An incomplete Kal-toh.
A completed Kal-toh.
- You may be looking for Kalto Province.
Kal-toh was a Vulcan game of intense strategy that could be played solitarily or by multiple individuals. The object of kal-toh, as stated by Tuvok, "Is not about striving for balance but about finding the seeds of order even in the midst of profound chaos." A kal-toh set consisted of a number of playing rods called t'an.
When described by Harry Kim to an amnesic Tuvok, he said "The object of the game was to turn this jumble of rods into a perfect sphere", and that each player takes turns to position pieces, the one managing to form the final intended shape winning. (VOY: "Riddles")
When Harry Kim referred to kal-toh as "Vulcan chess", Tuvok commented that, "Kal-toh is to chess as chess is to tic-tac-toe." (VOY: "Alter Ego") Kim played several games with Tuvok, noting that it was surprisingly addictive for a game of pure logic, although he never managed to defeat Tuvok before Voyager returned to the Alpha Quadrant.
In a holodeck simulation created by The Doctor that included numerous historical figures, the holograms of Socrates and T'Pau played kal-toh together. (VOY: "Darkling")
During a game played by Tuvok and Harry Kim, Seven of Nine took a turn for Harry and beat Tuvok in one move, claiming she used elementary spatial harmonics to do so. (VOY: "The Omega Directive")
Tuvok, Icheb and Harry Kim often had a match of kal-toh together. Icheb was quite talented with the game, although Tuvok blamed Icheb's first victory over him on an early manifestation of his degenerative neurological condition. (VOY: "Endgame")
- In an alternate timeline, Captain Harry Kim kept a kal-toh game in his ready room aboard the USS Rhode Island. (VOY: "Endgame")