ecocodes
Volume E · Indian defenses‹ E82E84 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

E83 King’s Indian Defense: Sämisch Variation, Yates Defense

E83 holds three named lines, all under the name King’s Indian Defense. It leaves E81 (King’s Indian Defense: Sämisch Variation, Normal Defense) with 6.Be3 Nc6. That final move, by the knight, opens a line for the rook on a8. Of all other reference positions, the board of E82 (Sämisch Variation, Double Fianchetto) comes closest, four squares apart.

Score sheet
#WhiteBlack
1d4Nf6
2c4g6
3Nc3Bg7
4e4d6
5f3O-O
6Be3Nc6

Lines filed under E83

All three share their first 12 plies, the whole reference line.

NameAfter the shared startPliesAt the end
King’s Indian Defense: Sämisch Variation, Yates Defense(the shared start itself)12Black castled
King’s Indian Defense: Sämisch Variation, Panno Formation7.Nge2 a614Black castled
King’s Indian Defense: Sämisch Variation, Ruban Variation7.Nge2 Rb814Black castled

King’s Indian Defense: Sämisch Variation, Panno Formation

  1. 7.Nge2 The knight leaves g1 for e2, opening a line for the rook on h1.
  2. 7...a6 The a-pawn advances to a6, covering b5, opening a line for the rook on a8.

King’s Indian Defense: Sämisch Variation, Ruban Variation

  1. 7.Nge2 The knight leaves g1 for e2, opening a line for the rook on h1.
  2. 7...Rb8 The rook goes from a8 to b8.

The road to E83

  1. 1.d4 … 4...d6seven earlier stops: A40, A45, A50, E60, E61, E70
  2. 5.f3E80 Sämisch Variation
  3. 5...O-OE81 Normal Defense
  4. 6...Nc6E83

The position after 6...Nc6

White has brought out the knight on c3 and bishop on e3; Black the knight on c6, knight on f6 and bishop on g7. White is to move and has 40 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed23Moves spent on pawns42Pawns on d4, e4, d5, e520Squares attacked in the other half75not castledcastled kingside, move 5

Codes that branch off from E83

The reference lines of one other code leave E83 from the position after 7...a6, each with its own moves.

CodeMovesReference line
E848.Qd2 Rb8King’s Indian Defense: Sämisch Variation, Panno Main Line

Closest boards in other codes

CodeLineDiffers on
E85King’s Indian Defense: Sämisch Variation, Orthodox Variationfour squares: e5, c6, e7, b8
E87King’s Indian Defense: Sämisch Variation, Closed Variationsix squares: d4, d5, e5, c6, e7, b8
B76Sicilian Defense: Dragon Variation, Yugoslav Attackseven squares: g1, c2, c4, d4, c6, c7, b8
E79King’s Indian Defense: Four Pawns Attack, Exchange Variationseven squares: f1, g1, e2, f3, d4, f4, c7
E86King’s Indian Defense: Sämisch Variationseven squares: g1, e2, e5, c6, c7, e7, b8
E88King’s Indian Defense: Sämisch Variation, Closed Variationseven squares: d4, d5, e5, c6, c7, e7, b8
B77Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Lineeight squares: d1, f1, g1, c2, d2, c4, d4, c7

Where lines continue from here

One named line filed under other codes passes through the position after 6...Nc6. It belongs to the code listed above.

Volume E

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Open this line in the finderAll King’s Indian Defense codes