D30 Queen’s Gambit Declined
Also filed here: Semi-Slav Defense.
D30 holds 14 named lines from two openings, most of them (12) under Queen’s Gambit. It leaves D06 (Queen’s Gambit) with 2...e6. Lines of 26 other codes continue from its position, the second-widest spread of the 44 Queen’s Gambit codes. With 14 named lines it is the fourth-largest code of the 44 Queen’s Gambit codes.
| # | White | Black |
|---|---|---|
| 1 | d4 | d5 |
| 2 | c4 | e6 |
The move that completes D30
The reference line of D31 plays all of these moves and continues beyond them; D30 is the position reached at 2...e6.
- 2...e6 The e-pawn advances to e6, covering d5 and f5, opening a line for the queen on d8 and the bishop on f8.
Lines filed under D30
All 14 share the start 1.d4 and then split two ways at Black’s move 1.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Queen’s Gambit Declined | 1...d5 2.c4 e6 | 4 | |
| Queen’s Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch | 1...d5 2.c4 e6 3.Nf3 c5 | 6 | |
| Queen’s Gambit Declined: Traditional Variation | 1...Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 | 7 | |
| Queen’s Gambit Declined: Capablanca Variation | 1...Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 h6 | 8 | |
| Queen’s Gambit Declined: Vienna Variation | 1...Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 Bb4+ | 8 | check |
| Queen’s Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch Bishop Attack | 1...d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.Bg5 | 9 | |
| Semi-Slav Defense: Quiet Variation | 1...d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Nbd2 | 9 | |
| Queen’s Gambit Declined: Spielmann Variation | 1...d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2 g6 | 10 | |
| Semi-Slav Defense: Quiet Variation | 1...d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Nbd2 Nbd7 | 10 | |
| Queen’s Gambit Declined | 1...d5 2.c4 e6 3.Nf3 c6 4.Qc2 dxc4 5.Qxc4 Nf6 6.g3 | 11 | |
| Queen’s Gambit Declined: Capablanca Variation | 1...Nf6 2.Nf3 e6 3.c4 d5 4.Bg5 c6 5.Nbd2 Nbd7 6.e3 | 11 | |
| Queen’s Gambit Declined: Traditional Variation | 1...Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 dxc4 5.Qa4+ c6 6.Qxc4 | 11 | |
| Queen’s Gambit Declined: Semmering Variation | 1...d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Nbd2 Nbd7 6.Bd3 c5 | 12 | |
| Queen’s Gambit Declined: Stonewall Variation | 1...d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Nbd2 Ne4 6.Bd3 f5 | 12 |
The road to D30
- 1.d4one earlier stop: A40
- 1...d5D00 Queen’s Pawn Game
- 2.c4D06 Queen’s Gambit
- 2...e6D30
The position after 2...e6
White could capture with cxd5. White is to move and has 30 legal moves.
Codes that branch off from D30
The reference lines of one other code leave D30 from the position after 2...e6, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| D31 | 3.Nc3 | Queen’s Gambit Declined: Queen’s Knight Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| D08 | Queen’s Gambit Declined: Albin Countergambit | two squares: e5, e6 |
| A13 | English Opening: Agincourt Defense | four squares: d2, d4, d5, d7 |
| C01 | French Defense: Exchange Variation | four squares: c2, e2, c4, d5 |
| C02 | French Defense: Advance Variation | four squares: c2, e2, c4, e5 |
| D00 | Queen’s Pawn Game | four squares: c2, c4, e6, e7 |
| D07 | Queen’s Gambit Declined: Chigorin Defense | four squares: c6, e6, e7, b8 |
| D10 | Slav Defense | four squares: c6, e6, c7, e7 |
Where lines continue from here
Besides the codes above, they belong to D24, D32, D33, D34, D35, D36, D37, D40, D41, D45, D48, D50, D51, D52, D53, D56, D57, D58, D59, D61, D63, D66, D67, D68, D69.