Three-dimensional chess, Memory Alpha

Three-dimensional chess was a variant of the ancient Earth board game chess. It was an accustomed pastime of Kirk and Spock aboard the USS Enterprise in the 23rd century and its popularity extended into the 24th century. Three-dimensional chess incorporated traditional chess pieces on a chess board of varying designs, for example three levels with the secondary and tertiary levels each having two smaller platforms located between that level and the level above, known as a "half-level". Movement

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Star Trek: The Next Generation Tridimensional Chess Set, Memory Alpha

Enter an intergalactic chess expedition with the Star Trek Tridimensional Chess Set. An iconic Tridimensional Chess Set, as seen in the classic TV

Star Trek Tridimensional Chess Set for 2 players

So does anyone speak Vulcan and play 3 Dimensional Chess? : r/startrek

Three-dimensional chess - Wikipedia

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Tri Dimensional Chess, The Big Bang Theory Wiki

Three-dimensional chess, Memory Alpha

Tri Dimensional Chess, The Big Bang Theory Wiki

Space Checkers by GamerMechanic81, Download free STL model

Three-dimensional chess, Memory Alpha