ecocodes
Volume B · Semi-open games‹ B17B19 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

B18 Caro-Kann Defense: Classical Variation

B18 holds five named lines, all under the name Caro-Kann Defense. It leaves B15 (Caro-Kann Defense: Main Line) with 4...Bf5. That final move, by the bishop, opens a line for the queen on d8 and attacks the knight on e4. Of all other reference positions, the board of B16 (Finnish Variation) comes closest, four squares apart.

Score sheet
#WhiteBlack
1e4c6
2d4d5
3Nd2dxe4
4Nxe4Bf5

Lines filed under B18

All five share their first eight plies, the whole reference line and then split two ways at White’s move 5.

NameAfter the shared startPlies
Caro-Kann Defense: Classical Variation(the shared start itself)8
Caro-Kann Defense: Classical Variation, Flohr Variation5.Ng3 Bg6 6.Nh311
Caro-Kann Defense: Classical Variation, Main Line5.Ng3 Bg6 6.h411
Caro-Kann Defense: Classical Variation, Maróczy Attack5.Ng3 Bg6 6.f411
Caro-Kann Defense: Martian Gambit5.Ng5 Bg6 6.N1f3 h6 7.Ne613

The road to B18

  1. 1.e4 … 2...d5four earlier stops: B00, B10, B12
  2. 3.Nd2B12 Modern Variation
  3. 4.Nxe4B15 Main Line
  4. 4...Bf5B18

The position after 4...Bf5

White has brought out the knight on e4; Black the bishop on f5. White has a half-open e-file; Black a half-open d-file. White is to move and has 42 legal moves.

WhiteBlackMaterial (pawn units)3838Minor pieces developed11Moves spent on pawns23Pawns on d4, e4, d5, e510Squares attacked in the other half94not castlednot castled

Codes that branch off from B18

The reference lines of one other code leave B18 from the position after 6.h4, each with its own moves.

CodeMovesReference line
B196...h6 7.Nf3 Nd7Caro-Kann Defense: Classical Variation

Closest boards in other codes

CodeLineDiffers on
B17Caro-Kann Defense: Karpov Variationfour squares: f5, d7, b8, c8
B12Caro-Kann Defensefive squares: b1, e4, f5, d7, c8
B13Caro-Kann Defense: Exchange Variationfive squares: b1, e4, d5, f5, c8
B10Caro-Kann Defenseseven squares: b1, d2, d4, e4, f5, d7, c8
A40Queen’s Pawn Gameeight squares: b1, e2, e4, f5, c6, c7, d7, c8
A41Queen’s Pawn Gameeight squares: b1, e2, e4, f5, c6, d6, c7, c8
A43Benoni Defense: Old Benonieight squares: b1, e2, e4, c5, f5, c6, d7, c8

Where lines continue from here

Four named lines filed under other codes pass through the position after 4...Bf5. All of them belong to the codes listed above.

Volume B

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Open this line in the finderAll Caro-Kann Defense codes