E61 King’s Indian Defense
E61 holds six named lines, all under the name King’s Indian Defense. It leaves E60 (Indian Defense: West Indian Defense) with 3.Nc3. Lines of 55 other codes continue from its position, the widest spread of the 39 King’s Indian Defense codes. At five plies, its reference line is the shortest of the 39 King’s Indian Defense codes. Black, to move in that position, has 23 legal moves, the second-lowest count of the 39 King’s Indian Defense codes.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | g6 |
| 3 | Nc3 |
The move that completes E61
The reference line of D75 plays all of these moves and continues beyond them; E61 is the position reached at 3.Nc3.
- 3.Nc3 The knight leaves b1 for c3, opening a line for the rook on a1.
Lines filed under E61
All six share their first five plies, the whole reference line.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| King’s Indian Defense | (the shared start itself) | 5 | |
| King’s Indian Defense: Smyslov Variation | 3...Bg7 4.Nf3 d6 5.Bg5 | 9 | |
| King’s Indian Defense: Semi-Classical Variation | 3...Bg7 4.Nf3 O-O 5.e3 d6 6.Be2 | 11 | Black castled |
| King’s Indian Defense: Fianchetto Variation, Benjamin Defense | 3...Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Qb6 | 14 | both castled |
| King’s Indian Defense: Semi-Classical Variation, Queenside Storm Line | 3...Bg7 4.Nf3 O-O 5.e3 d6 6.Be2 Nbd7 7.O-O e5 8.b4 | 15 | both castled |
| King’s Indian Defense: Semi-Classical Variation, Exchange Variation | 3...Bg7 4.Nf3 O-O 5.e3 d6 6.Be2 Nbd7 7.O-O e5 8.dxe5 dxe5 | 16 | both castled |
The road to E61
- 1.d4 … 1...Nf6two earlier stops: A40, A45
- 2.c4A50 Normal Variation
- 2...g6E60 West Indian Defense
- 3.Nc3E61
The position after 3.Nc3
White has brought out the knight on c3; Black the knight on f6.
Codes that branch off from E61
The reference lines of four other codes leave E61 from the position after 3.Nc3, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| D75 | 3...Bg7 4.Nf3 O-O 5.g3 d5 6.cxd5 Nxd5 7.Bg2 c5 8.O-O | Neo-Grünfeld Defense: Delayed Exchange Variation |
| D80 | 3...d5 | Grünfeld Defense |
| E62 | 3...Bg7 4.Nf3 d6 5.g3 | King’s Indian Defense: Fianchetto Variation, Delayed Fianchetto |
| E70 | 3...Bg7 4.e4 | King’s Indian Defense: Normal Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A16 | English Opening: Anglo-Indian Defense, Queen’s Knight Variation | four squares: d2, d4, g6, g7 |
| A50 | Indian Defense: Normal Variation | four squares: b1, c3, g6, g7 |
| A85 | Dutch Defense: Queen’s Knight Variation | four squares: f5, g6, f7, g7 |
| D81 | Grünfeld Defense: Russian Variation, Accelerated Variation | four squares: d1, b3, d5, d7 |
| D82 | Grünfeld Defense: Brinckmann Attack | four squares: c1, f4, d5, d7 |
| D85 | Grünfeld Defense: Exchange Variation | four squares: c4, d5, f6, d7 |
| D90 | Grünfeld Defense: Three Knights Variation | four squares: g1, f3, d5, d7 |
Where lines continue from here
Besides the codes above, they belong to A65, D81, D82, D83, D84, D85, D86, D87, D88, D89, D90, D91, D92, D93, D94, D95, D96, D97, D98, D99, E60, E68, E71, E72, E73, E74, E75, E76, E77, E78, E79, E80, E81, E82, E83, E84, E85, E86, E87, E88, E89, E90, E91, E92, E93, E94, E95, E96, E97, E98, E99.
Other move orders
- King’s Indian Defense: Semi-Classical Variation is also reached inside E60 King’s Indian Defense: Semi-Classical Variation, Hollywood Variation, whose order is 1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.e3 d6 6.Be2.