D63 Queen’s Gambit Declined: Orthodox Defense, Main Line
D63 holds ten named lines, all under the name Queen’s Gambit. It leaves D60 (Queen’s Gambit Declined: Orthodox Defense) with 7.Rc1. Lines filed under D64, D65, D66 and D68 reach one of its named positions by a different move order. Of all other reference positions, the board of D54 (Queen’s Gambit Declined: Neo-Orthodox Variation) comes closest, four squares apart.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | e6 |
| 3 | Nf3 | d5 |
| 4 | Nc3 | Be7 |
| 5 | Bg5 | O-O |
| 6 | e3 | Nbd7 |
| 7 | Rc1 |
The move that completes D63
The reference line of D64 plays all of these moves and continues beyond them; D63 is the position reached at 7.Rc1.
- 7.Rc1 The rook goes from a1 to c1.
Lines filed under D63
They begin with two different first moves.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Queen’s Gambit Declined: Orthodox Defense, Main Line | 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 | 13 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Henneberger Variation | 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 a6 | 14 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Main Line | 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 c6 | 14 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Henneberger Variation | 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 a6 8.c5 | 15 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Swiss, Carlsbad Variation | 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 a6 8.cxd5 | 15 | White +1, Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Henneberger Variation | 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 a6 8.c5 c6 | 16 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Main Line | 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 Nbd7 6.Nf3 O-O 7.Rc1 h6 8.Bh4 c5 | 16 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Capablanca Variation | 1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 b6 8.cxd5 exd5 9.Bb5 | 17 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Henneberger Variation | 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 a6 8.c5 c6 9.Bd3 | 17 | Black castled |
| Queen’s Gambit Declined: Orthodox Defense, Pillsbury Variation | 1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 b6 8.cxd5 exd5 9.Bd3 | 17 | Black castled |
The road to D63
One of the eight named positions on the way are reached by a move order other than their own.
- 1.d4 … 5...O-Osix earlier stops: A40, A45, A50, D37, D53, E10
- 6.e3D55 Normal Line
- 6...Nbd7D60 Orthodox Defense
- 7.Rc1D63
The position after 7.Rc1
White has brought out the knight on c3, knight on f3 and bishop on g5; Black the knight on d7, knight on f6 and bishop on e7. Black could capture with dxc4. Black is to move and has 27 legal moves.
Codes that branch off from D63
The reference lines of two other codes leave D63 from the position after 7...c6, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| D64 | 8.Qc2 | Queen’s Gambit Declined: Orthodox Defense, Rubinstein Attack |
| D66 | 8.Bd3 | Queen’s Gambit Declined: Orthodox Defense, Bd3 Line |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| D55 | Queen’s Gambit Declined: Modern Variation, Normal Line | four squares: a1, c1, d7, b8 |
| D61 | Queen’s Gambit Declined: Orthodox Defense, Rubinstein Variation | four squares: a1, c1, d1, c2 |
| D67 | Queen’s Gambit Declined: Orthodox Defense, Capablanca System | six squares: f1, c4, d5, c6, f6, c7 |
| E51 | Nimzo-Indian Defense: Normal Variation, Ragozin Variation | seven squares: a1, c1, b4, g5, d7, e7, b8 |
| D62 | Queen’s Gambit Declined: Orthodox Defense, Rubinstein Variation, Flohr Line | eight squares: a1, c1, d1, c2, c4, c5, d5, c7 |
| D65 | Queen’s Gambit Declined: Orthodox Defense, Rubinstein Attack | eight squares: d1, c2, c4, d5, a6, c6, a7, c7 |
| E50 | Nimzo-Indian Defense | eight squares: a1, c1, b4, d5, g5, d7, e7, b8 |
Where lines continue from here
Seventeen named lines filed under other codes pass through the position after 7.Rc1. Besides the codes above, they belong to D65, D67, D68, D69.
Other move orders
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D64 Queen’s Gambit Declined: Orthodox Defense, Rubinstein Attack, whose order is 1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1.
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D65 Queen’s Gambit Declined: Orthodox Defense, Rubinstein Attack, whose order is 1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1.
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D66 Queen’s Gambit Declined: Orthodox Defense, Bd3 Line, whose order is 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1.
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D68 Queen’s Gambit Declined: Orthodox Defense, Classical Variation, whose order is 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1.
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D64 Queen’s Gambit Declined: Orthodox Defense, Rubinstein Attack, whose order is 1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 c6.
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D65 Queen’s Gambit Declined: Orthodox Defense, Rubinstein Attack, whose order is 1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 c6.
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D66 Queen’s Gambit Declined: Orthodox Defense, Bd3 Line, whose order is 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6.
- Queen’s Gambit Declined: Orthodox Defense, Main Line is also reached inside D68 Queen’s Gambit Declined: Orthodox Defense, Classical Variation, whose order is 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 c6.