Easy to see they’re chess players (5-3-5)

I believe the answer is:

black-and-white

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'easy' is the definition.
Both the definition and answer are adjectives. Maybe there's a link between them I don't understand?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Another definition for black-and-white that I've seen is " Involving clearly defined issues".)

I've seen this clue in The Times.

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