mahjong 138Research shows that mahjong and similar puzzles, including mahjong solitaire, stimulate brain activity, enhance memory, and improve concentration. It is an excellent way to train strategic thinking and problem-solving skills. MahjongMAHJONG 138 EJournal Lembaga Einstein College adalah jurnal akses terbuka yang mempublikasikan artikel ilmiah di bidang ilmu kimia dan pendidikan kimia.