Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


b. 8-9

composition: Op. 10 No 10, Etude in A♭ major

Slur ending in A

FE (→GE,EE)

..

The slur of FE (→GE,EE) is obviously erroneous – the engraver led the slur to the end of the line, as it is in A. At the same time, he did not pay attention to the difference in the text's division into great staves: in A the line ends with bar 8, while in FE – with bar 9.

category imprint: Differences between sources

issues: EE revisions , Errors in FE , GE revisions

b. 8

composition: Op. 10 No 10, Etude in A♭ major

e2 in A (→FE) (literal reading)

e2 in GE & EE

..

A lacking  before the penultimate quaver is most probably a mistake by Chopin. The accidental was added by the revisers in both GE and EE.

category imprint: Differences between sources

issues: EE revisions , Omissions to cancel alteration , GE revisions , Errors of A

b. 8

composition: Op. 10 No 4, Etude in C♯ minor

No fingering in AI & FE (→GE)

Fingering in EE

..

The fingering of EE is an addition by Fontana.

category imprint: Differences between sources

issues: EE revisions

b. 8

composition: Op. 10 No 4, Etude in C♯ minor

No marking in AI

 in FE (→GE,EE)

 suggested by the editors

..

According to us, the  combination, very rarely used by Chopin, is most probably an inaccurately reproduced   mark, which was used by Chopin on a number of occasions (e.g., in the autograph of the Etude in E major, No. 11, bars 17-25). Cf. bar 1.

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

issues: Inaccuracies in FE

b. 8

composition: Op. 10 No 3, Etude in E major

No fingering & slur in AI & FE (→GE)

No fingering in A (with slur)

Fingering written into FED

Fingering in EE

Our suggestion

..

In the main text we include the fingering added by Chopin in FED and the slur, embracing this group of semiquavers in A. In EE Fontana gave the identical fingering, marked in a more accurate manner.

category imprint: Differences between sources

issues: Annotations in teaching copies , EE revisions , Annotations in FED