A server device uses cameras to capture the images of cards dealt to players and a dealer. The server device automatically judges the game win/lose result of the players and the dealer and the dividends of the players through image recognition based on the card images from the cameras. The server device reads information from the wireless IC tags provided on game chips to judge the dividends of the players. The server device compares between the two dividends of a player to judge whether or not the dividends are inconsistent. If the dividends are inconsistent, the server device notifies the dealer and a casino hotel manager that the dividends are inconsistent.