Answer: mate

AnswerCrossword Clue
MATEAussie's pal
MATEOther sock
MATELast word in chess?
MATEBuddy
MATEPal of Sydney
MATEChess ending
MATEFriend of Adelaide
MATEKing's downfall, maybe
MATEPlay or room follower
MATEBetter half, so to speak
MATEChess announcement
MATELast word in a chess game, maybe
MATEChess goal, for short
MATECrewman
MATEChess win
MATELife partner
MATEWin for Kasparov
MATEWin for Kasparov, for short
MATECanberra comrade
MATELeft-hand glove, to the right
matetealike South American beverage made from the dried leaves of an evergreen tree
MATEColleague
MATESignificant other
MATEMissing sock
MATEPal
MATEBrisbane buddy
MATEAn associate.
MATEPartner
MATESpouse
MATEKasparov coup
MATEOne's other half
MATE"I win," to a chess player
MATEBoard game ender
MATEChess-game conclusion
MATEFinale for Fischer
MATEBest on a chessboard
MATEGame-ending move
MATEGame-ending word
MATEOne of a pair
MATEWord about a king's downfall