This version of Chester Field - Ankoku Shin heno Chousen is a beta release of the Japanese NES game, implying an early, unfinished version that may contain bugs or incomplete elements. Beta releases are often used for testing purposes before the official release. It is quite rare to find beta versions of older NES games available to the public, therefore making this a collectible item to some.

Chester Field - Ankoku Shin heno Chousen (Japan) (Beta)

Chessmaster, The (Europe)