Celtic Whist is an adaptation of Oneonta Whist for Stonehenge: An Anthology Board Game. Oneonta Whist was derived from Spades and Whist, with a design goal of providing a solitaire trick-taking game. As a result, Celtic Whist allows one to five players to play a trick-taking game against a timing element.
As is typical for Richard Hutnik's designs, there are numerous variants offered up, as well.