D09 Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation
D09 holds four named lines, all under the name Queen’s Gambit. It leaves D08 (Queen’s Gambit Declined: Albin Countergambit, Normal Line) with 4...Nc6 5.g3. When the reference line ends, White is one pawn up on material. Black’s pieces and pawns attack eight squares in White’s half, the fourth-highest count of the 44 Queen’s Gambit codes.
| # | White | Black |
|---|---|---|
| 1 | d4 | d5 |
| 2 | c4 | e5 |
| 3 | dxe5 | d4 |
| 4 | Nf3 | Nc6 |
| 5 | g3 |
Moves only D09 plays
Same as D08 up to 2...e5, then:
- 3.dxe5 The d-pawn takes the pawn on e5, covering d6 and f6, opening a line for the queen on d1.
- 3...d4 The d-pawn advances to d4, covering c3 and e3, opening a line for the queen on d8.
- 4.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1, guarding the pawn on e5.
- 4...Nc6 The knight leaves b8 for c6, opening a line for the rook on a8.
- 5.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.
Lines filed under D09
All four share their first nine plies, the whole reference line and then split three ways at Black’s move 5.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation | (the shared start itself) | 9 | White +1 |
| Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation, Be6 Line | 5...Be6 | 10 | White +1 |
| Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation, Bf5 Line | 5...Bf5 | 10 | White +1 |
| Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation, Bg4 Line | 5...Bg4 | 10 | White +1 |
Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation, Be6 Line
- 5...Be6 The bishop leaves c8 for e6, opening a line for the rook on a8 and the queen on d8.
Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation, Bf5 Line
- 5...Bf5 The bishop leaves c8 for f5, opening a line for the rook on a8 and the queen on d8, attacking the knight on b1.
Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variation, Bg4 Line
- 5...Bg4 The bishop leaves c8 for g4, opening a line for the rook on a8 and the queen on d8, attacking the knight on f3.
The road to D09
- 1.d4 … 2.c4three earlier stops: A40, D00, D06
- 2...e5D08 Albin Countergambit
- 4.Nf3D08 Normal Line
- 5.g3D09
The position after 5.g3
White has brought out the knight on f3; Black the knight on c6. White has a half-open d-file; Black a half-open e-file. Black could capture with Nxe5. Black is to move and has 39 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A27 | English Opening: King’s English Variation, Three Knights System | eight squares: b1, d2, g2, c3, g3, d4, e5, d7 |
| A29 | English Opening: King’s English Variation, Four Knights Variation, Fianchetto Line | eight squares: b1, d2, c3, d4, e5, f6, d7, g8 |
| D07 | Queen’s Gambit Declined: Chigorin Defense | eight squares: g1, g2, f3, g3, d4, d5, e5, e7 |
| D21 | Queen’s Gambit Accepted: Normal Variation | eight squares: g2, g3, c4, d4, e5, c6, e7, b8 |
| D33 | Tarrasch Defense: Rubinstein System | eight squares: b1, c3, c4, d4, c5, d5, e5, c7 |
| A07 | King’s Indian Attack | nine squares: c2, d2, c4, d4, d5, e5, c6, e7 … |
| A09 | Réti Opening | nine squares: d2, g2, g3, d4, d5, e5, c6, e7 … |