Kriegspiel (chess) illegal, the player tries again; if it is legal, that move stands. Each player is given information about checks and captures. They may also ask the referee if there are any legal captures with a pawn. Since the position of the opponent's pieces is unknown, Kriegspiel is not a game with perfect information. As each player cannot see his opponent's pieces, the game is sometimes referred to as "blind chess". There are several different rule sets for Kriegspiel. The most widespread rules are those used on the Internet Chess Club, where Kriegspiel is called "Wild 16". The rules are as
Chess rules were most recently revised in 2017. Chess is played on a square board of eight rows (called ' and denoted with numbers "1" to "8") and eight columns (called ' and denoted with letters "a" to "h"). The colors of the 64 squares alternate and are referred to as "light" and "dark" squares. The chessboard is placed with a light square at the right-hand end of the rank nearest to each player. By convention, the game pieces are divided into white and black sets, and the players are referred to as "White" and "Black" respectively. Each player begins the