Tetrayon-Nine

The planet Tetrayon-Nine was one of the planets in the Tetrayon system.

One of Alistair Neezley's tall tales was of the time he had “supposedly “tamed glorks on Tetrayon-Eight – or was it Tetrayon-Nine?”. (PROSE: The Frost King's Treasure)

It was the origin of the game of Chellt, which Century Smith once taught Briar. It was a variation of the game of chess involving time loops, suggesting some aptitude at temporal manipulations from the natives of Tetrayon-Nine. (PROSE: Century Smith and the Time Terror)

Behind the scenes

Other planets in the Tetrayon system would be mentioned in other Cupids stories, including Tetrayon Four in The Arena of the Detraxxi (once more as a place Neezley falsely claimed to have visited), Tetrayon Six in The Penultimate Pursuit (its first mention in a context ensuring it actually existed as more than a figment of Neezley's imagination), and Tetrayon-Twelve in The Winter Quests (as the location of a battle pitting the Detraxxi against Century Smith and Briar).