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b. 67

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

 in A (→GEEE,IE)

in FE

Our variant suggestion

..

The comparison with the pianistically analogous passages in bar 65 and 69 suggests that Chopin could have committed a mistake in positioning the  mark in A. Taking into account this possibility, in the main text we suggest a variant solution in which we put the A mark (being the authentic one) in brackets, while the one added by us by analogy with the adjacent passages – in square brackets.
The FE version is most probably an inaccuracy – the reviser would have moved the mark to the end of the bar. 

category imprint: Differences between sources; Editorial revisions

issues: Inaccuracies in FE , Errors of A

b. 67

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

..

In A there is no accidental to the 6th quaver in the bar. The patent inaccuracy was corrected in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A

b. 67

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

Accent in A

No mark in GE (→FE,EE,IE)

..

The lack of accent is probably an oversight of the engraver of GE (→FE,EE,IE).

category imprint: Differences between sources

issues: Errors in GE

b. 71

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

No slur in A

Slur in GE (→FE,EE,IE)

Slur suggested by the editors

..

There is no doubt that the first part of the passage is to be performed legato, hence in the main text we suggest adding a slur. It was already added in GE (→FE,EE,IE).

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 71

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

in A

Longer  in GE (→FE,IE) & EE2

No sign in EE1

..

In this case, the extension of the  hairpin can be considered justified both musically (cf. the previous passages) and graphically – Chopin could have shortened the mark in A for it not to intersect the other elements of notation. Therefore, the version of the editions can be considered an acceptable variant.

category imprint: Differences between sources

issues: Scope of dynamic hairpins , GE revisions