Classic chess

Classic Chess is a digital adaptation of the traditional board game of chess, a two-player strategy game with origins tracing back to 6th century India. The game simulates the standard rules of international chess as codified by the World Chess Federation (FIDE). The objective is to checkmate the opponent’s king, placing it under an inescapable threat of capture. The game is played on an 8x8 grid of alternating light and dark squares. Each player begins with 16 pieces: one king, one queen, two rooks, two bishops, two knights, and eight pawns. The pieces are arranged on the two ranks closest to each player. White moves first, followed by alternating turns. Classic Chess provides a digital board with piece movement governed by standard chess laws, including castling, en passant, and pawn promotion. The game typically includes options for playing against a computer opponent of adjustable difficulty or against another human on the same device. No time controls, rating systems, or online multiplayer features are assumed in the base version, though some implementations may include them. The interface presents a top-down view of the board, with pieces rendered as 2D symbols or 3D models. The game does not include tutorials or hints, relying on the player’s pre-existing knowledge of chess rules.

Gameplay and controls are executed through point-and-click or touch input. A player selects a piece by tapping or clicking on it. Valid moves for that piece are then highlighted on the board, typically with colored dots or squares. The player completes a move by selecting one of the highlighted destination squares. To capture an opponent’s piece, the player moves their piece onto the square occupied by the opponent’s piece. Castling is performed by moving the king two squares toward a rook, after which the rook automatically jumps to the square next to the king. En passant capture is executed by moving a pawn diagonally to the square behind an opponent’s pawn that has just advanced two squares. Pawn promotion occurs automatically when a pawn reaches the opposite end of the board; a menu or pop-up appears for the player to choose a queen, rook, bishop, or knight. The game interface includes a move history log, a button to undo the last move, and a button to reset the board. The computer opponent, if enabled, calculates its moves based on a programmed evaluation function and search algorithm. The game ends when a checkmate is delivered, a stalemate occurs, or a player resigns by selecting a resign option. Draw conditions such as threefold repetition or the fifty-move rule are automatically detected and declared by the software.