τοῖς οἰκείοις βουλεύμασιν ἁλίσκεσθαι → hoist by one's own petard, hoist with one's own petard, hoist on one's own petard, hoisted by one's own petard, be hoist with one's own petard
subs.
Choice: P. and V. αἵρεσις, ἡ.
Way of escape: P. and V. ἀποστροφή, ἡ, ἔξοδος, ἡ, P. ἀναφορά, ἡ.
One of two alternatives: P. and V. θάτερον δυοῖν.
I see two alternatives: V. βλέπω δύο ῥοπάς (Eur., Hel. 1090).