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b. 10

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

E-e in GC (→GE)

F-f in FE & EE

..

The E-e octave at the end of the bar in GC (→GE) is almost certainly the copyist's mistake, who inaccurately repeated the previous bar. In the version of FE and EE, adopted in the main text, Chopin smoothly changed the interval between the parts of both hands from octave to sixth, as part of the D minor chord, being the base of the 2nd half of the bar. 

category imprint: Differences between sources

issues: Errors of GC

b. 11

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

Two slurs in GC (→GE)

One slur in FE & EE

..

In the main text we give the separated slurs on the basis of the undeniable notation of GC (→GE). However, it cannot be excluded that Chopin combined the slurs in the base texts to FE and EE.

category imprint: Differences between sources

b. 11

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

..

In GC (→GE1), FE and EE there are no naturals returning B-b. This patent oversight was corrected in GE2 (→GE3).

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , GE revisions

b. 12-13

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

Two slurs in GC & GE2 (→GE3)

One slur in FE, EE & GE1

..

The inaccurately written slurs of GC are, however, according to us, separated. It cannot be excluded that it looked similarly in the base texts to FE and EE.

category imprint: Graphic ambiguousness; Differences between sources

issues: GE revisions , Inaccuracies in GC

b. 13

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

..

In GC and FE there are no sharps raising g2-g3 to g2-g3. The patent error was corrected in GE, EE also features the correct text.

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , Accidentals in different octaves , GE revisions , Errors of GC