Related Clues:

• Ship's officer
• Close associate
• End of a match
• Great Britain, vis-a-vis the United States
• ''G'day'' recipient
• Win for Fischer
• Friend in need, perhaps
• Ending for Kasparov
• Outback buddy
• Pact participant
• Chess player's ''I win''
• Recipient of 'G'day'
• Friend by treaty
• Corner, as a king
• The other shoe, e.g.