G33 1. c4 e5 2. a3 Nf6 3. e3 c6 4. Nf3 e4 5. Nd4 d5 6. cxd5 cxd5 7. d3 a6 8. Nc3 Bd6 9. dxe4 dxe4 10. Be2 O-O
Interpolis 1984 – Round 1 – Miles, Anthony J – 1-0 – Sosonko, Gennadi – G2 1. c4 e5 2. Qc2 Nf6 3. e3 Nc6 4. a3 g6 5. b4 Bg7 6. Bb2 d6 7. Nc3 O-O 8. d3 a5 9. b5 Ne7 10. Nf3 Nd7
Lindores Abbey Tal Memorial 2021 – Round 2.4 – Rakhmanov, Aleksandr – 0-1 – Navara, David – G92 1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. e3 g6 5. Nxc6 dxc6 6. Nc3 Nf6 7. b3 Bg7 8. Bb2 Bf5 9. h3 h5 10. Qc2 Qd7
Niksic 1983 – Round 9 – Larsen, Benjamin Holsko – 1-0 – Seirawan, Yasser – G57 1. c4 e5 2. b3 g6 3. Bb2 Bg7 4. g3 c5 5. Bg2 Ne7 6. Nc3 Nbc6 7. d3 d6 8. e3 Be6 9. Nd5 Bxd5 10. cxd5 Nb4
Norway Supreme Masters Blitz 2013 – Round 1.1 – Nakamura, Hikaru – 1-0 – Hammer, Jon Ludvig – G1 1. c4 e5 2. a3 Nf6 3. e3 c6 4. Nf3 e4 5. Nd4 d5 6. cxd5 cxd5 7. d3 Nc6 8. Nxc6 bxc6 9. Qc2 Bd7 10. Nd2 exd3
Norway Supreme Masters Blitz 2013 – Round 8.2 – Nakamura, Hikaru – 1-0 – Wang, Hao(ZJWZ) – G37 1. c4 e5 2. a3 Nf6 3. e3 c6 4. Nf3 e4 5. Nd4 d5 6. cxd5 cxd5 7. d3 Bc5 8. Nc3 O-O 9. Be2 exd3 10. Qxd3 Nc6
Saint Louis Blitz 2022 – Round 1.1 – Nakamura, Hikaru – 1-0 – Caruana, Fabiano – G1 1. c4 e5 2. a3 Nc6 3. Nc3 f5 4. g3 Nf6 5. Bg2 a5 6. e3 d6 7. d4 Be7 8. Nge2 O-O 9. O-O Kh8 10. Rb1 Qe8
Saint Louis Blitz 2022 – Round 18.5 – Nakamura, Hikaru – 1-0 – Xiong, Jeffery – G90 1. c4 e5 2. a3 Nf6 3. d3 g6 4. Nf3 Nc6 5. b4 d5 6. cxd5 Nxd5 7. Bb2 Bg7 8. e3 Qe7 9. Nbd2 O-O 10. Rc1 Rd8
Saint Louis Blitz 2022 – Round 8.4 – Nakamura, Hikaru – 1/2-1/2 – Nepomniachtchi, Ian – G39 1. c4 e5 2. a3 c6 3. d4 exd4 4. Nf3 d5 5. Nxd4 Nf6 6. cxd5 Nxd5 7. e4 Nf6 8. f3 Bc5 9. Be3 O-O 10. Nc3 Re8
Saint Louis Rapid 2018 – Round 9.3 – Mamedyarov, Shakhriyar – 1-0 – Anand, Viswanathan – G43 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 O-O 5. e3 Re8 6. Nge2 d6 7. O-O c6 8. b3 Bb6 9. Ba3 Bf5 10. d4 e4
Saint Louis Rapid 2021 – Round 4.5 – Rapport, Richard – 1/2-1/2 – Svidler, Peter – G20 1. c4 e5 2. b3 Nf6 3. Bb2 Nc6 4. Nf3 e4 5. Nd4 Bc5 6. Nf5 O-O 7. e3 d5 8. cxd5 Nb4 9. Ng3 Nbxd5 10. Nc3 Re8
Saint Louis Rapid 2022 – Round 9.1 – Nakamura, Hikaru – 0-1 – Caruana, Fabiano – G41 1. c4 e5 2. a3 Nf6 3. d3 c6 4. Nf3 Bd6 5. Bg5 Bc7 6. Nc3 h6 7. Bh4 d6 8. e3 O-O 9. Be2 Bf5 10. d4 Nbd7
