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Rhythm

b. 61

composition: (Op. 4), Sonata in C minor, Mvt IV

e2 tied in A (→GEEE,IE)

e2 repeated in FE

e2 tied, our alternative suggestion

..

The missing tie to e2 is most probably due to a mistake by the engraver of FE – see the note above.
As in bar 57, in our alternative suggestion concerning the rhythmic notation of the main text, we use the notation Chopin applied in analogous bar 258 and 262, which is more legible. 

category imprint: Differences between sources; Editorial revisions

issues: Errors in FE

b. 85-89

composition: (Op. 4), Sonata in C minor, Mvt IV

B in L.H. & R.H. in A

B in L.H. only in GE (→FE,EE,IE)

..

In the main text we keep the notation of the last chord in bar 85 and 89 used in A, in which the B note belongs – at least according to the notation – to the parts of both hands. The simplified notation introduced by GE (→FE,EE,IE) corresponds to the actual performance, but it obliterates the sequence of the R.H. bottom voice, which Chopin apparently wanted to show precisely.
Similarly, in bar 97 and 101.

category imprint: Differences between sources

issues: GE revisions

b. 87

composition: (Op. 4), Sonata in C minor, Mvt IV

Two-part notation in A

One-part notation in GE (→FE,EE,IE)

..

According to us, the short stem of the g minim does not reach the b minim, written above it, on purpose, as it is provided with a separate stem. This means that Chopin saw them as parts of two different voices. This subtlety was not reproduced in the editions.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccuracies in GE , Inaccuracies in A

b. 91

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A the g note is a semibreve, which is a patent mistake, perhaps under the influence of the notation in the previous bar. The correct rhythmic value intended by Chopin (minim) was introduced already by GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

issues: GE revisions , Rhythmic errors , Errors of A

b. 92

composition: (Op. 4), Sonata in C minor, Mvt IV

Semibreve d1 in A (→GEEE)

Minim in FE & IE

..

The d1 minim in FE and IE most probably resulted from the awkward GE notation, in which the noteheads of the minims and the semibreves are identical.

category imprint: Differences between sources

issues: Errors in FE , Errors in IE