What is a Checkmate Word™?

Question

_{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.}

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If a word conforms to a special rule, I call it a Checkmate Word™.

Use the following examples below to find the rule.

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

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.

Answer 1

A word is a Checkmate word if

The majority of the consonants in the word are from the set $B,R,K,N,Q$ - the letters representing the major chess pieces.

Or even more specifically

If we count $Y$ as a vowel (semi-vowel) then all of the consonants in the word are from this set.