D75 Neo-Grünfeld Defense: Delayed Exchange Variation
D75 holds two named lines, all under the name Neo-Grünfeld Defense. It leaves E61 (King’s Indian Defense) with 3...Bg7 4.Nf3 O-O 5.g3 d5 6.cxd5 Nxd5 7.Bg2 c5 8.O-O. White has three minor pieces off their first squares, the most of the 10 Neo-Grünfeld Defense codes. Black, to move in that position, has 41 legal moves, the most of the 10 Neo-Grünfeld Defense codes. At 15 plies, its reference line is the longest of the 10 Neo-Grünfeld Defense codes.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | g6 |
| 3 | Nc3 | Bg7 |
| 4 | Nf3 | O-O |
| 5 | g3 | d5 |
| 6 | cxd5 | Nxd5 |
| 7 | Bg2 | c5 |
| 8 | O-O |
Moves only D75 plays
Same as E62 up to 4.Nf3, then:
- 4...O-O Black castles kingside, opening a line for the queen on d8, guarding the bishop on g7.
- 5.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.
- 5...d5 The d-pawn advances two squares to d5, covering c4 and e4, opening a line for the bishop on c8 and the queen on d8.
- 6.cxd5 The c-pawn takes the pawn on d5, covering c6 and e6.
- 6...Nxd5 The knight on f6 takes the pawn on d5, opening a line for the bishop on g7, attacking the knight on c3.
- 7.Bg2 The bishop leaves f1 for g2, opening a line for the rook on h1, guarding the rook on h1.
- 7...c5 The c-pawn advances two squares to c5, covering b4 and d4, opening a line for the queen on d8.
- 8.O-O White castles kingside, opening a line for the queen on d1, guarding the bishop on g2.
Lines filed under D75
Both share the start 1.d4 Nf6 and then split two ways at White’s move 2.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Neo-Grünfeld Defense: Delayed Exchange Variation | 2.c4 g6 3.Nc3 Bg7 4.Nf3 O-O 5.g3 d5 6.cxd5 Nxd5 7.Bg2 c5 8.O-O | 15 | both castled |
| Neo-Grünfeld Defense: Delayed Exchange Variation | 2.Nf3 g6 3.c4 Bg7 4.g3 O-O 5.Bg2 d5 6.cxd5 Nxd5 7.O-O c5 8.dxc5 | 15 | White +1, both castled |
Neo-Grünfeld Defense: Delayed Exchange Variation
- 2.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1.
- 2...g6 The g-pawn advances to g6, covering f5 and h5, opening a line for the bishop on f8.
- 3.c4 The c-pawn advances two squares to c4, covering b5 and d5, opening a line for the queen on d1.
- 3...Bg7 The bishop leaves f8 for g7, opening a line for the rook on h8, guarding the rook on h8.
- 4.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.
The road to D75
- 1.d4 … 2.c4three earlier stops: A40, A45, A50
- 2...g6E60 West Indian Defense
- 3.Nc3E61 King’s Indian Defense
- 8.O-OD75
The position after 8.O-O
White has brought out the knight on c3, knight on f3 and bishop on g2; Black the knight on d5 and bishop on g7. White has a half-open c-file; Black a half-open d-file. Black could capture with Bxd4, Nxc3, cxd4.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| D74 | Neo-Grünfeld Defense: Delayed Exchange Variation | four squares: b1, c3, c5, c7 |
| E65 | King’s Indian Defense: Fianchetto Variation, Yugoslav Variation | four squares: c4, d5, d6, f6 |
| D79 | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | five squares: b1, c3, c5, d5, f6 |
| A39 | English Opening: Symmetrical Variation, Mecking Variation | six squares: c4, d5, c6, f6, d7, b8 |
| D76 | Neo-Grünfeld Defense: Delayed Exchange Variation | six squares: b1, c3, c5, d5, b6, c7 |
| A63 | Benoni Defense: Fianchetto Variation, Hastings Defense | seven squares: d4, d5, d6, f6, d7, e7, b8 |
| D77 | Neo-Grünfeld Defense: Classical Variation | seven squares: b1, c3, c4, c5, d5, f6, c7 |