Shogi is a strategic board game for two players that evolved in Japan between the 8th and 12th centuries. People often call it Japanese chess in the West, but that label is misleading. The game uses a 9 × 9 board and flat wedge-shaped tiles of a single color. Rank is defined by text on the pieces. The rules differ completely from chess.
The Drop Mechanic
The most unique feature is the drop rule. Captured pieces can be placed on empty squares. This happens under specific restrictions. Most pieces promote when they reach certain board regions. Flipping the tile indicates promotion. Ownership shows by the wedge direction.
“Its most unique feature is known as the drop, whereby a captured piece can be placed on an empty square, subject to certain restrictions.”
Shogi players must master these mechanics to succeed.