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b. 28

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

..

In FE1 (→FE2) the top note of the last chord in the R.H. is a b1. It is certainly a mistake, corrected, perhaps by Chopin, in the proofreading of FE3 and base text to EE. The remaining sources also include the correct c2.

category imprint: Differences between sources

issues: Errors in FE , Authentic corrections of FE

b. 29

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

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In all sources, a cautionary  next to the g (L.H.) was added. We omit this superfluous accidental in the main text. 

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign

b. 32

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

d2-f2-b2 in EE

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The version of EE is most probably a mistake of the engraver, a so-called Terzverschreibung. FE, on which EE is based, features the correct chord: b1-d2-b2.

category imprint: Differences between sources

issues: Errors in EE , Terzverschreibung error

b. 36

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

..

In the main text, we add cautionary♭ before a2.

category imprint: Editorial revisions

b. 37

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

..

GC (→GE) has a cautionary  before the minim g2. The missing sign in FE (→EE) could be an oversight by the engraver. However, the sign is superfluous here and we do not include it in the main text.

category imprint: Differences between sources

issues: Inaccuracies in FE , Cautionary accidentals , Last key signature sign