Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation
1. e4 c5 2. Nf3 Nc6 3. Bb5 g6
The Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation is a chess opening classified as ECO B31, reached after 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6. It is a line of the Sicilian Defense. White is to move. 4 named lines continue from this position.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 9,127 times by this move order. White won 50%, 5% were drawn and Black won 45%. The most popular continuation is 4. Bxc6 (44% of games).
Engine evaluation: +0.24 (Stockfish, depth 60; best line 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O)
- ECO
- B31
- Moves
- 6 plies
- FEN
r1bqkbnr/pp1ppp1p/2n3p1/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4- PGN
1. e4 c5 2. Nf3 Nc6 3. Bb5 g6
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 1,515 | |
| 1500-1999 | 4,275 | |
| 2000+ | 3,337 | |
| All | 9,127 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 4. Bxc6 | 3,980 (44%) | |
| 4. O-O | 3,084 (34%) | |
| 4. c3 | 783 (9%) | |
| 4. d4 | 432 (5%) | |
| 4. Nc3 | 428 (5%) | |
| 4. d3 | 242 (3%) | |
| 4. c4 | 45 (0%) | |
| 4. b3 | 34 (0%) |
Master games
19,618 over-the-board games are classified under this line (White 47%, draw 23%, Black 30%). The strongest:
- ScorpioNN 3.0.7.1 (3812) – Houdini 6.03 (3854) 1/2-1/2 · TCEC 20 Premier 2020 · 2020-04-06
- Houdini 6.03 (3854) – ScorpioNN 3.0.7.1 (3812) 1/2-1/2 · TCEC 20 Premier 2020 · 2020-04-03
- Stockfish dev-20260318-d173a06 (3807) – Reckless 0.10.0-dev-b5462f11 (3763) 1/2-1/2 · TCEC 29 Superfinal 2026 · 2026-03-31
- Reckless 0.10.0-dev-b5462f11 (3763) – Stockfish dev-20260318-d173a06 (3807) 1/2-1/2 · TCEC 29 Superfinal 2026 · 2026-03-30
- Fire 8_beta (3729) – rofChade 2.303 (3661) 1/2-1/2 · TCEC 18 Premier 2020 · 2020-06-07
Highest-rated Lichess games
- GM Dr_Tiger (2943) – Cuentatorneos (2663) 1-0 · 2026-09-02 · 180 + 0s
- IM Hripach007 (2702) – FM Squoznyak (2893) 0-1 · 2026-09-06 · 180 + 0s
- Tempstream (2734) – GM sillyMASTER (2861) 0-1 · 2026-09-03 · 180 + 0s
Comes from
Sicilian Defense: Nyezhmetdinov-Rossolimo Attack 1. e4 c5 2. Nf3 Nc6 3. Bb5
Continuations
- Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Gufeld Gambit B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 e5 6. d4
- Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Lutikov Gambit B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. d4
- Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Totsky Attack B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Qa4
- Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4
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.