Related Clues:

• King's downfall
• Pal of Sydney?
• Friend of Sydney
• Couple from China?
• Friend offering tea
• "Game over," to Kasparov
• "G'day" speaker
• Soul _____
• Counterpart in life
• Bill, to Melinda
• Deckhand
• It's the end of the game, chum
• Friend from a text extract
• Get some gamete-on-gamete action
• Final check at chess