one satyr play. Such format is called a continuous tragic tetralogy. It allowed Aeschylus to explore the human and theological and cosmic dimensions of a mythic sequence, developing it in successive phases. A second competition involving five comedic playwrights followed, and the winners of both competitions were chosen by a panel of judges. Aeschylus entered many of these competitions, and various ancient sources attribute between seventy and ninety plays to him. Only seven tragedies attributed to him have survived intact: The Persians, Seven Against Thebes, The Suppliants, the trilogy known as The Oresteia (the three tragedies Agamemnon, The Libation Bearers and The Eumenides), and Prometheus Bound (whose authorship is disputed). With the exception of this last play – the success of which is uncertain – all of Aeschylus's extant tragedies are known to have won first prize at the City Dionysia. The Alexandrian Life of Aeschylus claims that he won the first prize at the City Dionysia thirteen times. This compares favorably with Sophocles' reported eighteen victories (with a substantially larger catalogue, an estimated 120 plays), and dwarfs the five victories of Euripides, who is thought to have written roughly 90 plays. Trilogies One hallmark of Aeschylean dramaturgy appears to have been his tendency to write connected trilogies in which each play serves as a chapter in a continuous dramatic narrative. The Oresteia is the only extant example of this type of connected trilogy, but there is evidence that Aeschylus often wrote such trilogies. The satyr plays that followed his tragic trilogies also drew from myth. The satyr play Proteus, which followed the Oresteia, treated the story of Menelaus' detour in Egypt on his way home from the Trojan War. It is assumed, based on the evidence provided by a catalogue of Aeschylean play titles, scholia, and play fragments recorded by later authors, that three other extant plays of his were components of connected trilogies: Seven Against Thebes was the final play in an Oedipus trilogy, and The Suppliants and Prometheus Bound were each the first play in a Danaid trilogy and Prometheus trilogy, respectively. Scholars have also suggested several completely lost trilogies, based on known play titles. A number of these treated myths about the Trojan War. One, collectively called the Achilleis, comprised Myrmidons, Nereids and Phrygians (alternately, The Ransoming of Hector). Another trilogy apparently recounted the entrance of the Trojan ally Memnon into the war, and his death