ζατρίκιον
From LSJ
Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη. Τὸ δὲ ἡττᾶσθαι αὐτὸν ὑφ' ἑαυτοῦ πάντων αἴσχιστόν τε ἅμα καὶ κάκιστον. → Τo conquer yourself is the first and best victory of all, while to be conquered by yourself is of all the most shameful as well as evil
English (LSJ)
τό, the game of chess, Sch.Theoc.6.18. (From Skt. catur-a[ndot ]ga- 'four members', through Pers. and Arab.)
Greek (Liddell-Scott)
ζατρίκιον: τό, τὸ γνωστὸν παιγνίδιον, «σκάκι», Σχόλ. Θεοκρ. 6. 18· «παιδιὰ δὲ τοῦτο ἐκ τῆς τῶν Ἀσσυρίων τρυφῆς ἐξευρημένον καὶ εἰς ἡμᾶς ἐληλυθὸς» Ἄννα Κομν. 12, σ. 360· ἴδε Δουκάγγ.· - ζατρικίζω, παίζω τὸ ζατρίκιον, Ἀχμὲτ Ὀνειρ. 241.