ecocodes
Volume D · Closed and semi-closed games‹ D10D12 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

D11 Slav Defense: Modern Line

D11 holds eight named lines, all under the name Slav Defense. It leaves D10 (Slav Defense) with 3.Nf3. Black, to move in that position, has 29 legal moves, the fewest of the 10 Slav Defense codes. Lines of 18 other codes continue from its position, the second-widest spread of the 10 Slav Defense codes. At five plies, its reference line is the second-shortest of the 10 Slav Defense codes.

Score sheet
#WhiteBlack
1d4d5
2c4c6
3Nf3

The move that completes D11

The reference line of D12 plays all of these moves and continues beyond them; D11 is the position reached at 3.Nf3.

  1. 3.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1.

Lines filed under D11

All eight share the start 1.d4 d5 and then split two ways at White’s move 2.

NameAfter the shared startPliesAt the end
Slav Defense: Modern Line2.c4 c6 3.Nf35
Slav Defense: Bonet Gambit2.c4 c6 3.Nf3 Nf6 4.Bg57
Slav Defense: Breyer Variation2.c4 c6 3.Nf3 Nf6 4.Nbd27
Slav Defense: Quiet Variation2.c4 c6 3.Nf3 Nf6 4.e37
Slav Defense: Quiet Variation, Pin Defense2.c4 c6 3.Nf3 Nf6 4.e3 Bg48
Slav Defense: Modern Line2.c4 c6 3.Nf3 Nf6 4.g3 dxc4 5.Bg2 g610Black +1
Slav Defense: Modern Line2.c4 c6 3.Nf3 Nf6 4.g3 Bg4 5.Bg2 e6 6.O-O11White castled
Slav Defense: Modern Line2.Nf3 Nf6 3.g3 c6 4.Bg2 Bg4 5.O-O Nbd7 6.c411White castled

The road to D11

  1. 1.d4 … 1...d5two earlier stops: A40, D00
  2. 2.c4D06 Queen’s Gambit
  3. 2...c6D10 Slav Defense
  4. 3.Nf3D11

The position after 3.Nf3

White has brought out the knight on f3; Black has not yet moved a knight or bishop. Black could capture with dxc4. Undefended and attacked: the pawn on c4.

WhiteBlackMaterial (pawn units)3939Minor pieces developed10Moves spent on pawns22Pawns on d4, e4, d5, e511Squares attacked in the other half64not castlednot castled

Codes that branch off from D11

The reference lines of three other codes leave D11 from two of its named positions; “From” gives the last part of that position’s name.

CodeFromMovesReference line
D12Quiet Variation4...Bf5Slav Defense: Quiet Variation, Schallopp Defense
D13Modern Line3...Nf6 4.cxd5 cxd5Slav Defense: Exchange Variation
D15Modern Line3...Nf6 4.Nc3Slav Defense: Three Knights Variation

Closest boards in other codes

CodeLineDiffers on
A09Réti Openingfour squares: d2, d4, c6, c7
A12Réti Opening: Anglo-Slav Variation, Bogoljubow Variationfour squares: b2, d2, b3, d4
D02Queen’s Pawn Game: Zukertort Variationfour squares: c2, c4, c6, c7
D06Queen’s Gambitfour squares: g1, f3, c6, c7
D21Queen’s Gambit Accepted: Normal Variationfour squares: c4, d5, c6, c7
D07Queen’s Gambit Declined: Chigorin Defensefive squares: g1, f3, c6, c7, b8
A06Zukertort Openingsix squares: c2, d2, c4, d4, c6, c7

Where lines continue from here

Besides the codes above, they belong to D14, D16, D17, D18, D19, D30, D43, D44, D45, D46, D47, D48, D49, D52, E09.

Volume D

  1. 00
  2. 01
  3. 02
  4. 03
  5. 04
  6. 05
  7. 06
  8. 07
  9. 08
  10. 09
  11. 10
  12. 11
  13. 12
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  100. 99

Volume E

  1. 00
  2. 01
  3. 02
  4. 03
  5. 04
  6. 05
  7. 06
  8. 07
  9. 08
  10. 09
  11. 10
  12. 11
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  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99

Other move orders

  • Slav Defense: Modern Line is also reached inside A07 King’s Indian Attack: Keres Variation, whose order is 1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.O-O Nd7 5.d4 Ngf6 6.c4.
  • Slav Defense: Quiet Variation is also reached inside D45 Semi-Slav Defense: Stoltz Variation, whose order is 1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.e3.

Open this line in the finderAll Slav Defense codes