Related Clues:

• A friend on board
• The end of the game on board comes at the end of 27 across
• Check this at close of play
• The end of the game on board for the official on board
• Not the right wife for the skipper
• The wife may employ this at last
• With one's wife in check the game's over
• A drink abroad at the end of the game on board
• Word signaling a king's downfall
• ''G'day, ___!''
• Do more than check
• Half of some couples
• Matching sock
• Chess goal
• See 20