Dane Mattson
Superior, WI
Сотрудник Chess.com
Шахматист со званием
Ведущий блогер
Тренер Chess.com
National Master Dane Mattson. Chess.com Daily Puzzle curator, Lessons author. Fellow traveler on the road to chess improvement and fullfilment. Join us for the 2025 Improvement Challenge! 
https://www.chess.com/news/view/announcing-chess-improvement-challenge-2025
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