Not had a chance to try this yet but looks pretty good to me, especially for free
Archaeologists have discovered a medieval tomb in a cave in England, whose owner was a chess enthusiast.
Evil spirits are preventing the researchers from entering the main chamber.
And it seems that the only way in or out is to play chess with the dead until he is satisfied.
• Fully animated 3D chess pieces.
• Realistic water and destruction effects.
• Allows you to create custom games. You can place as many pieces as you want except for the kings.
• Includes all the special rules of chess: castling, en passant, and promotion.
• Provides three additional rules for you to try: summoning pawns, swapping pieces, and instant promotion.
• Provides both the offline and the online mode.
• Allows you to save and load games.