Issues : Authentic corrections of FE

b. 57

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

f1 in GC (→GE), FE3 (→FE4), EE & FESch

a1 in FE1 (→FE2)

..

The version of FE1 (→FE2) is certainly erroneous, which is proved by Chopin proofreading in FE3 (→FE4) and FESch. The correct version of EE can also be a result of Chopin's correcting the base text to this edition.

category imprint: Differences between sources

issues: Annotations in teaching copies , Errors in FE , Authentic corrections of FE , Annotations in FESch

b. 59-63

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

in GC (→GE) & FE1 (→FE2)

e in FE3 (→FE4), EE & FESch

..

The note present at the beginning of bars 59 and 63 in GC (→GE) and FE1 (→FE2) is the original version of the bass in these bars. Chopin changed them to e in the proofreading of FE3 (→FE4), in the base text to EE and FESch. In the corresponding bar of the recapitulation (bar 187), the fifth as the base of chord is present accordingly in all sources. 

category imprint: Differences between sources; Corrections & alterations

issues: Annotations in teaching copies , Authentic corrections of FE , Authentic corrections of EE , Annotations in FESch

b. 61

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

d in GC (→GE) & FE1 (→FE2EE)

D in FE3 (→FE4)

..

The version of FE3 (→FE4) is a certain Chopin improvement, in accordance with the version of this bar in the recapitulation (bar 189).

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE

b. 76

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

GC (→GE)

FE1 (→FE2)

..

According to us, the first half of the bar has only one authentic version, written in [A] and conveyed by EE and FESch. The versions of GC and FE1, hence sources based on [A], were probably a result of its misinterpretation by the copyist and the engraver of FE. Chopin restored the correct text, by amending the mistake in FE2 and FESch and – most probably – in the base text to EE. The versions of FE3 and FE4 are most probably a result of mistakes at the time of proofreading FE2 and FE3 respectively. 

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues: Errors in FE , Authentic corrections of FE , Errors of GC

b. 85

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

No marking in GC (→GE) & FE1 (→FE2EE1)

in FE3 (→FE4) & EE2

..

 was added in FE3 (→FE4) almost certainly by Chopin, which was adopted in EE2. Similarly in analogous bar 213.

category imprint: Differences between sources; Corrections & alterations

issues: EE revisions , Authentic corrections of FE