Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense (4… Nc6 5. Nf3 g6)
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6
The Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense is a chess opening classified as ECO B21, reached after 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6. It is a line of the Sicilian Defense. White is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 1,133 times by this move order. White won 54%, 4% were drawn and Black won 42%. The most popular continuation is 6. Bc4 (87% of games).
Engine evaluation: 0.00 (Stockfish, depth 38; best line 6. Bb5 Bg7 7. O-O d6 8. e5 Bg4)
- ECO
- B21
- Moves
- 10 plies
- FEN
r1bqkbnr/pp1ppp1p/2n3p1/8/4P3/2N2N2/PP3PPP/R1BQKB1R w KQkq - 0 6- PGN
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 170 | |
| 1500-1999 | 756 | |
| 2000+ | 207 | |
| All | 1,133 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 6. Bc4 | 991 (87%) | |
| 6. Bf4 | 34 (3%) | |
| 6. Bb5 | 30 (3%) | |
| 6. Be3 | 21 (2%) | |
| 6. Bd3 | 15 (1%) | |
| 6. e5 | 13 (1%) | |
| 6. Ng5 | 5 (0%) | |
| 6. Be2 | 5 (0%) |
Master games
145 over-the-board games are classified under this line (White 45%, draw 12%, Black 43%). The strongest:
- GM Jose Eduardo Martinez Alcantara (2612) – GM Vladimir Fedoseev (2685) 1-0 · Bullet Chess Losers 2024 · 2024-06-11
- FM Artem Gilevych (2407) – GM Francisco Vallejo Pons (2705) 0-1 · 50th Italian Teams 2018 · 2018-04-27
- GM Nikolas Theodorou (2633) – IM Yoseph Theolifus Taher (2451) 1-0 · 3rd 3-0 Thu 13th Aug 2026 · 2026-08-13
- IM Mohamed Ezat (2401) – IM Praveen Balakrishnan (2498) 1-0 · Titled Tuesday 21st July · 2020-07-21
- FM Alejandro Domingo Nunez (2318) – IM Yagiz Kaan Erdogmus (2569) 0-1 · Titled Tue 11th Jun Late · 2024-06-11
Highest-rated Lichess games
- MiroulLaSurie (2538) – IM MrSuccess (2684) 1-0 · 2026-09-02 · 180 + 0s
- rusert13 (2492) – yeti806 (2563) 0-1 · 2026-09-01 · 180 + 2s
- MiroulLaSurie (2549) – bububublika (2489) 1-0 · 2026-09-05 · 180 + 0s
Comes from
Sicilian Defense: Smith-Morra Gambit Accepted 1. e4 c5 2. d4 cxd4 3. c3 dxc3
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.