The game can be played in classical, rapid, or blitz modes:
Classical (‘untimed’ mode): the unlimited time given to both players. For a player to win in this case, they can either checkmate their opponent, or the opponent resigns. Stale mate is considered draw. A ‘Handshake’ is also a draw. Total times taken by the players are maintained (and displayed) nonetheless and the player with less overall time is said to have the ‘Advantage’ in case of a draw.
Rapid: total time of 10 minutes per player, with a 10 sec increment (extra time) after a move is made. For a player to win in this case, they can either checkmate their opponent, or the opponent resigns, or the opponent runs out of time before they do. Draws occur with stale mate and Handshake.
Blitz: Similar to Rapid, but total 5 minutes per player and no increments.

The program has additional capabilities of saving and loading a game.

The program sets up a chess board, allows the two players to make alternate moves, check for invalid entered positions, check for invalid moves:
The game starts with the Player Big/White turn. First, enter the position of the element you want to move. If the position is correct, then it will ask for the position where you want to move. Otherwise, it will show an error message and ask you to again enter the position of the element you want to move.

Detects special conditions such as check, checkmate, stalemate, castling, En passant, pawn promotion, etc from the state of the board.

Press 'r' to resign from the game and 's' to handshake at any time.