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
The Sicilian Defense: Smith-Morra Gambit Accepted, Siberian Variation is a chess opening classified as ECO B21, reached after 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7. It is a line of the Sicilian Defense. White is to move. 2 named lines continue from this position.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 56 times by this move order. White won 45%, 0% were drawn and Black won 55%. The most popular continuation is 7. O-O (59% of games).
Engine evaluation: +0.13 (Stockfish, depth 48; best line 7. O-O a6 8. Re1 Bd6 9. Be3 Nf6)
- ECO
- B21
- Moves
- 12 plies
- FEN
r1b1kbnr/ppqp1ppp/2n1p3/8/2B1P3/2N2N2/PP3PPP/R1BQK2R w KQkq - 2 7- PGN
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 1500-1999 | 32 | |
| 2000+ | 24 | |
| All | 56 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 7. O-O | 33 (59%) | |
| 7. Qe2 | 16 (29%) | |
| 7. Nb5 | 7 (13%) |
Master games
65 over-the-board games are classified under this line (White 48%, draw 7%, Black 45%). The strongest:
- FM Maximilian Spornberger (2357) – IM Alexander Bertagnolli (2352) 0-1 · TCh-AUT 2nd West 2015-16 · 2015-11-28
- GM Konstantin Sakaev (2596) – CM Ahmed M Alghamdi (2107) 0-1 · World Rapid 2019 · 2019-12-26
- FM Arystan Isanzhulov (2254) – GM Evgeniy Solozhenkin (2441) 1-0 · 1st Archibald Open 2019 · 2019-05-14
- GM Martin Petr (2500) – David Brychta (2149) 1/2-1/2 · ch-CZE Blitz 2016 · 2016-12-17
- FM Moritz Weishaeutel (2404) – GM Vitaly Teterev (2239) 1-0 · Titled Tue 28th Apr 2026 · 2026-04-28
Highest-rated Lichess games
- MiroulLaSurie (2536) – CM SouthAfricanWolf (2573) 0-1 · 2026-09-07 · 180 + 0s
- marc100 (2279) – botvinnik36 (2259) 0-1 · 2026-09-02 · 180 + 2s
- Raptureman (2231) – SwarmIOS (2287) 0-1 · 2026-09-03 · 180 + 0s
Comes from
Sicilian Defense: Smith-Morra Gambit Accepted 1. e4 c5 2. d4 cxd4 3. c3 dxc3
Continuations
- Sicilian Defense: Smith-Morra Gambit Accepted, Larsen Defense B21 · 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, Siberian Variation, Siberian Trap B21 · 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
More Sicilian Defense lines (all)
- Sicilian Defense (1. e4 c5) B20
- Sicilian Defense: Amazon Attack B20
- Sicilian Defense: Big Clamp Formation B20
- Sicilian Defense: Bowdler Attack B20
- Sicilian Defense: Brick Variation B20
- Sicilian Defense: Czerniak Attack B20
- Sicilian Defense: Czerniak Attack, Queen Fianchetto Variation B20
- Sicilian Defense: Euwe Attack, Prins Gambit B20
- Sicilian Defense: Gloria Variation B20
- Sicilian Defense: Grob Variation B20
- Sicilian Defense: Keres Variation B20
- Sicilian Defense: King David's Opening B20
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.