CHATURANGA VS SHOGI

Chaturanga (Sanskrit: चतुरङ्ग; caturaṅga), or catur for short, which means 'Four Divisions' (referring to ancient army divisions of infantry Pawn (chess), cavalry Knight (chess), elephantry Alfil (chess), and chariotry Rook (chess)), is an ancient Indian strategy game that is commonly theorized to be the common ancestor of the board games chess, xiangqi, shogi, sittuyin, and makruk. Chaturanga is first known from the Gupta Empire in India around the 6th century AD. In the 7th century, it was adopted as chatrang (shatranj) in Sassanid Persia, which in turn was the form of chess brought to late-medieval Europe. According to Stewart Culin, chaturanga was first described in the Hindu text Bhavishya Purana. The exact rules of chaturanga are unknown. Chess historians suppose that the game had similar rules to those of its successor, shatranj. In particular, there is uncertainty as to the moves of the Gaja (elephant). The origin of chaturanga has been a puzzle for centuries. It has its origins in the Gupta Empire, with the earliest clear reference dating from the sixth century of the common era, and from north India. The first substantial argument that chaturanga is much older than this is the fact that the chariot is the most powerful piece on the board, although chariots appear to have been obsolete in warfare for at least five or six centuries. The counter-argument is that they remained prominent in literature. Several more recent scholars have proposed a gradual evolution in the centuries B.C. in the northern or northwestern border areas of Indian culture, where it was in contact with Greek culture brought by the Macedonian-Greek army, and where some rulers issued coins with fused Greek-Indian imagery. Myron Samsin argues that chaturanga originated in the kingdom of Bactria, ca. 255–55 B.C., in a fusion of the many short-moving men of the Greek game petteia, or poleis, with men derived from the various moves of an Indian race game, perhaps Seega or Chaupur, on the ashtapada, the board of another race game.

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Shogi (将棋, shōgi, English: /ˈʃoʊɡiː/, Japanese: , also known as Japanese chess or the Game of Generals, is a two-player strategy board game that is the Japanese variant of chess. It is the most popular chess variant in Japan. Shōgi means general's (shō 将) board game (gi 棋). Shogi was the earliest chess variant to allow captured pieces to be returned to the board by the capturing player. This drop rule is speculated to have been invented in the 15th century and possibly connected to the practice of 15th century mercenaries switching loyalties when captured instead of being killed. The earliest predecessor of the game, chaturanga, originated in India in the 6th century, and the game was likely transmitted to Japan via China or Korea sometime after the Nara period. 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 (c. 1120). Two players face each other across a board composed of rectangles in a grid of 9 ranks (rows, 段) by 9 files (columns, 筋) yielding an 81 square board. In Japanese they are called Sente 先手 (first player) and Gote 後手 (second player), but in English are conventionally referred to as Black and White, with Black the first player. The board is nearly always rectangular, and the rectangles are undifferentiated by marking or color. Pairs of dots mark the players' promotion zones.

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