A12 Réti Opening: Anglo-Slav Variation, Bogoljubow Variation
A12 holds 21 named lines, all under the name Réti Opening. It leaves A09 (Réti Opening) with 2...c6 3.b3. With 21 named lines it is the fifth-largest code of the 100 codes in volume A. Lines filed under A11 reach one of its named positions by a different move order.
| # | White | Black |
|---|---|---|
| 1 | Nf3 | d5 |
| 2 | c4 | c6 |
| 3 | b3 |
Moves only A12 plays
Same as A09 up to 2.c4, then:
- 2...c6 The c-pawn advances to c6, covering b5 and d5, opening a line for the queen on d8.
- 3.b3 The b-pawn advances to b3, covering a4 and c4, opening a line for the bishop on c1.
Lines filed under A12
They begin with two different first moves.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Réti Opening: Anglo-Slav Variation, Bogoljubow Variation | 1.Nf3 d5 2.c4 c6 3.b3 | 5 | |
| Réti Opening: Anglo-Slav Variation, Bogoljubow Variation | 1.Nf3 d5 2.c4 c6 3.b3 Bg4 | 6 | |
| Réti Opening: Anglo-Slav Variation, Bogoljubow Variation | 1.Nf3 d5 2.c4 c6 3.b3 Bf5 | 6 | |
| Réti Opening: Anglo-Slav Variation | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 | 7 | |
| Réti Opening: Anglo-Slav Variation, Bogoljubow Variation | 1.Nf3 d5 2.c4 c6 3.b3 Bf5 4.Bb2 | 7 | |
| Réti Opening: Anglo-Slav Variation, Bled Variation | 1.Nf3 d5 2.b3 Nf6 3.Bb2 g6 4.c4 c6 | 8 | |
| Réti Opening: Anglo-Slav Variation, Capablanca Variation | 1.c4 Nf6 2.Nf3 c6 3.b3 d5 4.Bb2 Bg4 | 8 | |
| Réti Opening: Anglo-Slav Variation, London Defensive System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bf5 | 8 | |
| Réti Opening: Anglo-Slav Variation, New York System | 1.Nf3 Nf6 2.c4 c6 3.b3 d5 4.Bb2 Bf5 | 8 | |
| Réti Opening: Anglo-Slav Variation, Torre System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bg4 | 8 | |
| Réti Opening: Anglo-Slav Variation, with dxc4 | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 dxc4 | 8 | Black +1 |
| Réti Opening: Anglo-Slav Variation, Capablanca Variation | 1.c4 Nf6 2.Nf3 c6 3.b3 d5 4.Bb2 Bg4 5.e3 | 9 | |
| Réti Opening: Anglo-Slav Variation, Capablanca Variation | 1.c4 Nf6 2.Nf3 c6 3.b3 d5 4.Bb2 Bg4 5.d3 | 9 | |
| Réti Opening: Anglo-Slav Variation, London Defensive System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bf5 5.Bg2 | 9 | |
| Réti Opening: Anglo-Slav Variation, London Defensive System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bf5 5.Bb2 | 9 | |
| Réti Opening: Anglo-Slav Variation, New York System | 1.Nf3 Nf6 2.c4 c6 3.b3 d5 4.Bb2 Bf5 5.e3 | 9 | |
| Réti Opening: Anglo-Slav Variation, New York System | 1.Nf3 Nf6 2.c4 c6 3.b3 d5 4.Bb2 Bf5 5.d3 | 9 | |
| Réti Opening: Anglo-Slav Variation, Torre System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bg4 5.Bg2 | 9 | |
| Réti Opening: Anglo-Slav Variation, Torre System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bg4 5.Bb2 | 9 | |
| Réti Opening: Anglo-Slav Variation, London Defensive System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bf5 5.Bg2 e6 6.Bb2 | 11 | |
| Réti Opening: Anglo-Slav Variation, Torre System | 1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bg4 5.Bg2 e6 6.Bb2 | 11 |
The road to A12
- 1.Nf3one earlier stop: A04
- 1...d5A06 Zukertort Opening
- 2.c4A09 Réti Opening
- 3.b3A12
The position after 3.b3
White has brought out the knight on f3; Black has not yet moved a knight or bishop. Black could capture with dxc4. Black is to move and has 30 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| D11 | Slav Defense: Modern Line | four squares: b2, d2, b3, d4 |
| A06 | Zukertort Opening | six squares: b2, c2, b3, c4, c6, c7 |
| A11 | English Opening: Caro-Kann Defensive System | six squares: g1, b2, b3, f3, d5, d7 |
| D10 | Slav Defense | six squares: g1, b2, d2, b3, f3, d4 |
| A01 | Nimzo-Larsen Attack | eight squares: g1, c2, f3, c4, d5, c6, c7, d7 |
| A04 | Zukertort Opening | eight squares: b2, c2, b3, c4, d5, c6, c7, d7 |
| A07 | King’s Indian Attack | eight squares: b2, c2, g2, b3, g3, c4, c6, c7 |
Other move orders
- Réti Opening: Anglo-Slav Variation is also reached inside A11 Réti Opening: Anglo-Slav Variation, with g3, whose order is 1.c4 c6 2.Nf3 d5 3.g3 Nf6 4.b3.