Urawa Red Diamonds Urawa Red Diamonds , colloquially Urawa Reds, are a professional association football club playing in Japan's football league, J1 League. The name Red Diamonds alludes to the club's pre-professional era parent company Mitsubishi. The corporation's logo consists of three red diamonds, one of which remains within the current club badge. Its hometown is the city of Saitama in Saitama Prefecture, but its name comes from the former city of Urawa, which is now a part of Saitama City. Shin-Mitsubishi Heavy Industries established a football club in 1950 in Kobe and moved the club to Tokyo in 1958. In 1965 it
Empty triangle Empty triangle In the game of Go, the empty triangle is the most fundamental example of the concept of bad shape. Three stones of one color form an empty triangle when they are placed in a triangle arrangement that fits in a 2×2 square, and when one intersection is left empty. If the triangle is "filled" by a stone of the opponent's at the fourth point of the 2×2, the shape is neutral – not necessarily good or bad. The deficiencies of the empty triangle are twofold. Three stones in a straight line have eight liberties, while in an empty