B21 — Sicilian Defense: McDonnell Attack
Semi-Open Games incl. Sicilian (B00–B99)
1. e4 c5 2. f4
Full page: Sicilian Defense: McDonnell Attack →ECO B21 covers Sicilian Defense: McDonnell Attack and related lines (Sicilian Defense: McDonnell Attack, Sicilian Defense: Smith-Morra Gambit, Sicilian Defense: Halasz Gambit, Sicilian Defense: McDonnell Attack, Toilet Variation). Main line 1. e4 c5 2. f4 with variations, statistics, and the best responses.
34 lines under B21
Sicilian Defense: McDonnell Attack
1. e4 c5 2. f4
Sicilian Defense: Smith-Morra Gambit
1. e4 c5 2. d4
Sicilian Defense: Halasz Gambit
1. e4 c5 2. d4 cxd4 3. f4
Sicilian Defense: McDonnell Attack, Toilet Variation
1. e4 c5 2. f4 d5 3. Nc3
Sicilian Defense: Morphy Gambit
1. e4 c5 2. d4 cxd4 3. Nf3
Sicilian Defense: Smith-Morra Gambit
1. e4 c5 2. d4 cxd4 3. c3
Bird Opening: Dutch Variation, Batavo Gambit
1. e4 c5 2. f4 d5 3. Nf3 dxe4
Sicilian Defense: McDonnell Attack, Tal Gambit
1. e4 c5 2. f4 d5 3. exd5 Nf6
Sicilian Defense: Smith-Morra Gambit Accepted
1. e4 c5 2. d4 cxd4 3. c3 dxc3
Sicilian Defense: Smith-Morra Gambit Declined, Alapin Formation
1. e4 c5 2. d4 cxd4 3. c3 Nf6
Sicilian Defense: Smith-Morra Gambit Declined, Center Formation
1. e4 c5 2. d4 cxd4 3. c3 e5
Sicilian Defense: Smith-Morra Gambit Declined, Push Variation
1. e4 c5 2. d4 cxd4 3. c3 d3
Sicilian Defense: Smith-Morra Gambit Declined, Scandinavian Formation
1. e4 c5 2. d4 cxd4 3. c3 d5
Sicilian Defense: Smith-Morra Gambit Declined, Wing Formation
1. e4 c5 2. d4 cxd4 3. c3 Qa5
Sicilian Defense: Morphy Gambit, Andreaschek Gambit
1. e4 c5 2. d4 cxd4 3. Nf3 e5 4. c3
Sicilian Defense: Smith-Morra Gambit Accepted, Danish Variation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nf3
Sicilian Defense: Smith-Morra Gambit Declined, Dubois Variation
1. e4 c5 2. d4 cxd4 3. c3 d3 4. c4
Sicilian Defense: Coles Sicilian Gambit
1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Bc4
Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6
Sicilian Defense: Smith-Morra Gambit Accepted, Kan Formation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6
Sicilian Defense: Smith-Morra Gambit Accepted, Morphy Defense
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bc5
Sicilian Defense: Smith-Morra Gambit Accepted, Paulsen Formation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6
Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4
Sicilian Defense: Smith-Morra Gambit Accepted, Scheveningen Formation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6
Sicilian Defense: Smith-Morra Gambit Accepted, Siberian Variation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7
Sicilian Defense: Smith-Morra Gambit Accepted, Taimanov Formation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Bc4 a6 6. Nf3 Ne7
Sicilian Defense: Smith-Morra Gambit Accepted, Chicago Defense
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 e6 6. Bc4 Nf6 7. O-O a6
Sicilian Defense: Smith-Morra Gambit Accepted, Classical Formation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 a6 7. O-O Nf6
Sicilian Defense: Smith-Morra Gambit Accepted, Finegold Defense
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 d6 6. Bc4 a6 7. O-O Be7 8. Qe2 Nf6
Sicilian Defense: Smith-Morra Gambit Accepted, Larsen Defense
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 a6 8. O-O Bd6
Sicilian Defense: Smith-Morra Gambit Accepted, Morphy Defense Deferred
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 7. O-O b5 8. Bb3 Bc5
Sicilian Defense: Smith-Morra Gambit Accepted, Siberian Variation, Siberian Trap
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 Nf6 8. O-O Ng4
Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5
Sicilian Defense: Smith-Morra Gambit Accepted, Chicago Defense
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5 9. Bb3 Ra7