Possible Clues:

• Check off for the auditor who wrote the three sisters?
• Writer's ordinary volume supporting scrutiny, say
• Russian author
• 'Three Sisters' writer
• Playwright whose works include The Cherry Orchard
• Picked up restaurant bill of writer
• Russian playwright whose works include The Cherry Orchard
• Mark as dealt with in audition for author
• Reportedly tick off playwright
• The Seagull's author