D92 Grünfeld Defense: Three Knights Variation, Hungarian Attack
D92 holds a single named line. It leaves D90 (Grünfeld Defense: Three Knights Variation) with 5.Bf4. That final move, by the bishop, opens a line for the rook on a1 and the queen on d1. Of all other reference positions, the board of D91 (Three Knights Variation, Petrosian System) comes closest, two squares apart.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | g6 |
| 3 | Nc3 | d5 |
| 4 | Nf3 | Bg7 |
| 5 | Bf4 |
The road to D92
- 1.d4 … 3...d5six earlier stops: A40, A45, A50, D80, E60, E61
- 4.Nf3D90 Three Knights Variation
- 4...Bg7D90 Three Knights Variation
- 5.Bf4D92
The position after 5.Bf4
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. Undefended and attacked: the pawn on c4. Black is to move and has 34 legal moves.
Codes that branch off from D92
The reference lines of one other code leave D92 from the position after 5.Bf4, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| D93 | 5...O-O 6.e3 | Grünfeld Defense: Three Knights Variation, Hungarian Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| D82 | Grünfeld Defense: Brinckmann Attack | four squares: g1, f3, g7, f8 |
| D94 | Grünfeld Defense: Three Knights Variation, Burille Variation | four squares: c1, e2, e3, f4 |
| D96 | Grünfeld Defense: Russian Variation | four squares: c1, d1, b3, f4 |
| D80 | Grünfeld Defense | six squares: c1, g1, f3, f4, g7, f8 |
| E62 | King’s Indian Defense: Fianchetto Variation, Delayed Fianchetto | six squares: c1, g2, g3, f4, d5, d6 |
| E90 | King’s Indian Defense: Normal Variation, Rare Defenses | six squares: c1, e2, e4, f4, d5, d6 |
| D15 | Slav Defense: Three Knights Variation | seven squares: c1, f4, c6, g6, c7, g7, f8 |
Where lines continue from here
One named line filed under other codes passes through the position after 5.Bf4. It belongs to the code listed above.