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b. 19-20

composition: Op. 35, Sonata in B♭ minor, Mvt III

a1 & f1 in chords in GC (→GE1) & FE (→EE1)

a1 (+ cautionary ) & f1 in GE2mar (→GE2) & EE2

No a1 & f1 in chords in FES

..

The deletions of the top notes of the chords were written in FES most probably by Chopin or on the basis of his indications. It is most probably a facilitation for pianists with small hands, intended to be used at amateur performances. Due to this fact, we do not include this version in the main text. Similar entries are in bars 73-74 and 81-82.

In bar 19 in GE2mar (→GE2) and EE2 a cautionary  before the first a1 was added – cf. the note below.

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FES

b. 19

composition: Op. 35, Sonata in B♭ minor, Mvt III

..

In the main text we add cautionary flats before ga and a1. A similar supplement was introduced in GE2mar (→GE) and EE2 ( before g was added already in GE1).

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions

b. 20

composition: Op. 35, Sonata in B♭ minor, Mvt III

..

The correct notation of the trill in the 1st half of this bar and all its repetitions – bars 28, 74 and 82 – appeared in the sources (not including pupil's copies) only several years after the publication of the Sonata, in EE2 and GE2. The mistake was committed by Chopin, who in [A] (→GCGE1GE2mar,→FE1FE2EE2) wrote the trill minim as a G (with a cautionary ). The error was noticed in the proofreading of FE3 (→FE4,FE5), however, at the time of performing the correction, another mistake was committed, by moving the note mechanically together with the preceding it flat, which resulted in an F. The correct text was marked in all pupil's copies.
A similar mistake, consisting in writing the top second of the main note of the trill instead of the main one, from which the trill starts in this context, is to be find also in, e.g., the Bolero in A minor, Op. 19, bar 187.

In EE there is also no wavy line after the trill.

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues: Annotations in teaching copies , EE revisions , Errors in FE , Annotations in FED , Errors in EE , Errors resulting from corrections , Errors in GE , GE revisions , EE inaccuracies , Errors of A , Annotations in FES , Authentic corrections of FE , Errors of GC

b. 24

composition: Op. 35, Sonata in B♭ minor, Mvt III

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In [A] (→GC,FE) Chopin overlooked the bass clef. The sign was added in GE and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , GE revisions

b. 26

composition: Op. 35, Sonata in B♭ minor, Mvt III

..

Same as in bar 18, in GC (→GE1) and FE there is no  raising g2 to g2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors in GE , GE revisions , Omission of current key accidentals