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b. 29

composition: Op. 26 No 1, Polonaise in C♯ minor

A-B in A, FE2 (→EE) & GE5

A-B suggested by the editors

A-B in FE1

A-B in GE1 (→GE2)

A-H in GE3 (→GE4)

..

The oversight of  in FE1 (→EE) next to the second grace note could have been caused by the unclear notation of A – due to the cramped notation of grace notes (probably added later)  is almost illegible. The correct version was returned in FE2 (→EE), most probably as a result of Chopin's correction. In GE1 (→GE2) the clearly erroneous version of FE1 was revised, by changing the 1st grace note to A. Another revision was performed in GE3 (→GE4), by deleting the  next to the 1st grace note. The correct text was introduced only in GE5, probably after comparison with FE2.

In the main text we remove the unnecessary  next to the minim, most probably being a trace of the original version without the grace notes beginning the trill.   

category imprint: Graphic ambiguousness; Differences between sources; Corrections & alterations

issues: Errors in FE , Errors in EE , Errors in GE , Authentic corrections of FE , Inaccuracies in A

b. 31-32

composition: Op. 26 No 1, Polonaise in C♯ minor

Slur in A (contextual interpretation) & GE2 (→GE3GE4GE5)

Slur in FE (→GE1,EE)

..

In FE (→GE1,EE) the slur ends on the last note in bar 31. In similar bars 5-7, the slur is led to the 1st note of bar 7, which ends the phrase. A possible reason of the slur's shortening in the editions is the inaccuracy of notation of A, in which Chopin ended the slur just before the bar line between bars 31 and 32.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccuracies in FE , Inaccurate slurs in A , EE inaccuracies

b. 34

composition: Op. 26 No 1, Polonaise in C♯ minor

..

Same as in bars 5 and 9, in A there is no  returning b.

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , Errors of A , Authentic corrections of FE

b. 36-37

composition: Op. 26 No 1, Polonaise in C♯ minor

..

In bar 36 in A there are no accidentals, which is certainly Chopin's mistake – cf. analogous bar 11. The necessary accidentals were added in the proofreading of FE (→GE,EE), together with the cautionary sharps in bar 37. 

category imprint: Interpretations within context; Differences between sources

issues: Cautionary accidentals , Omission of current key accidentals , Errors of A , Authentic corrections of FE

b. 39

composition: Op. 26 No 1, Polonaise in C♯ minor

..

In A Chopin undoubtedly overlooked the  raising g1 to g1 in the written grupetto. He did not correct the mistake in the proofreadings of FE either. The necessary sign was added only by the revisers of GE2 (→GE3GE4GE5) & EE2.

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues: Errors in FE , Errors in EE , Errors in GE , GE revisions , Errors of A , Last key signature sign