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b. 12-14

composition: (Op. 4), Sonata in C minor, Mvt IV

..

As in many other places, Chopin omitted accidentals to one of the notes of an octave if the pitch of the other one had already been defined. In this case, it concerns the top notes of both chords in bar 12 and the second chord in bar 14. The necessary accidentals were added in GE (→FE,EE,IE).
See also the adjacent note.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A

b. 12-14

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A there is a  to f2 in bar 12, which was added in pencil by a foreign hand. Similar accidentals are also in the L.H. part in bars 13-14, in which the omitted accidentals to the bottom octave notes were added (B1, B1, A, A1, A1), yet the top note of the last octave in bar 14 (a) was left without an accidental. It remains unclear who, when and why added them, as these additions include only a small fraction of the accidentals omitted by Chopin and added in GE, which rather rules out the natural assumption that it was the reviser of that edition. We do not consider these accidentals to be a part of A and do not reproduce them in the transcriptions of this source.

category imprint: Source & stylistic information

issues: Foreign hand additions in manuscripts

b. 12

composition: (Op. 4), Sonata in C minor, Mvt IV

in A

No sign in GE (→FE,EE,IE)

..

The missing  hairpin could be an oversight or a simplification of notation – the engraver of GE could have considered a third crescendo indication in this bar to be an unnecessary complication.

category imprint: Differences between sources

issues: Errors in GE

b. 13-14

composition: (Op. 4), Sonata in C minor, Mvt IV

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In A Chopin omitted the 5 necessary accidentals to the bottom octave notes, as well as the  to the top note of the last octave in bar 14 (a). All the accidentals were added in GE (→FE,EE,IE).
Similarly in b. 196-197.
Pencil annotations in a foreign hand – see b. 12-14.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A

b. 14

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In the main text we add a cautionary  to e3.

category imprint: Editorial revisions