Also fukasanjō-no-seki 深三畳席. A tea ceremony room of three mats. One of the mats is about one quarter normal size, daime 台目, due to the placement of the firebox, *rodan 炉壇, on the inner or outer corner of the mat which is usually bordered by a plank, *mukō-ita 向板 that is 45 cm wide. Fukasanjō is a style of tea ceremony room traditionally attributed to Sen no Rikyū 千利休 (1522-91), who also created the two-mat tea ceremony room. The fukasanjō style flourished in the Momoyama period and incorporated a number of designs chiefly revolving around the placement of the hearth. According to the *Nanbōroku 南方録 (late 16th century), a portable hearth was at first placed on a board of varying lengths (from 42-48 cm). Later the hearth was cut into the floor; however, this rendered one of the three mats overly small and inconvenient for the great masters to display their treasured utensils. The fukasanjō eventually became obsolete, replaced by a variety of other small tea ceremony room designs. Examples: Saigyōan 西行庵, Kyoto, regular mats, one small mat and inserted mukō-ita. Kihakuken 既白軒, Myōshinji Keishun'in 妙心寺桂春院 (early 18th century), Kyoto.