at Colonus, Eteocles and Polynices are also culpable: they consent (l. 429, Theodoridis, tr.) to their father's going to exile, which is one of his bitterest charges against them. Other plays In addition to the three Theban plays, there are four surviving plays by Sophocles: Ajax, Women of Trachis, Electra, and Philoctetes, the last of which won first prize in 409 BC. Ajax focuses on the proud hero of the Trojan War, Telamonian Ajax, who is driven to treachery and eventually suicide. Ajax becomes gravely upset when Achilles’ armor is presented to Odysseus instead of himself. Despite their enmity toward him, Odysseus persuades the kings Menelaus and Agamemnon to grant Ajax a proper burial. The Women of Trachis (named for the Trachinian women who make up the chorus) dramatizes Deianeira's accidentally killing Heracles after he had completed his famous twelve labors. Tricked into thinking it is a love charm, Deianeira applies poison to an article of Heracles' clothing; this poisoned robe causes Heracles to die an excruciating death. Upon learning the truth, Deianeira commits suicide. Electra corresponds roughly to the plot of Aeschylus' Libation Bearers. It details how Electra and Orestes avenge their father Agamemnon's murder by Clytemnestra and Aegisthus. Philoctetes retells the story of Philoctetes, an archer who had been abandoned on Lemnos by the rest of the Greek fleet while on the way to Troy. After learning that they cannot win the Trojan War without Philoctetes' bow, the Greeks send Odysseus and Neoptolemus to retrieve him; due to the Greeks' earlier treachery, however, Philoctetes refuses to rejoin the army. It is only Heracles' deus ex machina appearance that persuades Philoctetes to go to Troy. Fragmentary plays Although over 120 titles of plays associated with Sophocles are known and presented below, little is known of the precise dating of most of them. Philoctetes is known to have been written in 409 BC, and Oedipus at Colonus is known to have only been performed in 401 BC, posthumously, at the initiation of Sophocles' grandson. The convention on writing plays for the Greek festivals was to submit them in tetralogies of three tragedies along with one satyr play. Along with the unknown dating of the vast majority of over 120 plays, it is also largely unknown how the plays were grouped. It is, however, known that the three plays referred to in the modern era as the "Theban plays" were never