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b. 142

composition: Op. 22, Polonaise

..

There are no accidentals before the 4th and 8th semiquavers in FE (→EE,GE). The natural put before c4, the last note in the bar, proves that Chopin considered the  from before the 1st quaver of the bar to be valid up until this place, thus regarding the aforementioned notes as c2 and c3 (cf. a similar situation in b. 144). In accordance with the contemporary rules of chromatic orthography, we provide the discussed notes with sharps.

category imprint: Interpretations within context

issues: Accidentals in different octaves , Cautionary accidentals

b. 142

composition: Op. 22, Polonaise

Mordent in FE

No ornament in GE & EE

..

The absence of a mordent both in EE and GE suggests that we are dealing with an oversight of the engraver of FE, which made its way to these editions; however, in FE it was corrected in the last stage of proofreading. In the main text we add an accidental – often omitted by Chopin in such situations – specifying the pitch of the mordent's top note. 

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Accidentals in different octaves , Inaccuracies in FE , Authentic corrections of FE

b. 142-144

composition: Op. 22, Polonaise

No marks in FE (→GE)

Accents in EE

..

Propagating the accent from b. 145 to the three previous seemingly similar situations is an arbitrary revision of EE, disregarding the harmonic context. See also b. 134-137.

category imprint: Differences between sources

issues: EE revisions

b. 142-145

composition: Op. 50 No. 3, Mazurka in C♯ minor

No indication in AF (→FEEE)

cresc. in GE

..

The cresc. indications in b. 142 and 145 most probably come from [AG] (→GE). One could assume that in the autograph the indications were overlaid on a hairpin –  – a combination Chopin would willingly use.

category imprint: Differences between sources

b. 142-144

composition: Op. 44, Polonaise in F♯ minor

No markings in GE

Pedalling in FE (→EE)

..

The pedal markings of FE (→EE) in b. 142 and 144, whose authenticity cannot be denied, were most probably entered by Chopin into the basis for FE. It is indicated by the trace of correction visible in analogous b. 162 where the  sign was moved one beat earlier in print – its initial misplacement was probably due to misinterpretation of the manuscript.
In the main text we place the second  sign analogously to the first. In FE it is clearly printed too far.
Similarly complemented pedalling can also be seen in FE (→EE) in bars 201-204 and 221-223.

category imprint: Differences between sources

issues: Inaccuracies in FE