In another of this author's plays, a secretary named Maria insists that she does not have permission to translate (*) Ptydepe, a fictional language that obfuscates Josef Gross' understanding of the title document.
In one of this author's plays, a character who never appears on stage uses chinks and cracks in the wall to spy on people in the main setting, although everyone he watches knows he is there. Another of this writer's plays begins with the protagonist playing chess by himself until the doorbell rings, after which his parents send his brother Peter into a pantry for being a "bourgeois intellectual." That play's protagonist yells "Checkmate!" at the end of a convoluted speech in which he questions his own identity. In another of this author's plays, a secretary named Maria insists that she does not have permission to translate (*) Ptydepe, a fictional language that obfuscates Josef Gross' understanding of the title document. In a play by this author, a chatty inaugurator named Hugo Maxy is among the attendees of the title event at the Liquidation Office, which is visited by Hugo Pludek. For10 points, name this Czech playwright who wrote The Memorandum and The Garden Party. 
In one of this author's plays, a character who never appears on stage uses chinks and cracks in the wall to spy on people in the main setting, although everyone he watches knows he is there.
Vaclav Havel