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


Pitch

b. 77

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

..

In the main text, we add a cautionary  before a in L.H.

category imprint: Editorial revisions

b. 78

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

Minim b1 in FE1

Minim c2 in GC (→GE)

Crotchet a1-c2 in FE2 (→EE1,FE3FE4)

Minim a1-c2 in EE2

..

Among the four versions of the middle notes of the chord at the beginning of the 2nd half of the bar present in the sources, the first (FE1) is certainly erroneous, whereas the last (EE2) – arbitrary. In turn, the remaining two are undoubtedly authentic and – according to us – equal. The a1-ccrotchet is probably earlier, it was probably in [A] and this is on this basis that is was introduced to FE2 instead of the erroneous bminim. The original third was initially also in GC, where, however, Chopin changed it to a cminim. Hence, we adopt the latter to the main text.

category imprint: Differences between sources; Corrections & alterations

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

b. 79

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

..

In [A] (→GC,FEEE1) in the 2nd half of the bar there were no accidentals, which gives g in the L.H. and g1(2) in the R.H. Chopin's mistake was corrected in GE (partially – only a  before g2 in the 4th crotchet) and in EE2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Omissions to cancel alteration , GE revisions , Last key signature sign

b. 79

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

..

In the main text, we add a cautionary  before d2 in R.H.

category imprint: Editorial revisions

b. 80

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

e1 in GC (→GE) & FE2 (→EE,FE3FE4)

d1 in FE1

..

The d1 note in the chord at the beginning of the bar is certainly a mistake of the engraver of FE1, corrected in the subsequent FE.

category imprint: Differences between sources

issues: Errors in FE , FE revisions