D87 Grünfeld Defense: Exchange Variation, Spassky Variation
D87 holds two named lines, all under the name Grünfeld Defense. It leaves D86 (Grünfeld Defense: Exchange Variation, Classical Variation) with 7...c5 8.Ne2 O-O. Its deepest line, Grünfeld Defense: Exchange Variation, Seville Variation, runs to 12.Bxf7+, the second-longest of the 20 Grünfeld Defense codes. White, to move in that position, has 39 legal moves, the fourth-highest count of the 20 Grünfeld Defense codes. At 16 plies, its reference line is the fourth-longest of the 20 Grünfeld Defense codes.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | g6 |
| 3 | Nc3 | d5 |
| 4 | cxd5 | Nxd5 |
| 5 | e4 | Nxc3 |
| 6 | bxc3 | Bg7 |
| 7 | Bc4 | c5 |
| 8 | Ne2 | O-O |
Moves only D87 plays
Same as D88 up to 8.Ne2, then:
- 8...O-O Black castles kingside, opening a line for the queen on d8, guarding the bishop on g7.
Lines filed under D87
Both share the start 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 c5 8.Ne2 and then split two ways at Black’s move 8.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Grünfeld Defense: Exchange Variation, Spassky Variation | 8...O-O | 16 | Black castled |
| Grünfeld Defense: Exchange Variation, Seville Variation | 8...Nc6 9.Be3 O-O 10.O-O Bg4 11.f3 Na5 12.Bxf7+ | 23 | White +1, both castled, check |
Grünfeld Defense: Exchange Variation, Seville Variation
- 8...Nc6 The knight leaves b8 for c6, opening a line for the rook on a8.
- 9.Be3 The bishop leaves c1 for e3, opening a line for the rook on a1 and the queen on d1.
- 9...O-O Black castles kingside, opening a line for the queen on d8, guarding the bishop on g7.
- 10.O-O White castles kingside, opening a line for the queen on d1, guarding the pawn on g2.
- 10...Bg4 The bishop leaves c8 for g4, opening a line for the rook on a8 and the queen on d8, attacking the knight on e2.
The road to D87
- 1.d4 … 4.cxd5six earlier stops: A40, A45, A50, D80, E60, E61
- 4...Nxd5D85 Exchange Variation
- 7.Bc4D86 Classical Variation
- 8...O-OD87
The position after 8...O-O
White has brought out the knight on e2 and bishop on c4; Black the bishop on g7. White has a half-open b-file; Black a half-open d-file. White could capture with Bxf7+, dxc5. Undefended and attacked: the pawn on c5.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| E74 | King’s Indian Defense: Averbakh Variation, Benoni Defense | nine squares: c1, g1, b2, e2, c3, c4, g5, d6 … |
| E78 | King’s Indian Defense: Four Pawns Attack, Fluid Attack | nine squares: b2, e2, f2, c3, f3, c4, f4, d6 … |
| E91 | King’s Indian Defense: Orthodox Variation | nine squares: b2, e2, c3, f3, c4, c5, d6, f6 … |
| A72 | Benoni Defense: Classical Variation | ten squares: b2, e2, c3, f3, c4, d4, d5, d6 … |
| D97 | Grünfeld Defense: Russian Variation | ten squares: d1, f1, b2, e2, c3, f3, c4, c5 … |
| E77 | King’s Indian Defense: Four Pawns Attack | 11 squares: g1, b2, e2, f2, c3, c4, f4, c5 … |
| E92 | King’s Indian Defense: Orthodox Variation | 11 squares: b2, e2, c3, f3, c4, c5, e5, d6 … |
Where lines continue from here
One named line filed under other codes passes through the position after 8...O-O. It belongs to D89.