- isCastle960(value: unknown): value is "bb" | "wb" | "ba" | "bg" | "bc" | "bd" | "be" | "bf" | "bh" | "wa" | "wg" | "wc" | "wd" | "we" | "wf" | "wh"
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Returns value is "bb" | "wb" | "ba" | "bg" | "bc" | "bd" | "be" | "bf" | "bh" | "wa" | "wg" | "wc" | "wd" | "we" | "wf" | "wh"
Whether the given value represents a valid Castle960 or not.