ecocodes
Volume B · Semi-open games‹ B91B93 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

B92 Sicilian Defense: Najdorf Variation, Opocensky Variation

B92 holds four named lines, all under the name Sicilian Defense. It leaves B90 (Sicilian Defense: Najdorf Variation) with 6.Be2. That final move, by the bishop, opens a line for the rook on h1. Of all other reference positions, the board of B84 (Scheveningen Variation, Classical Variation) comes closest, two squares apart.

Score sheet
#WhiteBlack
1e4c5
2Nf3d6
3d4cxd4
4Nxd4Nf6
5Nc3a6
6Be2

Lines filed under B92

All four share the start 1.e4 c5 2.Nf3 and then split two ways at Black’s move 2.

NameAfter the shared startPliesAt the end
Sicilian Defense: Najdorf Variation, Opocensky Variation2...d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be211
Sicilian Defense: Najdorf Variation, Opocensky Variation2...Nf6 3.Nc3 d6 4.d4 cxd4 5.Nxd4 a6 6.Be2 e5 7.Nb3 Be6 8.Be315
Sicilian Defense: Najdorf Variation, Opocensky Variation, Modern Line2...d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O Be616White castled
Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line2...d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O O-O16both castled

Sicilian Defense: Najdorf Variation, Opocensky Variation

  1. 2...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.
  2. 3.Nc3 The knight leaves b1 for c3, opening a line for the rook on a1, guarding the pawn on e4.
  3. 3...d6 The d-pawn advances to d6, covering c5 and e5, opening a line for the bishop on c8 and the queen on d8.
  4. 4.d4 The d-pawn advances two squares to d4, covering c5 and e5, opening a line for the bishop on c1 and the queen on d1.
  5. 4...cxd4 The c-pawn takes the pawn on d4, covering c3 and e3, attacking the knight on c3.

Sicilian Defense: Najdorf Variation, Opocensky Variation, Modern Line

  1. 2...d6 The d-pawn advances to d6, covering c5 and e5, opening a line for the bishop on c8 and the queen on d8.
  2. 3.d4 The d-pawn advances two squares to d4, covering c5 and e5, opening a line for the bishop on c1 and the queen on d1.
  3. 3...cxd4 The c-pawn takes the pawn on d4, covering c3 and e3.
  4. 4.Nxd4 The knight on f3 takes the pawn on d4, opening a line for the queen on d1.
  5. 4...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.

Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line

  1. 2...d6 The d-pawn advances to d6, covering c5 and e5, opening a line for the bishop on c8 and the queen on d8.
  2. 3.d4 The d-pawn advances two squares to d4, covering c5 and e5, opening a line for the bishop on c1 and the queen on d1.
  3. 3...cxd4 The c-pawn takes the pawn on d4, covering c3 and e3.
  4. 4.Nxd4 The knight on f3 takes the pawn on d4, opening a line for the queen on d1.
  5. 4...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.

The road to B92

  1. 1.e4 … 4.Nxd4six earlier stops: B00, B20, B27, B50
  2. 4...Nf6B54 Main Line
  3. 5...a6B90 Najdorf Variation
  4. 6.Be2B92

The position after 6.Be2

White has brought out the knight on c3, knight on d4 and bishop on e2; Black the knight on f6. White has a half-open d-file; Black a half-open c-file. Black could capture with Nxe4. Black is to move and has 30 legal moves.

WhiteBlackMaterial (pawn units)3838Minor pieces developed31Moves spent on pawns24Pawns on d4, e4, d5, e510Squares attacked in the other half93not castlednot castled

Codes that branch off from B92

The reference lines of one other code leave B92 from the position after 6.Be2, each with its own moves.

CodeMovesReference line
B846...e6Sicilian Defense: Scheveningen Variation, Classical Variation

Closest boards in other codes

CodeLineDiffers on
B58Sicilian Defense: Classical Variationfour squares: a6, c6, a7, b8
B83Sicilian Defense: Scheveningen Variation, Classical Variationfour squares: a6, e6, a7, e7
B91Sicilian Defense: Najdorf Variation, Zagreb Variationfour squares: f1, e2, g2, g3
B93Sicilian Defense: Najdorf Variation, Amsterdam Variationfour squares: f1, e2, f2, f4
B94Sicilian Defense: Najdorf Variationfour squares: c1, f1, e2, g5
B56Sicilian Defense: Classical Variationsix squares: f1, e2, a6, c6, a7, b8
B57Sicilian Defense: Classical Variation, Sozin Attacksix squares: e2, c4, a6, c6, a7, b8

Where lines continue from here

Three named lines filed under other codes pass through the position after 6.Be2. All of them belong to the codes listed above.

Volume B

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