English: My spouse's uncle Elstner Hilton took this photo in Japan between 1914 and 1918. We can be grateful to Elstner for having captured this fascinating image. However, a viewer has helpfully pointed out that Elstner misidentified the game. According to flickerite fuyou-hime, the game in question is not "Go" but "Shogi."

According to Wikipedia:

"Shogi (将棋 shōgi?, generals' chess), pronounced /ˈʃoʊɡiː/ (rhymes with yogi) in English, also known as Japanese chess, is a two-player board game in the same family as Western chess, chaturanga, Chinese Xiangqi, and is the most popular of a family of chess variants native to Japan."

"Shōgi means general's (shō 将) boardgame (gi 棋). In early years, however, shogi was written 象棋 (the same as Xiangqi, "elephant chess")."

"The earliest predecessors of the game, chaturanga, originated in India in the 6th century AD, and spread from China to Japan, where it spawned a number of variants. "

"Shogi in its present form was played as early as the 16th century, while a direct ancestor without the "drop rule" was recorded from 1210 in a historical document Nichūreki, which is an edited copy of Shōchūreki and Kaichūreki from the late Heian period (ca 1120)."

"According to ChessVariants.com, "Perhaps the enduring popularity of Shogi can be attributed to its 'drop rule'; it was the first chess variant wherein captured pieces could be returned to the board to be used as one's own. David Pritchard credits the drop rule to the practice of 16th century mercenaries who switched loyalties when captured—no doubt as an alternative to execution."

"Two players, Sente 先手 (Black) and Gote 後手 (White), play on a board composed of rectangles in a grid of 9 ranks (rows) by 9 files (columns). The rectangles are undifferentiated by marking or color. The board is almost always made of rectangles; square boards are very uncommon."

"Each player has a set of 20 wedge-shaped pieces of slightly different sizes. Except for the kings, opposing pieces are differentiated only by orientation, not by marking or color. From largest to smallest (most to least powerful), the pieces are:

1 king 1 rook 1 bishop 2 gold generals 2 silver generals 2 knights 2 lances 9 pawns"

"Several of these names were chosen to correspond to their rough equivalents in international chess, and not as literal translations of the Japanese names."

"Each piece has its name written on its surface in the form of two kanji (Chinese characters used in Japanese), usually in black ink. On the reverse side of each piece, other than the king and gold general, are one or two other characters, in amateur sets often in a different colour (usually red); this side is turned face up during play to indicate that the piece has been promoted."

"The pieces of the two players do not differ in colour, but instead each faces forward, toward the opposing side. This shows who controls the piece during play."

"The Japanese characters have deterred many people from learning shogi. This has led to 'Westernized' or 'international' pieces, which replace the characters with iconic symbols. However, partially because the traditional pieces are already iconic by size, with more powerful pieces being larger, most Western players soon learn to recognize them, and Westernized pieces have never become popular."

For more information, go to Wikipedia at en.wikipedia.org/wiki/Shogi