Tony Paletta wrote on Mon, May 19, 2003 11:26 PM UTC:
Since chess involves an interaction of at least two 'minds', one problem
may be trying to simulate the missing opponent. Man-vs-computer does a
pretty good job of creating a solitaire!
Rule-based moves (as in Chess Patience) or fixed, ordered lists of pieces
to move have been tried, but they lack the 'feel' of chess competition.
Problem solving (timed, possibly competitive, etc.) is a decent try at
creating a solitary chess-like activity.