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. 4

composition: Op. 10 No 9, Etude in F minor

Fingering written into FED

No teaching fingering

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED

b. 4

composition: Op. 10 No 9, Etude in F minor

No marking in AI & FE (→GE,EE)

 in A

Our variant suggestion

..

Omission of  in FE (→GE,EE) is rather a result of the engraver's distraction than Chopin's proofreading. The composer, who in two other places in the Etude – in bar 48 and 56 – added  when proofreading FE, could have accepted the lack of this indication. Therefore, we suggest a variant solution. 

category imprint: Differences between sources

issues: Errors in FE

b. 4

composition: Op. 10 No 8, Etude in F major

No mark in A (→FEEE)

Wedge in GE

..

In GE the note was provided with a wedge, probably by analogy to bar 2.

category imprint: Differences between sources

issues: GE revisions

b. 4-6

composition: Op. 10 No 8, Etude in F major

Fingering in A

FE (→GE)

..

In the main text we give the fingering of the L.H., written by Chopin in A. In FE (→GE) the '3' digit was overlooked in bar 5, which is almost certainly an oversight. In EE Fontana completed the fingering at the beginning of bar 5, adding digits for each note. EE3 erroneously features '2' as the 1st digit in bar 4 (it may be a mistake related to the transcription of the "continental" fingering system to the "British" one – cf. General Editorial Principlesp. 10).

category imprint: Differences between sources

issues: EE revisions , Inaccuracies in FE , Errors in EE

b. 4-8

composition: Op. 10 No 8, Etude in F major

Fingering in A

FE (→GE)

..

Two digits written in A in bar 4 are generally enough to decipher Chopin's fingering in bars 1-8. While proofreading FE (→GE,EE), Chopin completed the hints so that each of the finger arrangements used in these bars included the written out precise fingering at least once. We give this fingering in the main text. In EE, Fontana additionally expanded the indications drawn from FE

category imprint: Differences between sources

issues: EE revisions , Authentic corrections of FE