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b. 207

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

No accidental in the sources (g1)

g1 specified by the editors

g1 as our alternative suggestion

..

The version written in the sources, in which the absence of cancellation of the  lowering g1 to g1 imposes to interpret the melodic sound in the last chord as a g1, must be considered to be potentially intended by Chopin. However, a possible oversight of a  is highly likely, as this kind of oversights belongs to the most common inaccuracies of Chopin's notation, whereas a diminished four-note chord – to his favourite chords.

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

issues: Omissions to cancel alteration , Errors of A

b. 207-208

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

Slurs in GC (→GE)

Slur in FE (→EE)

..

It is hard to determine how the difference in the slurring between FE and GC occurred. The new slur over bar 208 seems to be added, perhaps by Chopin, yet it could have been an ad hoc correction of a too short, or perhaps poorly visible, slur. In the main text we give the slur of FE, compatible with the prevailing phrasing. 

category imprint: Differences between sources

b. 208

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

..

FE1 (→FE2FE3) lacks in a  before the bottom most E1. Chopin corrected his oversight in GC (→GE), EE and FE4 also include the correct version.
In the proofreading of FE4, a cautionary  before e1 in the R.H. was also added. A similar addition was introduced in EE2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Cautionary accidentals , FE revisions , Authentic corrections in GC

b. 208

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

Slur before chord in GC (literal reading→GE)

Arpeggio sign in GC (contextual interpretation)

No sign in FE (→EE)

..

The curved line before the grace note and the chord, written in GC (→GE), means an arpeggio in this context. No sign in FE (→EE) is most probably an oversight of the engraver.

category imprint: Interpretations within context; Differences between sources

b. 208

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

..

FE1 (→FE2FE3) features an Aas the bottom note on the 2nd crotchet in the bar. This patent inaccuracy was corrected only in FE4. The remaining sources include the correct F1.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Terzverschreibung error , Authentic corrections of FE