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b. 14

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

..

FE and EE have no sharps returning f2 and f at the beginning of the 2nd half of the bar. This patent oversight was corrected by Chopin in GC (→GE), when he added the necessary signs.

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

issues: Omissions to cancel alteration , Authentic corrections in GC

b. 18

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

..

In GC and EE1 (→EE2) there is no  returning c in the last chord in the L.H. The sign was added in GE and EE3, and probably also in the proofreading of FE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Omissions to cancel alteration , GE revisions , EE inaccuracies , Authentic corrections of FE , Inaccuracies in GC

b. 23

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

..

In GC and EE1 there is no  lowering F to F in the 1st chord in the bar. This patent inaccuracy was corrected in GE and EE2 (→EE3). FE also includes the correct text.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , GE revisions , EE inaccuracies , Inaccuracies in GC

b. 25

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

g-f1 in GC

f-f1 in FE, EE & GE2 (→GE3)

g-g1 in GE1

..

The seventh in GC is certainly erroneous, however, without comparing it to other sources, it is unclear whether the mistake concerns the bottom or top note. It is proved by the way the place was revised in GE1. In the main text we give the undoubtedly correct text of FE, EE and GE2 (→GE3).

We add cautionary sharps before F1-F and f-f1.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Errors in GE , GE revisions , Errors of GC

b. 26

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

E in GC, FE, EE1 (→EE2) & GE2 (→GE3)

E in GE1 & EE3

..

In GC, FE and EE there are no accidentals before the 9th quaver, so it is not entirely clear whether it is to be read as e-e1-e2-e3 or e-e1-e2-e3. The comparison with the previous bar indicates a typical for Chopin oversight of naturals returning e and e2. GE1, however, added the  raising e3 to e3, which is certainly a mistake (yet it was repeated in EE3). The correctly written text is featured only in GE2 (→GE3).

In EE1 the top note of the part of the R.H. is mistakenly written as d3

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , Errors in EE , Omissions to cancel alteration , Errors in GE , GE revisions , Errors of GC