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Home Chess Encyclopedia Chess Openings Chess Openings By ECO Codes C21-C30

Chess Openings By ECO Codes C21-C30

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C21 Center Game; C21 1.e4 e5 2.d4   
C21 Beyer Gambit 1.e4 e5 2.d4 d5 
C21 Philidor Gambit 1.e4 e5 2.d4 d6 3.dxe5 Bd7 
C21 Center Game Accepted 1.e4 e5 2.d4 exd4 
C21 Von der Lasa Gambit 1.e4 e5 2.d4 exd4 3.Bc4 
C21 Ross Gambit, Center 1.e4 e5 2.d4 exd4 3.Bd3 
C21 Danish Gambit 1.e4 e5 2.d4 exd4 3.c3 
C21 Sorensen Defense, Center 1.e4 e5 2.d4 exd4 3.c3 d5 
C21 Danish Gambit Accepted 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 
C21 Copenhagen Defense, Danish Gambit 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 Bb4+ 
C21 Schlechter Defense, Center 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 d5 
C21 Classical Defense, Danish Gambit 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 Nf6 
C21 Chigorin Defense, Danish Gambit 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 Qe7 
C21 Svenonius Defense, Center 1.e4 e5 2.d4 exd4 3.c3 Ne7 
C21 Halasz-McDonnell Gambit 1.e4 e5 2.d4 exd4 3.f4 
C21 Crocodile Variation, Center Game 1.e4 e5 2.d4 exd4 3.f4 Bc5 4.Nf3 Nc6 5.c3 
C21 Lanc-Arnold Gambit, Center 1.e4 e5 2.d4 exd4 3.Nf3 Bc5 4.c3 
C21 Scippler Gambit, Center 1.e4 e5 2.d4 exd4 3.Nf3 Bc5 4.c3 dxc3 5.Bc4 
C22 C22 1.e4 e5 2.d4 exd4 3.Qxd4 
C22 Hall Variation, Center 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qc4 
C22 Paulsen Attack Variation, Center 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3   
C22 Berger Variation, Center 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6   
C22 Kupreichik Variation, Center 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 5.Nc3 Bb4 6.Bd2 O-O 7.O-O-O Re8 8.Bc4 
C23 Bishop's Opening; C23 1.e4 e5 2.Bc4 
C23 Anderssen Gambit 1.e4 e5 2.Bc4 b5 3.Bxb5 c6 
C23 Thorold Gambit 1.e4 e5 2.Bc4 b5 3.Bxb5 f5 
C23 Classical Variation, Bishop; Boi Variation 1.e4 e5 2.Bc4 Bc5   
C23 MacDonnell Gambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.b4 
C23 Labourdonnais-Denker Gambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.c3 
C23 McDonnell Double Gambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.f4 
C23 Philidor Variation, Bishop 1.e4 e5 2.Bc4 Bc5 3.c3 
C23 Lewis Counter-Gambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.c3 d5 
C23 Lewis Countergambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.c3 d5 4.Bxd5 Nf6 
C23 Walker Variation, Bishop 1.e4 e5 2.Bc4 Bc5 3.c3 d5 4.Bxd5 Nf6 5.d4 
C23 Lewis Gambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.d4 
C23 Stein Gambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.f4 
C23 Lopez Variation, Bishop 1.e4 e5 2.Bc4 Bc5 3.Qe2 
C23 Lopez Gambit, Bishop 1.e4 e5 2.Bc4 Bc5 3.Qe2 Nf6 4.f4 
C23 Khan Gambit, Bishop 1.e4 e5 2.Bc4 d5 
C23 King's Gambit Reversed, Bishop 1.e4 e5 2.Bc4 f5 
C23 Calabrese Counter-Gambit 1.e4 e5 2.Bc4 f5 
C23 Kreijcik Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.f3 Bc5 4.Ne2 Nc6 5.b4 
C23 Greco Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.f4 
C23 Horwitz Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.Nc3 b5 
C23 Blanel Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.Nc3 Nxe4 
C23 Paschmann Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.Ne2 Nxe4 4.Nec3 
C23 Meitner-Mieses Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.Bc4 Bc5 4.Qg4 Qf6 5.Nd5 
C23 Bronstein Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6 4.f4 Nxe4 5.Nf3 
C24 Berlin Defense, Bishop; C24 1.e4 e5 2.Bc4 Nf6   
C24 Spielmann Attack, Bishop 1.e4 e5 2.Bc4 Nf6 3.d3 Bc5 4.Nc3 
C24 Kitchner Folly, Bishop 1.e4 e5 2.Bc4 Nf6 3.d3 Be7 4.Nf3 O-O 
C24 Vienna Hybrid, Bishop 1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nc3 
C24 Hromadka Variation, Bishop 1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nc3 Bb4 5.Ne2 
C24 Ponziani Center Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.d4  
C24 Warsaw Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.c3 
C24 Urusov; Ouroussoff; Keidansky G 1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 
C24 Keidansky Gambit, Bishop 1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 Nxe4 5.Qxd4 
C25 Vienna; Hamppe Opening; C25 1.e4 e5 2.Nc3   
C25 Zhuravlev Counter-Gambit, Vienna 1.e4 e5 2.Nc3 Bb4 3.Qg4 
C25 Zhuraviev Countergambit, Vienna 1.e4 e5 2.Nc3 Bb4 3.Qg4 Nf6 
C25 Anderssen Defense, Vienna 1.e4 e5 2.Nc3 Bc5 
C25 Hamppe-Mietner Variation, Vienna 1.e4 e5 2.Nc3 Bc5 3.Na4 
C25 Giraffe Attack, Vienna 1.e4 e5 2.Nc3 Bc5 3.Qg4 
