- tate.org.uk art/artworks/dadd-the-childs-problem-…The title of this work refers to a position on the chess board which was considered simple enough to have been set by a child.
- useum.org artwork/The-Child-s-Problem-Richard-DaddPortrait of a Young Man by Richard Dadd.
- en.wikipedia.org Richard DaddRichard Dadd (1 August 1817 – 7 January 1886) was an English painter of the Victorian era, noted for his depictions of fairies and other supernatural subjects, Orientalist scenes...
- commons.wikimedia.org wiki/File:Ричард_Дадд.jpgThe Child's Problem 1857 by Richard Dadd 1817-1886.
- streathambrixtonchess.blogspot.com 2011/07/what-…Eduardo Sadier described Dadd’s story to me, involving as it did patricide at the behest of an ancient Egyptian God of the Underworld, as “wonderful and terrible”.
- pinterest.com pin/visual-arts--79305643408521213/1857 Watercolour by the parricide Richard Dadd, who killed his father in 1843 thinking that he was the devil.
- wikidata.org wiki/Q27044869https://www.tate.org.uk/art/artworks/dadd-the-childs-problem-n06251.
- city-journal.org article/the-madman-as-painterMost disturbing of all Dadd’s many disturbing pictures is the watercolor The Child’s Problem.
- eclecticlight.co 2017/07/21/richard-dadd-4-…The problem at the heart is the position on its chess board, considered by chess players to be simple enough as to have been set by a child.
- vk.com @-9265102-the-childs-problem-richard-daddThe Child’s Problem.