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b. 261-262

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

..

In the L.H. part EE1 overlooked both flats to d2 in these bars. The mistakes were corrected in EE2.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in EE

b. 262

composition: Op. 43, Tarantella

 
 
..

In GE there is no slur over the first and second beat of the LH part.

category imprint: Differences between sources

issues: Inaccuracies in GE

b. 262-264

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

4 accents in A & GE2

3 accents in GE1

3 accents in FE

3 accents in EE

..

In bars 252 and 264, A features clear accents on the second and penultimate quavers; such an accentuation scheme is repeated twice more in analogous bars. Therefore, omission of the 1st accent in bar 264 in GE1 (→FEEE) must be a mistake. The accents in FE are placed inaccurately, hence in EE they were put a quaver earlier, on the 1st and 7th notes of the bar, which is a mistake.

category imprint: Differences between sources

issues: Inaccuracies in FE , Errors in GE , EE inaccuracies

b. 262

composition: Op. 16, Rondo in E♭ major

Staccato dot in FE (→GE) & EE3

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In EE1 (→EE2), the engraver overlooked the staccato dot over a2. The mark was added by the reviser of EE3.

category imprint: Differences between sources

issues: EE revisions , EE inaccuracies

b. 262

composition: Op. 11, Concerto in E minor, Mvt III

..

FE is missing a natural before the penultimate note in the bar; however, the accidental is present before the previous semiquaver, d3. Therefore, it can be likely that the engraver put an accidental before the wrong note, although Chopin would also occasionally write accidentals in such an illogical manner. In GE, the  was moved to before c3, whereas EE added the necessary ​​​​​​​ without removing the one from before d3

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Inaccuracies in FE , GE revisions , Cautionary accidentals