Smyslov Region Group Cup 2021 – Round 7.7 – Rakhmanov, Aleksandr – 1-0 – Esipenko, Andrey – G73 1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. e3 Nf6 5. Nc3 Bc5 6. Nde2 O-O 7. Ng3 Re8 8. a3 a5 9. Qc2 Qe7 10. Nd5 Qe5
Superbet Classic 2021 – Round 4.1 – So, Wesley – 1-0 – Caruana, Fabiano – G14 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 c6 5. Nf3 d6 6. O-O O-O 7. Nc3 a5 8. d4 exd4 9. Nxd4 a4 10. Rb1 Re8
Tal Memorial Blitz 2008 – Round 30 – Svidler, Peter – 1/2-1/2 – Gelfand, Boris – G246 1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. Nc2 Nf6 5. Nc3 Bc5 6. d4 exd3 7. exd3 d5 8. d4 Be7 9. c5 O-O 10. Bd3 b6
Tata Steel India Blitz 2019 – Round 10.4 – Nepomniachtchi, Ian – 1-0 – Anand, Viswanathan – G48 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. e4 d6 6. Nge2 Ng4 7. O-O h5 8. Na4 h4 9. Nxc5 hxg3 10. hxg3 dxc5
Tata Steel India Blitz 2019 – Round 15.4 – Giri, Anish – 1-0 – Anand, Viswanathan – G73 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 c6 5. Nf3 d6 6. Nc3 O-O 7. O-O a5 8. b3 Re8 9. e3 Bf5 10. h3 h6
Tata Steel India Blitz 2022 – Round 1.2 – Gukesh D – 0-1 – Mamedyarov, Shakhriyar – G2 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. d3 O-O 5. Nf3 Re8 6. O-O c6 7. Nc3 d6 8. b3 a5 9. Bb2 Bf5 10. e3 Nbd7
Tata Steel India Blitz 2022 – Round 18.1 – Nakamura, Hikaru – 1-0 – Praggnanandhaa R – G83 1. c4 e5 2. a3 Nf6 3. d3 c6 4. Nf3 Bd6 5. Bg5 h6 6. Bh4 Bc7 7. Nc3 d6 8. e3 Nbd7 9. d4 Qe7 10. Be2 Nf8
Tata Steel India Rapid 2019 – Round 3.4 – Nepomniachtchi, Ian – 1-0 – Anand, Viswanathan – G14 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. Nf3 e4 6. Nh4 d5 7. d4 Be7 8. cxd5 cxd5 9. O-O O-O 10. f3 exf3
World Blitz 2015 – Round 8.43 – Rakhmanov, Aleksandr – 0-1 – Seirawan, Yasser – G499 1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. Nxc6 dxc6 5. Nc3 Nf6 6. e3 Bf5 7. Qb3 b6 8. Qc2 Qd7 9. b3 Be7 10. h3 h5
World Blitz 2016 – Round 3.18 – Nakamura, Hikaru – 1-0 – Mareco, Sandro – G104 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 d6 5. e3 O-O 6. Nge2 a6 7. b3 Re8 8. Bb2 Nc6 9. d3 Ba7 10. Qd2 Bf5
World Blitz 2019 – Round 11.30 – Iturrizaga Bonelli, Eduardo – 1-0 – Rakhmanov, Aleksandr – G741 1. c4 e5 2. g3 h5 3. h4 Nc6 4. Bg2 d6 5. Nc3 g6 6. d3 Bg7 7. Nf3 Nge7 8. Rb1 Nd4 9. Nxd4 exd4 10. Ne4 Bf5
World Blitz 2019 – Round 17.44 – Nikolov, Nikolay Petrov – 1/2-1/2 – Gajewski, Gracjan – G1153 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. Nf3 e4 6. Nh4 d5 7. d3 exd3 8. cxd5 cxd5 9. Qxd3 d4 10. Ne4 Bb4+
