Related Clues:

• Better halves
• Paired socks
• Final checks?
• Husbands and wives
• Wins at chess
• They're well-matched
• A couple
• Finishing stratagems
• Kasparov's victories
• Aussie pals
• Mom and dad, e.g.
• Chess victories
• Pub buddies
• Spouses
• They may produce checks