Related Clues:

• "G'day, ___!"
• Perth pal
• Game-ending word
• Chess win
• Captain's aide
• Kasparov kayo
• Chess player's cry
• Coup in a certain board game
• Husband or wife
• One of a matched pair
• Aussie pal
• Pirate address
• Captain's underling
• Winner's check?
• Adam, to Eve