D85 Grünfeld Defense: Exchange Variation
D85 holds seven named lines, all under the name Grünfeld Defense. It leaves D80 (Grünfeld Defense) with 4.cxd5 Nxd5. With seven named lines it is level for the largest code of the 20 Grünfeld Defense codes. Lines of four other codes continue from its position, the third-widest spread of the 20 Grünfeld Defense codes. Black’s pieces and pawns attack six squares in White’s half, the second-highest count of the 20 Grünfeld Defense codes.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | g6 |
| 3 | Nc3 | d5 |
| 4 | cxd5 | Nxd5 |
The move that completes D85
The reference line of D86 plays all of these moves and continues beyond them; D85 is the position reached at 4...Nxd5.
- 4...Nxd5 The knight on f6 takes the pawn on d5, attacking the knight on c3.
Lines filed under D85
All seven 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 |
|---|---|---|---|
| Grünfeld Defense: Exchange Variation | 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 | 8 | |
| Grünfeld Defense: Exchange Variation, Nadanian Attack | 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.Na4 | 9 | |
| Grünfeld Defense: Exchange Variation, Modern Exchange Variation | 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 | 13 | |
| Grünfeld Defense: Exchange Variation, Modern Exchange Variation | 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 | 14 | |
| Grünfeld Defense: Exchange Variation, Modern Exchange Variation | 2.Nf3 g6 3.c4 Bg7 4.Nc3 d5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 c5 8.Rb1 | 15 | |
| Grünfeld Defense: Exchange Variation, Modern Exchange Variation, Kramnik’s Line | 2.Nf3 g6 3.c4 Bg7 4.Nc3 d5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 c5 8.h3 | 15 | |
| Grünfeld Defense: Exchange Variation, Modern Exchange Variation, Pawn Grab Line | 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Rb1 O-O 9.Be2 Nc6 10.d5 Bxc3+ | 20 | Black +1, Black castled, check |
The road to D85
- 1.d4 … 2...g6four earlier stops: A40, A45, A50, E60
- 3.Nc3E61 King’s Indian Defense
- 3...d5D80 Grünfeld Defense
- 4...Nxd5D85
The position after 4...Nxd5
White has brought out the knight on c3; Black the knight on d5. White has a half-open c-file; Black a half-open d-file. White could capture with Nxd5. White is to move and has 31 legal moves.
Codes that branch off from D85
The reference lines of one other code leave D85 from the position after 4...Nxd5, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| D86 | 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 | Grünfeld Defense: Exchange Variation, Classical Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| E61 | King’s Indian Defense | four squares: c4, d5, f6, d7 |
| D81 | Grünfeld Defense: Russian Variation, Accelerated Variation | five squares: d1, b3, c4, d5, f6 |
| D82 | Grünfeld Defense: Brinckmann Attack | five squares: c1, c4, f4, d5, f6 |
| D90 | Grünfeld Defense: Three Knights Variation | five squares: g1, f3, c4, d5, f6 |
| E60 | Indian Defense: West Indian Defense | six squares: b1, c3, c4, d5, f6, d7 |
| D00 | Queen’s Pawn Game | seven squares: b1, c2, c3, d5, g6, g7, g8 |
| D01 | Richter-Veresov Attack | seven squares: c1, c2, d5, g5, f6, g6, g7 |