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. 149-150

composition: Op. 21, Concerto in F minor, Mvt I

4 slurs in A & GE2

1 slur in GE1FE)

No slurs in EE

..

Four little slurs written in A from the grace notes to the opposite notes of the octaves emphasise the expressive character of the octave mini-motifs. The detail was fully reproduced only in GE2 – in the previous editions the majority of the little slurs was overlooked (in EE all of them).

category imprint: Differences between sources

issues: Errors in EE , Errors in GE , GE revisions

b. 149

composition: Op. 11, Concerto in E minor, Mvt I

..

In FE (→GE1), the last 8 notes are written as 2 groups of semiquavers. The division into groups suggests that Chopin meant a strict and regular division, so the notes should be demisemiquavers. A respective change was introduced in EE and GE2 (→GE3). Additional beams were added also in FEJ, although it is impossible to confirm the authenticity of such a non-characteristic entry. 

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , EE revisions , Errors in FE , GE revisions , Rhythmic errors , Annotations in FEJ , Errors repeated in GE

b. 149

composition: Op. 11, Concerto in E minor, Mvt I

No fingering in FE (→GE)

Fingering in EE

..

Fontana's fingering, natural in this context, is probably compliant with the one foreseen by Chopin – cf. a Chopinesque indication in a similar passage in bar 141. 

category imprint: Differences between sources

issues: EE revisions

b. 149

composition: Op. 11, Concerto in E minor, Mvt I

..

In FE, there is no  raising d1 to d1, which must be considered an inaccuracy, since dpreviously appeared only on the bottom stave. The mark was added in GE and EE, whereas in the latter, a  was repeated also before d2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Inaccuracies in FE , GE revisions , Omission of current key accidentals

b. 149

composition: Op. 22, Polonaise

..

There is no  lowering G to G at the beginning of the bar in FE (→EE1). This mistake, if committed by Chopin, would prove his anticipatory thinking – modulation to the key of B minor/G major was already determined in the previous bar, hence the use of G could have already been considered obvious (in FE the spaces between the notes suggest that the  before g and maybe even all 3 L.H. flats were added at the time of proofreading). The accidental was added in the remaining editions. 

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Omission of current key accidentals , Errors repeated in EE