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b. 91

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

No f2 in chord in FE1

f2 in GC (→GE) & FE2 (→EE,FE3FE4)

..

The absence of f2 in the 1st chord is certainly one of numerous mistakes of FE1.

category imprint: Differences between sources

issues: Errors in FE , FE revisions

b. 92

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

f2-d3 in GC (→GE) & FE3 (→FE4)

f2-f3 in FE1 (→FE2EE)

..

The version of FE1 (→FE2EE) is certainly erroneous – it is proved both by the text of GC (→GE) and the proofreading of FE3 (→FE4). At the same time, it is only FE4 that includes a completely correct text, as FE3 overlooked the  before the corrected note.

category imprint: Differences between sources

issues: Errors in FE , Terzverschreibung error , Errors in the number of ledger lines , Authentic corrections of FE

b. 92

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

..

In all sources, there is a cautionary  before f2. In the main text we omit this sign, which is unnecessary in this context. 

category imprint: Editorial revisions

issues: Cautionary accidentals

b. 93

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

..

At the beginning of the bar GC has a C1-E tenth. It is certainly a mistake, which is proved by, among others, the  before the bottom note, which does not make any sense before C1. All the remaining sources include an E1-E octave.

category imprint: Interpretations within context; Differences between sources

issues: Terzverschreibung error , GE revisions , Errors in the number of ledger lines , Errors of GC

b. 94

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

..

We add cautionary flats before the 2nd octave. The signs were already added in GE and EE2.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions