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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. 11

composition: Op. 25 No 12, Etude in C minor

..

FE has an f1 instead of a1 as the 8th semiquaver in the L.H. The engraver's error is proved by the compatible version of the remaining sources, the version of analogous bar 3 and a correction written in pencil in FES

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , Errors in FE , Terzverschreibung error , Annotations in FES

b. 11-12

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

No marks in GC (→GE)

Long accents in FE

Short accents in EE

..

No accents in GC (→GE) is almost certainly an oversight of the copyist, who overlooked all signs between the staves in bars 7-13. The short accents in EE are certainly a result of the standard interpretation of the notation of FE.

category imprint: Interpretations within context; Differences between sources

issues: Long accents , EE inaccuracies , Errors of GC

b. 11-12

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

 in GC (→GE), FE & EE2

No signs in EE1

..

The absence of  signs is probably an oversight of the engraver of EE1, although a possibility of their removal by Chopin in the base text to this edition also cannot be excluded.

category imprint: Differences between sources

issues: EE revisions , Errors in EE

b. 11-13

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

Pedalling in bar 11 in GC (literal reading)

Pedalling in bars 11-13 in GC (possible interpretation) & FE (→EE)

No markings in GE1 (→GE2mar)

Pedalling in bars 11-12 in GC (contextual interpretation) & GE2

..

The used by Chopin in [A] (→GC) abbreviated notation of bars 12-13 (both in the part of the L.H., only the first one in the part of the R.H.) raises doubts concerning the pedalling issues. According to us, it seems to be most justified to adopt that the indications are to be in bars 11-12, but not in bar 13.

category imprint: Interpretations within context; Differences between sources

issues: Errors in GE , GE revisions