Add Chess Game To Python/Games

Author: Saubhagya Sharma

Python/Games/Chess.py

@@ -0,0 +1,84 @@
+def create_board():
+    # Set up chess board as an 8x8 array
+    board = [
+        ["r", "n", "b", "q", "k", "b", "n", "r"],
+        ["p", "p", "p", "p", "p", "p", "p", "p"],
+        [" ", " ", " ", " ", " ", " ", " ", " "],
+        [" ", " ", " ", " ", " ", " ", " ", " "],
+        [" ", " ", " ", " ", " ", " ", " ", " "],
+        [" ", " ", " ", " ", " ", " ", " ", " "],
+        ["P", "P", "P", "P", "P", "P", "P", "P"],
+        ["R", "N", "B", "Q", "K", "B", "N", "R"]
+    ]
+    return board
+
+def print_board(board):
+    print("\n   a b c d e f g h")
+    print("  -----------------")
+    for i, row in enumerate(board):
+        print(str(8-i) + "|", end=" ")
+        for piece in row:
+            print(piece, end=" ")
+        print("|" + str(8-i))
+    print("  -----------------")
+    print("   a b c d e f g h\n")
+
+def parse_move(move):
+    # Example move: e2e4
+    if len(move) != 4:
+        return None
+    cols = {"a":0,"b":1,"c":2,"d":3,"e":4,"f":5,"g":6,"h":7}
+    try:
+        from_col, from_row, to_col, to_row = move[0], int(move[1]), move[2], int(move[3])
+        return 8-from_row, cols[from_col], 8-to_row, cols[to_col]
+    except (KeyError, ValueError):
+        return None
+
+def valid_move(board, fr, fc, tr, tc, turn):
+    piece = board[fr][fc]
+    dest = board[tr][tc]
+    if piece == " " or (turn == "white" and piece.islower()) or (turn == "black" and piece.isupper()):
+        return False
+    # Basic move validation: allow moving to empty square or capturing opponent
+    if turn == "white" and dest.isupper():
+        return False
+    if turn == "black" and dest.islower():
+        return False
+    return True
+
+def make_move(board, fr, fc, tr, tc):
+    board[tr][tc] = board[fr][fc]
+    board[fr][fc] = " "
+
+def main():
+    board = create_board()
+    print("Simple Chess Game")
+    print_board(board)
+    turn = "white"
+    while True:
+        move = input(f"{turn.capitalize()} move (e.g. e2e4): ").lower().strip()
+        if move == "exit":
+            print("Game exited.")
+            break
+        pos = parse_move(move)
+        if not pos:
+            print("Invalid input! Format: e2e4")
+            continue
+        fr, fc, tr, tc = pos
+        if valid_move(board, fr, fc, tr, tc, turn):
+            make_move(board, fr, fc, tr, tc)
+            print_board(board)
+            # Basic checkmate detection (ends when king captured)
+            pieces = sum(row for row in board)
+            if "k" not in pieces:
+                print("White wins! (Black king captured)")
+                break
+            if "K" not in pieces:
+                print("Black wins! (White king captured)")
+                break
+            turn = "black" if turn == "white" else "white"
+        else:
+            print("Invalid move or move not allowed!")
+
+if __name__ == "__main__":
+    main()