B31 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation
B31 holds five named lines, all under the name Sicilian Defense. It leaves B30 (Sicilian Defense: Nyezhmetdinov-Rossolimo Attack) with 3...g6. None of its five lines contains a capture. That final move, by the g-pawn, covers f5 and h5 and opens a line for the bishop on f8.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | Nc6 |
| 3 | Bb5 | g6 |
Moves only B31 plays
Same as B30 up to 2...Nc6, then:
- 3.Bb5 The bishop leaves f1 for b5, opening a line for the rook on h1, attacking the knight on c6.
- 3...g6 The g-pawn advances to g6, covering f5 and h5, opening a line for the bishop on f8.
Lines filed under B31
All five share their first six plies, the whole reference line.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | (the shared start itself) | 6 | |
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Gufeld Gambit | 4.O-O Bg7 5.c3 e5 6.d4 | 11 | White castled |
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Lutikov Gambit | 4.O-O Bg7 5.c3 Nf6 6.d4 | 11 | White castled |
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Totsky Attack | 4.O-O Bg7 5.c3 Nf6 6.Qa4 | 11 | White castled |
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation | 4.O-O Bg7 5.Re1 e5 6.b4 | 11 | White castled |
The road to B31
- 1.e4 … 2.Nf3three earlier stops: B00, B20, B27
- 2...Nc6B30 Old Sicilian
- 3.Bb5B30 Nyezhmetdinov-Rossolimo Attack
- 3...g6B31
The position after 3...g6
White has brought out the knight on f3 and bishop on b5; Black the knight on c6. White could capture with Bxc6. White is to move and has 33 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B27 | Sicilian Defense | six squares: f1, b5, c6, g6, g7, b8 |
| B32 | Sicilian Defense: Open | six squares: f1, d2, d4, b5, g6, g7 |
| B34 | Sicilian Defense: Accelerated Dragon, Exchange Variation | six squares: f1, d2, f3, b5, c5, c6 |
| B51 | Sicilian Defense: Moscow Variation | six squares: c6, d6, g6, d7, g7, b8 |
| C60 | Ruy Lopez | six squares: c5, e5, g6, c7, e7, g7 |
| B52 | Sicilian Defense: Moscow Variation, Main Line | seven squares: c6, d6, g6, d7, g7, b8, c8 |
| C64 | Ruy Lopez: Classical Variation | seven squares: c5, e5, g6, c7, e7, g7, f8 |