license: This image is a derivative work of the following images: File:Chess_tile_ql.svg licensed with PD-self 2009-05-03T21:46:50Z Cäsium137 64x64 (10314...
was made and how to use it, see Image:Chess tile pd.png. Derivative works of this file: Chess tile ql-whitebg.svg English determination method: SHA-1...
