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. 6

composition: Op. 28 No. 13, Prelude in F♯ major

Pedalling in A (→FEEE)

No markings in FC (→GE)

..

The missing pedalling markings are one of a few oversights of the copyist in this Prelude.

category imprint: Differences between sources

issues: Errors of FC

b. 6

composition: Op. 28 No. 13, Prelude in F♯ major

..

The  restoring g in the 2nd half of the bar is absent in all the sources. It is one of Chopin's most common mistakes. The g note is so obvious that EE did not notice the mistake in spite of the cautionary  having been added before g1 in the 2nd R.H. chord.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Omissions to cancel alteration , Errors of A , Errors repeated in FE , Errors repeated in EE

b. 6-7

composition: Op. 28 No. 16, Prelude in B♭ minor

Fingering written into FESch

No teaching fingering

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FESch

b. 6-14

composition: Op. 28 No. 17, Prelude in A♭ major

Long accents in A

Short accents in FC (→GE) & FE (→EE)

..

In A all accents in b. 6, 8 and 14 are clearly long, which, however, was misunderstood both in FC (→GE) and FE (→EE).

category imprint: Differences between sources

issues: Long accents , Inaccuracies in FE , Inaccuracies in FC

b. 6

composition: Op. 28 No. 14, Prelude in E♭ minor

No accidentals (c-c1) in A (→FE,FCGE1)

Naturals (c-c1) in EE

Flats (c-c1) in GE2 (→GE3)

..

Before the R.H. penultimate quaver Chopin wrote in A a cautionary  which he crossed out after having checked it was not essential. This proves the intended pitch to be c-c1 here. Therefore, the EE version is arbitrary – the reviser repeated here his amendment from the previous bar where he added (rightly there) naturals rising c-c1 to c-c1. We add cautionary flats in the main text here as GE2 already has done.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , Errors in EE , GE revisions , Cautionary accidentals , Deletions in A