This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.
If a word conforms to a special rule, I call it a Checkmate Word™.
Use the following examples below to find the rule.
And, if you want to analyze, here is a CSV version:
Checkmate Word™, Not Checkmate Word™
ABBEY,MONASTERY
RANK,FILE
BROOK,STREAM
QUARRY,MINE
IN,OUT
ERROR,MISTAKE
REQUIRE,REQUEST
KINE,COWS
BARRIER,OBSTACLE
BANK,MONEY
BONE,SKULL
REAR,FRONT
ROOK,PAWN
QUEEN,BISHOP
Note: This is my first puzzle of this kind, so it may not be well-worked.