is a Japanese professional
shogi
, also known as Japanese chess, is a strategy board game for two players. It is one of the most popular board games in Japan and is in the same family of games as Western chess, ''chaturanga, Xiangqi'', Indian chess, and '' janggi''. ''Shōgi'' ...
player ranked 9-
dan
Dan or DAN may refer to:
People
* Dan (name), including a list of people with the name
** Dan (king), several kings of Denmark
* Dan people, an ethnic group located in West Africa
**Dan language, a Mande language spoken primarily in Côte d'Ivoi ...
. He is a former
Ōza title holder and the inventor of the influential
Tsukada Special
In shogi, Tsukada Special (塚田スペシャル ''tsukada supesharu'') is a Floating Rook variant of the Double Wing Attack shogi opening developed by professional Yasuaki Tsukada in the 1980s.
The strategy is characterized by an aggressive offe ...
strategy, which he used to win numerous games in the 1980s, is named after him.
Early life
Tsukada was born in
Tokyo Metropolis
Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and List of cities in Japan, largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, ...
on November 16, 1964. In 1978, he finished