The version of A and of the majority of the editions with g
2 as the 12th semiquaver must be erroneous – Chopin forgot to cancel the 
put to g2, the first note in the bar. This is evidenced by:
- g2 present in AsI; admittedly, there is no
in that version, yet it is not necessary, since the 1st semiquaver in the bar is written down as f
2, and not g2; - a natural added to this note in FE, probably by Chopin;
- g1 appearing twice on the 2nd beat of the bar in the L.H. – if Chopin wanted to have g2 in the R.H. in spite of this, he would not have hesitated to mark it clearly.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources; Corrections & alterations
issues: Errors resulting from corrections, Errors of A, Enharmonic corrections, Authentic corrections of FE
notation: Pitch