D71 Neo-Grünfeld Defense: Exchange Variation
D71 holds two named lines, all under the name Neo-Grünfeld Defense. It leaves E60 (Grünfeld Defense: Counterthrust Variation) with 5.cxd5 Nxd5. At ten plies, its reference line is the third-shortest of the 10 Neo-Grünfeld Defense codes. White’s pieces and pawns attack five squares in Black’s half, the fourth-lowest count of the 10 Neo-Grünfeld Defense codes. Lines filed under D72 reach one of its named positions by a different move order.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | g6 |
| 3 | g3 | Bg7 |
| 4 | Bg2 | d5 |
| 5 | cxd5 | Nxd5 |
Moves only D71 plays
Same as E67 up to 4.Bg2, then:
- 4...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.
- 5.cxd5 The c-pawn takes the pawn on d5, covering c6 and e6.
- 5...Nxd5 The knight on f6 takes the pawn on d5, opening a line for the bishop on g7.
Lines filed under D71
They begin with two different first moves.
| Name | After the shared start | Plies |
|---|---|---|
| Neo-Grünfeld Defense: Exchange Variation | 1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 | 10 |
| Neo-Grünfeld Defense: Exchange Variation | 1.c4 Nf6 2.g3 g6 3.Bg2 Bg7 4.d4 d5 5.cxd5 Nxd5 6.Nf3 | 11 |
Neo-Grünfeld Defense: Exchange Variation
- 1.c4 The c-pawn advances two squares to c4, covering b5 and d5, opening a line for the queen on d1.
- 1...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.
- 2.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.
- 2...g6 The g-pawn advances to g6, covering f5 and h5, opening a line for the bishop on f8.
- 3.Bg2 The bishop leaves f1 for g2, guarding the rook on h1.
The road to D71
- 1.d4 … 2...g6four earlier stops: A40, A45, A50, E60
- 3.g3E60 Immediate Fianchetto
- 4...d5E60 Counterthrust Variation
- 5...Nxd5D71
The position after 5...Nxd5
White has brought out the 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. White could capture with Bxd5. White is to move and has 33 legal moves.
Codes that branch off from D71
The reference lines of one other code leave D71 from the position after 5...Nxd5, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| D72 | 6.e4 Nb6 7.Ne2 | Neo-Grünfeld Defense: with g3 |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| D73 | Neo-Grünfeld Defense: with g3 | five squares: g1, f3, c4, d5, f6 |
| D85 | Grünfeld Defense: Exchange Variation | seven squares: b1, f1, g2, c3, g3, g7, f8 |
| A87 | Dutch Defense: Leningrad Variation | eight squares: g1, f3, c4, d5, f5, f6, d7, f7 |
| E01 | Catalan Opening: Open Defense | eight squares: c4, d5, e6, f6, g6, e7, g7, f8 |
| E02 | Catalan Opening: Open Defense | eight squares: c4, d5, e6, f6, g6, e7, g7, f8 |
| D00 | Queen’s Pawn Game | nine squares: f1, c2, g2, g3, d5, g6, g7, f8 … |
| D06 | Queen’s Gambit | nine squares: f1, g2, g3, c4, d5, g6, g7, f8 … |
Where lines continue from here
One named line filed under other codes passes through the position after 5...Nxd5. It belongs to the code listed above.
Other move orders
- Neo-Grünfeld Defense: Exchange Variation is also reached inside D72 Neo-Grünfeld Defense: with g3, whose order is 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5.