In chess, a double check is a check delivered by two pieces at the same time. In chess notation, it is sometimes symbolized by "++" (but "++" is also used to denote checkmate).
Read more about Double Check: Discussion, Variants and Triple Check
Famous quotes containing the words double and/or check:
“I grew up confidently expecting to have a profession and earn my own living, and also confidently expecting to be married and have children. It was fifty-fifty with me. I was just as passionately determined to have children as I was to have a career. And my mother was the triumphant answer to all doubts as to the success of this double role. From my earliest memory she had more than half supported the family and yet she was supremely a mother.”
—Crystal Eastman (1881–1928)
“Every sect is a moral check on its neighbour. Competition is as wholesome in religion as in commerce.”
—Walter Savage Landor (1775–1864)