Op. 2, Variations in B♭ major
Op. 10, 12 Etudes
Op. 11, Concerto in E minor
Op. 21, Concerto in F minor
Op. 22, Polonaise in E♭ major
Op. 24, 4 Mazurkas
Op. 25, 12 Etudes
Op. 26, 2 Polonaises
Op. 27, 2 Nocturnes
Op. 28, 24 Preludes
Op. 30, 4 Mazurkas
Op. 35, Sonata in B♭ minor
Op. 50, 3 Mazurkas
Op. 63, 3 Mazurkas
Op. 64, 3 Waltzes
Op. 25 No 6, Etude in G♯ minor
The notation of accidentals in the sources shows significant inaccuracies and differences, which, however, do not cause any difficulties in interpreting Chopin's intentions. Due to the use of an octave sign in some of the sources, it is also unclear which signs have to be considered as necessary.
The most serious mistake is included in EE1, in which in bar 47 there is not a single 
lowering a
to a. FC (→GE1) and FE include a giving an a3 before the 1st semiquaver; the sign was added only in EE2 (→EE3) together with a respective in the L.H. In bar 48 in FC, FE and EE1, the giving a1 appears only before the 3rd semiquaver; the necessary sign at the beginning of the bar was added in GE1 and EE2 (→EE3), yet only in EE2 (→EE3) the superfluous in this situation sign before the 3rd third was deleted. It is only GE2 (→GE3) that includes the completely correct notation.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Inaccuracies in GE, Inaccuracies in FE, GE revisions, EE inaccuracies, Inaccuracies in FC
notation: Pitch
