Sam Loyd's Black Queen

Origin
Samuel Loyd (1841 - 1911 ) was a composer, puzzle author and recreational mathematician which aided in the fact that he was the best chess player of his time. His passion for the game was passed down to his son, Sam Jr., however Sam used to come home in tears telling his father that other kids at school would tease him about loving chess and playing it by himself during break. Loyd gave his son his own Black Queen piece telling him that if he was ever afraid and squeezed the piece he would be protected from anything by his own Guardian Angel. Of course there wasn't an angel but the piece itself.

Effects
Coming from Loyd's desire to protect his son a protective shield surrounds the person holding it. No matter what size the person is a shield that extends to five inches around the person appears. So far tests show that the shield remains when punched, kicked, stabbed and even shot by a standard government issued pistol and a fully charged Tesla blast.