Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


b. 226

composition: Op. 23, Ballade in G minor

e3-a3 in A (→FEGE)

c3-a3 in EE

..

The version of EE is a typical Terzverschreibung mistake, in this case probably additionally influenced by the sixths in the adjacent bars.

category imprint: Differences between sources

issues: Errors in EE , Terzverschreibung error

b. 228-229

composition: Op. 23, Ballade in G minor

..

The chromatic notation of A is inaccurate in a peculiar way – Chopin overlooked the  to the bottom note of the 1st octave in b. 228 (B1) and the accidentals to the bottom notes of the sixths on the 4th quaver in both bars (a2 and f2, respectively). It is also noteworthy that there is a cautionary  to f2, but not a quaver earlier to f1. FE added only a  to B1.
GE and EE added the remaining necessary accidentals to the version of FE, while GE also added cautionary naturals to f1 and f3. The former was also added by EE2 (→EE3), which results in a version adopted to the main text.
See also the notes in the next bar.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , GE revisions , FE revisions , Last key signature sign , Inaccuracies in A , Errors repeated in FE

b. 229

composition: Op. 23, Ballade in G minor

..

FE (→GE,EE) added an unobvious cautionary  to a in the 2nd crotchet. It suggests that it was Chopin who performed it, since a few other situations prove the composer's subconscious uncertainty as to the validity of a 3rd key signature , e.g. the mistake in b. 231.

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE

b. 229

composition: Op. 23, Ballade in G minor

..

EE1 (→EE2) overlooked the naturals to the octave on the 3rd crotchet. The mistake was corrected by EE3.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in EE

b. 230

composition: Op. 23, Ballade in G minor

..

In A Chopin overlooked the  to the bottom note of the 1st L.H. octave (F). The accidental was added by FE (→GE,EE). In the R.H. part A includes a cautionary accidental only to e1. In the main text we also add naturals to c1 and c2; they were also added by GE and, gradually, by EE – to c1 in EE2 (→EE3), only to c2 in EE3.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: EE revisions , Accidentals in different octaves , Cautionary accidentals , FE revisions , Inaccuracies in A