Possible Clues:

• Czar called 'the Great'
• 'Great' czar
• "Great" czar
• Czar known as "the Great"
• "Great" Russian czar
• ''Great'' czar
• Russian leader, 1682-1725
• "Great" Russian emperor
• Russian modernizer known as 'The Great'
• Feodor III's successor as czar