If you had a Java-capable browser, you could play TriC here.
Keys "s"=save "l"=load "b"=back once

Anthony Patton, 1975. Three-handed hexagonal chess. Whoever captures the first king takes over the army; afterwards, win lose or draw normally.

Chess Variants

Meet Ed

These are simple illustrations rather than strong opponents.

Bug reports? -- Thank you! Keep them coming!