D93 Grünfeld Defense: Three Knights Variation, Hungarian Variation
D93 holds a single named line. It leaves D92 (Grünfeld Defense: Three Knights Variation, Hungarian Attack) with 5...O-O 6.e3. That final move, by the e-pawn, covers d4 and f4 and opens a line for the queen on d1 and the bishop on f1. Of all other reference positions, the board of D83 (Brinckmann Attack, Grünfeld Gambit) comes closest, two squares apart.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | g6 |
| 3 | Nc3 | d5 |
| 4 | Nf3 | Bg7 |
| 5 | Bf4 | O-O |
| 6 | e3 |
Moves only D93 plays
Same as D92 up to 5.Bf4, then:
- 5...O-O Black castles kingside, opening a line for the queen on d8, guarding the bishop on g7.
- 6.e3 The e-pawn advances to e3, covering d4 and f4, opening a line for the queen on d1 and the bishop on f1.
The road to D93
- 1.d4 … 4.Nf3seven earlier stops: A40, A45, A50, D80, D90, E60, E61
- 4...Bg7D90 Three Knights Variation
- 5.Bf4D92 Hungarian Attack
- 6.e3D93
The position after 6.e3
White has brought out the knight on c3, knight on f3 and bishop on f4; Black the knight on f6 and bishop on g7. Black could capture with dxc4. Black is to move and has 32 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| D95 | Grünfeld Defense: Three Knights Variation, Vienna Variation | four squares: c1, d1, b3, f4 |
| D55 | Queen’s Gambit Declined: Modern Variation, Normal Line | six squares: f4, g5, e6, g6, e7, g7 |
| D94 | Grünfeld Defense: Three Knights Variation, Burille Variation | six squares: c1, f4, e8, f8, g8, h8 |
| D97 | Grünfeld Defense: Russian Variation | seven squares: c1, d1, e3, c4, e4, f4, d5 |
| E51 | Nimzo-Indian Defense: Normal Variation, Ragozin Variation | seven squares: c1, b4, f4, e6, g6, e7, g7 |
| D60 | Queen’s Gambit Declined: Orthodox Defense | eight squares: f4, g5, e6, g6, d7, e7, g7, b8 |
| D91 | Grünfeld Defense: Three Knights Variation, Petrosian System | eight squares: e2, e3, f4, g5, e8, f8, g8, h8 |