Positions reached by different routes For instance, the first position can be obtained from the
Queen's Gambit: :
1. d4 d5 :
2. c4 e6 :
3. Nc3 Nf6 But this position can also be reached from the
English Opening: :
1. c4 e6 :
2. Nc3 Nf6 :
3. d4 d5 so the English Opening has transposed into the Queen's Gambit. The second position shows another example. The position can arise from the
French Defence: :
1. e4 e6 :
2. d4 d5 :
3. exd5 exd5 :
4. Nf3 Nf6 The identical position can also be reached, with two extra moves played by each side, from the
Petrov Defense: :
1. e4 e5 :
2. Nf3 Nf6 :
3. Nxe5 d6 :
4. Nf3 Nxe4 :
5. d3 Nf6 :
6. d4 d5 This third position shows another example. This position can be reached from the Exchange variation of the
Queen's Gambit Declined: :
1. d4 d5 :
2. c4 e6 :
3. Nc3 Nf6 :
4. cxd5 exd5 :
5. Bg5 Bb4 :
6. Qc2 h6 The identical position can also be reached from the Classical variation of the
Nimzo-Indian Defence: :
1. d4 Nf6 :
2. c4 e6 :
3. Nc3 Bb4 :
4. Qc2 d5 :
5. cxd5 exd5 :
6. Bg5 h6 Transposition possibilities of some openings Some openings are noted for their wide range of possible transpositions, for example the
Catalan Opening and
Sicilian Defence. For a simple example, the opening moves 1.d4 e6 (the
Horwitz Defence) can transpose very quickly into a wide range of openings, including: ==References==