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. 302

composition: Op. 2, Variations, complete

Sixth in AsI & A

f4 in GE (→FE,EE)

..

The absence of a3 in GE (→FEEE) almost certainly resulted from an oversight by the engraver of GE1.

category imprint: Differences between sources

issues: Errors in GE , Uncertain notes on ledger lines

b. 302

composition: Op. 2, Variations, complete

 after  in A

Long accent under f in GE (→FE1FE2)

Short accent in EE & FESB

..

The short  mark may be considered an accent associated with the initial  or as a diminuendo hairpin, which, in this context, practically does not influence the meaning of this mark. On the other hand, placing it under the 1st f semiquaver, as it was performed in GE (→FE,EE), must be contrary to the notation of A and Chopin's intention. The differences in the length of the mark in individual editions most probably correspond to the different interpretations of the engravers: the ones who considered it an accent, inserted a short accent (EE and FESB), while diminuendo took the form of a long accent, which is present in GE (→FE1FE2).

category imprint: Differences between sources

issues: Long accents , Inaccuracies in GE , Inaccuracies in FE , EE inaccuracies

b. 303

composition: Op. 39, Scherzo in C♯ minor

 in EE

..

The asterisk  is placed differently in different sources. We take the version of EE  as it is consistent with the notation of most analogous places and blends naturally with the notation of the rhythm. 

category imprint: Differences between sources

issues: Inaccuracies in GE

b. 303-304

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

Whole-bar slur in A

Motivic slur in GE1 (→FE)

Motivic slurs in both hands in EE & GE2

..

The slur of A is probably the original version – cf. bars 301-302. Therefore, the longer slur in GE (→FEEE) may be a result of Chopin's proofreading.
The slurs in the L.H. added in EE and GE2 are inauthentic – see bars 297-298.

category imprint: Differences between sources

issues: EE revisions , GE revisions , Authentic corrections of GE

b. 303

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

No sign in A (→GEFE)

 in EE

..

The  hairpin must be an arbitrary addition of the reviser of EE who tried to unify the notation of all identical bars in this fragment.

category imprint: Differences between sources

issues: EE revisions