second
 n.— «From time to time, he engages friends who double as trainers, or “seconds” as they are called in chess parlance. These seconds are players of reasonable playing strength who, ahead of important competitions, study various openings and select positions aimed at preparing the one who would engage them.» —“ King Anand” by Rakesh Rao Frontline (Chennai, India) Oct. 6-19, 2007. (source: Double-Tongued Dictionary)

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