Tsumego (詰碁) is the Japanese term for a type of go problem based on life-and-death. The term likely comes from tsumeshogi (詰将棋, tsumeshōgi), as tsumeru (詰める) means checkmating in shogi but has different meanings in go. Tsumego problems are common in newspaper columns.
Tsumego problems have been found in Chinese books dating back to around the 13th century. They were presumably composed and collected from actual games much earlier. They range from situations that occur quite commonly, which every...