Problem of the Month – January 2020 Correct Solutions by, Toshihiro Shimizu, Kawasaki, Japan Muti Kara, Ankara Atatürk Anadolu Lisesi Roger Bengtsson, Lund, Sweden Harold Bögelholz, Melbourne, Australia Solution: http://www.fen.bilkent.edu.tr/~cvmath/Problem/2001a.pdf