D34 Tarrasch Defense: Prague Variation, Main Line
Also filed here: Queen’s Gambit.
D34 holds 13 named lines from two openings, most of them (12) under Tarrasch Defense. It leaves D33 (Tarrasch Defense: Prague Variation) with 7.Bg2 Be7. That final move, by the bishop, opens a line for the rook on h8. Of all other reference positions, the board of A38 (English Opening: Symmetrical Variation, Full Symmetry Line) comes closest, eight squares apart.
| # | White | Black |
|---|---|---|
| 1 | d4 | d5 |
| 2 | c4 | e6 |
| 3 | Nc3 | c5 |
| 4 | cxd5 | exd5 |
| 5 | Nf3 | Nc6 |
| 6 | g3 | Nf6 |
| 7 | Bg2 | Be7 |
Moves only D34 plays
Same as D33 up to 6.g3, then:
- 6...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.
- 7.Bg2 The bishop leaves f1 for g2, opening a line for the rook on h1, guarding the rook on h1.
- 7...Be7 The bishop leaves f8 for e7, opening a line for the rook on h8.
Lines filed under D34
All 13 share the start 1.d4 and then split two ways at Black’s move 1.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Tarrasch Defense: Prague Variation, Main Line | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 | 14 | |
| Tarrasch Defense: Classical Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O | 16 | both castled |
| Tarrasch Defense: Classical Variation, Carlsbad Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 | 17 | both castled |
| Tarrasch Defense: Classical Variation, Advance Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 c4 | 18 | both castled |
| Tarrasch Defense: Classical Variation, Classical Tarrasch Gambit | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.dxc5 d4 | 18 | White +1, both castled |
| Tarrasch Defense: Classical Variation, Endgame Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 Be6 | 18 | both castled |
| Tarrasch Defense: Classical Variation, Réti Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.dxc5 Bxc5 10.Na4 | 19 | both castled |
| Queen’s Gambit Declined: Tarrasch Defense, Stoltz Variation | 1...d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nc6 6.Bg2 Nf6 7.O-O Be7 8.Nc3 O-O 9.Bg5 Be6 10.Rc1 b6 | 20 | both castled |
| Tarrasch Defense: Classical Variation, Bogoljubow Variation | 1...Nf6 2.c4 e6 3.Nc3 c5 4.Nf3 d5 5.cxd5 exd5 6.g3 Nc6 7.Bg2 Be7 8.O-O O-O 9.Bg5 Be6 10.Rc1 c4 | 20 | both castled |
| Tarrasch Defense: Classical Variation, Petursson Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 cxd4 10.Nxd4 Re8 | 20 | both castled |
| Tarrasch Defense: Classical Variation, Main Line | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 | 22 | both castled |
| Tarrasch Defense: Classical Variation, Spassky Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Bg4 | 22 | both castled |
| Tarrasch Defense: Classical Variation, Chandler Variation | 1...d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.Rc1 Be6 | 24 | both castled |
The road to D34
- 1.d4 … 5...Nc6eight earlier stops: A40, D00, D06, D30, D31, D32
- 6.g3D33 Rubinstein System
- 6...Nf6D33 Prague Variation
- 7...Be7D34
The position after 7...Be7
White has brought out the knight on c3, knight on f3 and bishop on g2; Black the knight on c6, knight on f6 and bishop on e7. White has a half-open c-file; Black a half-open e-file. White could capture with Nxd5, dxc5. White is to move and has 38 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| E06 | Catalan Opening: Closed | eight squares: b1, c3, c4, c5, c6, e6, c7, b8 |
| D15 | Slav Defense: Three Knights Variation | nine squares: f1, g2, g3, c4, c5, c6, e7, b8 … |
| D40 | Queen’s Gambit Declined: Semi-Tarrasch Defense | nine squares: f1, g2, g3, c4, c6, e6, e7, b8 … |
| D41 | Queen’s Gambit Declined: Semi-Tarrasch Defense | nine squares: f1, g2, g3, d5, c6, e6, e7, b8 … |
| E05 | Catalan Opening: Open Defense, Classical Line | nine squares: b1, c3, c4, c5, d5, c6, e6, c7 … |
| A37 | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | ten squares: d2, c4, d4, d5, f6, g6, d7, e7 … |
| D13 | Slav Defense: Exchange Variation | ten squares: b1, f1, g2, c3, g3, c5, c6, e7 … |