Possible Clues:

• The puzzle of the screen
• Strain produced by puzzle
• Sphinx's poser
• It is used to 25 across through puzzle
• Hot plate initially off? That's puzzling
• Religious leader died, resurrected around the end of April; it's an enigma
• Make many openings in puzzle
• That conundrum is all full of holes
• Word puzzle or coarse sieve
• Puzzling person, thing