Issues : Inaccuracies in FE

b. 1

composition: Op. 25 No 10, Etude in B minor

in GC, EE & GE2 (→GE3)

in FE & GE1

..

The use of the  time signature is surprising only in GE1, as FE did not use the  indication in the Etudes – contrary to the manuscripts – even once, neither in Op. 25 nor in Op. 10 and in the Etude in F minor, Dbop. 36 No. 1 (cf. also the Impromptu in A major, Op. 29). Anyways, the correctness and authenticity of the  time signature is undeniable with respect to the compatible version of GC and EE.
The correct time signature returned in GE2 (→GE3).
Similarly in bar 104. 

category imprint: Differences between sources

issues: Changes of metre , Inaccuracies in GE , Inaccuracies in FE , GE revisions , 4/4 or 2/2

b. 58-60

composition: Op. 25 No 10, Etude in B minor

No slur in GC (→GE) & EE

Slur for lower voice in FE, contextual interpretation

..

The slur embracing the phrase in the middle voice was added by Chopin most probably in the proofreading of FE. The sign is, however, inaccurately placed – in bar 58, ending a line of the text, the slur begins on the stave, yet its continuation in bars 59-60 is under the stave, which hinders its interpretation. In the analogous place in bars 78-80, the slur is already clearly placed.

category imprint: Graphic ambiguousness; Differences between sources; Corrections & alterations

issues: Inaccuracies in FE , Authentic corrections of FE

b. 79-82

composition: Op. 25 No 10, Etude in B minor

No signs in GC (→GE) & EE

Pedalling in FE

Our suggestion

..

Omission of the pedalling signs in FE in bar 80 is certainly an oversight (cf. bars 31-32), therefore, in the main text we suggest to complete them after all previous analogous bars.

category imprint: Differences between sources; Corrections & alterations

issues: Inaccuracies in FE , Authentic corrections of FE , Omitted correction of an analogous place

b. 104

composition: Op. 25 No 10, Etude in B minor

in GC, EE & GE2 (→GE3)

in FE & GE1

..

Same as in bar 1, FE and GE1 give the non-authentic  time signature.

category imprint: Differences between sources

issues: Changes of metre , Inaccuracies in GE , Inaccuracies in FE , GE revisions , 4/4 or 2/2