Build and Solve is RKO Daytime's longest running game show, hosted by Bob Clayton from 1956 until 1978, Art Fleming from 1978 until 1994, by John O'Hurley from 1994 until 2001, and by Richard Karn since 2001. The show is produced by Mark Goodson-Bill Todman Productions and as of 2013, this show is produced by FremantleMedia and RKO Television Studios. It debuted on RKO Network on April 30, 1956 and continues until now.