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b. 286

composition: Op. 16, Rondo in E♭ major

..

We add a cautionary ​​​​​​​ before g in the main text.

category imprint: Editorial revisions

b. 286

composition: Op. 44, Polonaise in F♯ minor

Arpeggio in GE, FE & EE2 (→EE3)

No mark in EE1

..

The absence of the mark in EE1 is most probably an oversight of the engraver, corrected in EE2 (→EE3).

category imprint: Differences between sources

issues: EE revisions , Errors in EE

b. 287

composition: Op. 39, Scherzo in C♯ minor

Short accent in EE, and possibly in GC

Long accent in FE & GE, and also probably in GC

..

The accent form intended by Chopin is hard to determine: it is rather short in EE and rather long in FE and GE. The accent in GC can be interpreted both ways. 

category imprint: Graphic ambiguousness; Differences between sources

issues: Long accents

b. 287

composition: Op. 42, Waltz in A♭ major

No sign in FEG (→GE)

 in FE

 in EE

..

In EE the pedal release mark was placed slightly earlier, after the 1st crotchet. To the main text we adopt the notation of FE, where the sign was placed after the last rest. The lack of sign in FEG, though not infrequent at the end of Chopin's works, in this case should be regarded as an imprecision.

category imprint: Differences between sources

issues: Authentic corrections of FE , Authentic corrections of EE

b. 287

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

..

Same as in analogous bar 139, in A Chopin overlooked the  returning a1, which remained unnoticed in all editions.

category imprint: Interpretations within context; Editorial revisions

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