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b. 40

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

e1 in chord in GC (→GE) & FE3 (→FE4)

d1 in chord in FE1 (→FE2EE)

..

The version of FE1 (→FE2EE) – with d1 – is almost certainly erroneous, as in the proofreading of FE3 (→FE4) Chopin returned the version with e1, written in GC (→GE).

category imprint: Differences between sources

issues: Errors in FE , Authentic corrections of FE

b. 40-41

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

No accidentals in GC & FE1 (→FE2EE1)

Naturals in GE, FE3 (→FE4) & EE2

..

The absence of accidentals on the 2nd and 3rd beat of bar 40 and 2nd beat of bar 41 in GC and FE1 (→FE2EE1) is almost certainly Chopin's mistake. It is confirmed by naturals raising g1 to g1 in bar 40 and g to g in bar 41, added in the most probably authentic proofreading of FE3 (completed with the last missing  in FE4). Similarly in bars 228-229.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors in EE , GE revisions , Authentic corrections of FE , FE revisions , Errors of GC

b. 40

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

Octave in GC (→GE) & FE

Chord with b2 in EE

..

The version of EE can be authentic; it should have been then considered to be a Chopin improvement. A possibility of Chopin intervention in this place is, however, reduced by the fact of leaving the mistakes in the part of the L.H. without correction – no naturals raising g(1) to g(1) and d1 instead of e1 in the last chord. Therefore, we are probably dealing with a revision or mistake.

category imprint: Differences between sources

issues: EE revisions , Authentic corrections of EE

b. 42-43

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

..

The natural before the 5th quaver in the L.H. in bar 42 (c1) was added only in GE2. There is no natural before the 1st quaver in bar 43 (d1) in FE (→EE1); Chopin added it in GC (→GE), which was repeated in EE2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors in EE , GE revisions , Authentic corrections in GC

b. 44

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

..

In GC and FE (→EE1) there is no  before the top most note of the 3rd crotchet in the R.H. The patent inaccuracy was corrected in GE and EE2. In all sources, the  before g1 in the L.H. was unnecessarily repeated. 

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Inaccuracies in FE , GE revisions , Cautionary accidentals , EE inaccuracies , Inaccuracies in GC