Related Clues:

• Newspaper's sure misled about Republican
• Solid, unlike a piece of cake
• Incomprehensible existence, more uncivilised in confinement
• Like a tough nut to crack
• Complicated, like a sandpiper?
• Piece of work, not typically difficult
• Very challenging
• Tough to learn
• Player's challenge? I sympathise
• Tiring party, breaking rocks perhaps
• Far from easy
• Difficult; severe
• Like verified facts
• Difficult, rugged or intricate
• Dickens' times were this tough!