World Blitz 2019 – Round 7.18 – Nikolov, Nikolay Petrov – 0-1 – Morozevich, Alexander – G463 1. c4 e5 2. g3 h5 3. Nf3 e4 4. Nh4 Be7 5. Nf5 d5 6. Nxe7 Qxe7 7. cxd5 h4 8. Nc3 Nf6 9. d3 e3 10. Bxe3 hxg3
World Blitz 2021 – Round 13.28 – Zvjaginsev, Vadim – 0-1 – Ter-Sahakyan, Samvel – G767 1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. e3 Nf6 5. Nc3 Bc5 6. Nb3 d6 7. Be2 O-O 8. O-O Bb6 9. f3 exf3 10. Bxf3 Ne5
World Blitz 2022 – Round 21.3 – Nakamura, Hikaru – 1/2-1/2 – Harikrishna, Pentala – G1114 1. c4 e5 2. a3 Nf6 3. d3 d5 4. cxd5 Nxd5 5. Nf3 Nc6 6. e4 Nb6 7. Be2 Be7 8. Be3 O-O 9. O-O Kh8 10. b4 a6
World Blitz 2022 – Round 6.2 – Nakamura, Hikaru – 1-0 – Caruana, Fabiano – G296 1. c4 e5 2. a3 c6 3. d4 e4 4. d5 f5 5. Nc3 d6 6. dxc6 bxc6 7. Bf4 Nf6 8. e3 Be7 9. h3 O-O 10. Nge2 a5
World Blitz 2023 – Round 4.14 – Niemann, Hans Moke – 1/2-1/2 – Rakhmanov, Aleksandr – G202 1. c4 e5 2. g3 h5 3. h3 h4 4. g4 c6 5. d4 exd4 6. Qxd4 d5 7. Nf3 dxc4 8. Qxc4 Be6 9. Qc2 Na6 10. a3 Nc5
World Blitz 2023 – Round 6.43 – Iturrizaga Bonelli, Eduardo – 1-0 – Aditya Mittal – G361 1. c4 Nf6 2. g3 e5 3. Bg2 Bc5 4. Nc3 c6 5. e3 d5 6. cxd5 cxd5 7. d4 exd4 8. exd4 Bb4 9. Ne2 h6 10. O-O O-O
World Rapid 2019 – Round 1.16 – Nikolov, Nikolay Petrov – 0-1 – Jakovenko, Dmitry – G9 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. Nf3 e4 6. Nh4 d5 7. d3 Ng4 8. O-O g5 9. d4 Be7 10. f3 Nxh2
World Rapid 2019 – Round 5.26 – Ganguly, Surya Shekhar – 1/2-1/2 – Jakovenko, Dmitry – G312 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. e3 Bb6 6. d4 exd4 7. exd4 d5 8. cxd5 Nxd5 9. Nxd5 cxd5 10. Ne2 Nc6
World Rapid 2019 – Round 6.28 – Iturrizaga Bonelli, Eduardo – 0-1 – Petrosian, Tigran L. – G383 1. c4 e5 2. g3 h5 3. h4 Nf6 4. Bg2 Bc5 5. Nc3 d6 6. d3 Ng4 7. e3 Nc6 8. a3 a5 9. Nf3 O-O 10. O-O Bf5
World Rapid 2019 – Round 8.11 – Nikolov, Nikolay Petrov – 1/2-1/2 – Rakhmanov, Aleksandr – G495 1. c4 e5 2. g3 h5 3. Nf3 Nc6 4. Nc3 d6 5. d4 exd4 6. Nxd4 h4 7. Bg2 Nxd4 8. Qxd4 c6 9. Bf4 Nf6 10. O-O-O Be6
World Rapid 2021 – Round 12.4 – Grischuk, Alexander – 0-1 – Caruana, Fabiano – G710 1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. e3 Nf6 5. Nc3 Ne5 6. f4 Nd3+ 7. Bxd3 exd3 8. O-O d5 9. cxd5 Nxd5 10. Nxd5 Qxd5

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