C25 Omaha Gambit, Vienna 1.e4 e5 2.Nc3 d6 3.f4 
C25 Fyfe Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.d4 
C25 Philidor Countergambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.d4 f5 
C25 Alapin Variation, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 
C25 Vienna Gambit 1.e4 e5 2.Nc3 Nc6 3.f4 
C25 Quelle Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 Bc5 4.fxe5 d6 
C25 Steinitz Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 
C25 Fraser-Minckwitz Variation, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 b6 
C25 Zukertort Defense, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 d5 
C25 Paulsen Defense, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 d6 
C25 Soerensen Defense, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 g5 
C25 Knight Variation, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 
C25 Cunningham Defense, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 Be7 
C25 Hamppe-Muzio Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O 
C25 Pierce Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.d4 
C25 Hamppe-Allgaier Gambit, Vienna 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.h4 g4 6.Ng5 
C25 Hamppe-Allgaier-Thorold Gambit 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.h4 g4 6.Ng5 h6 7.Nxf7 Kxf7 8.d4 
C25 Paulsen Variation, Vienna 1.e4 e5 2.Nc3 Nc6 3.g3 
C25 Mariotti Gambit 1.e4 e5 2.Nc3 Nc6 3.g3 Bc5 4.Bg2 h5 5.Nf3 h4 
C25 Polluck Gambit, Vienna 1.e4 e5 2.Nc3 Nf6 3.g3 Bc5 4.Bg2 Nc6 5.Nge2 d5 6.exd5 
C25 Erben Gambit, Vienna 1.e4 e5 2.Nc3 Nf6 3.g3 d5 4.exd5 c6 
C25 Hamppe Meitner, Vienna 1.e4 e5 2.Nf3 Bc5 3.Na4 
C26 Falkbeer Variation, Vienna; C26 1.e4 e5 2.Nc3 Nf6 
C26 Mengarini Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.a3 
C26 Oxford Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3 
C26 Mieses Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.g3 
C27 Stanley Variation, Vienna; C27 1.e4 e5 2.Nc3 Nf6 3.Bc4 
C27 Reversed Spanish, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Bb4 
C27 Bishop Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Bc5 
C27 Eifel Gambit, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Bc5 4.Nge2 b5 
C27 Modern Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 
C27 Boden-Kieseritzky Gambit, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Nf3 
C27 Monster Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7 
C27 Alekhine Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7 6.Nf3 Nc6 7.Nxe5 
C27 Adams Gambit, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.d4 
C27 Frankenstein-Dracula Var, Vienna 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.Nb5 g6 7.Qf3 f5 8.Qd5 Qe7 
C28 Three Knights Variation, Vienna; C28 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6 
C29 Vienna Gambit, Vienna; C29 1.e4 e5 2.Nc3 Nf6 3.f4 
C29 Steinitz Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.d3 
C29 Wurzburger Trap, Vienna 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3 Qh4 6.g3 Nxg3 7.Nf3 Qh5 8.Nd5 Bxd5 9.Nf4 
C29 Breyer Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Be7 
C29 Kaufmann Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Bg4 6.Qe2 
C29 Paulsen Attack, Vienna 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 
C29 Bardeleben Variation, Vienna 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 f5 
C30 King's Gambit; C30 1.e4 e5 2.f4 
C30 Classical Defense, KGD 1.e4 e5 2.f4 Bc5   
C30 Heath Variation, KGD; Rotlewi Countergambit 1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.b4 
C30 Marshall (Euwe) Attack, KGD 1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 Bg4 5.fxe5 dxe5 6.Qa4+ 
C30 Rubinstein Countergambit, KGD 1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 f5 
C30 Svenonius Variation, KGD 1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.Nc3 Nf6 5.Bc4 Nc6 6.d3 Bg4 
C30 Senechaud Counter-Gambit, KGD 1.e4 e5 2.f4 Bc5 3.Nf3 g5 
C30 Mafia Defense, KGD 1.e4 e5 2.f4 c5 
C30 Panteldakis Countergambit, KGD 1.e4 e5 2.f4 f5 
C30 Soller-Zilbermints Gambit, KGD 1.e4 e5 2.f4 f6 3.fxe5 Nc6 
C30 Zilbermints Double Countergambit; KGD 1.e4 e5 2.f4 g5 
C30 Queen's Knight Defense, KGD 1.e4 e5 2.f4 Nc6 
C30 Miles Defense, KGD 1.e4 e5 2.f4 Nc6 3.Nf3 f5 
C30 Zilbermints Double Gambit I, KGD 1.e4 e5 2.f4 Nc6 3.Nf3 g5 
C30 Petrov's Defense, KGD 1.e4 e5 2.f4 Nf6 
C30 Norwalde (Norwalder) Variation, KGD 1.e4 e5 2.f4 Qf6 
C30 Schubert Variation, KGD 1.e4 e5 2.f4 Qf6 3.Nc3 Qxf4 4.d4 
C30 Keene Defense, KGD 1.e4 e5 2.f4 Qh4+ 3.g3 Qe7


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