Adjective
not solved
Source: WordNetIf the lesser mind could measure the greater as a foot-rule can measure a pyramid, there would be finality in universal suffrage. As it is, the political problem remains unsolved. George Bernard Shaw
Pure mathematicians just love to try unsolved problems - they love a challenge. Andrew Wiles
A capacity, and taste, for reading, gives access to whatever has already been discovered by others. It is the key, or one of the keys, to the already solved problems. And not only so. It gives a relish, and facility, for successfully pursuing the [yet] unsolved ones. Abraham Lincoln
There are, roughly speaking, two kinds of mathematical creativity. One, akin to conquering a mountain peak, consists of solving a problem which has remained unsolved for a long time and has commanded the attention of many mathematicians. The other is exploring new territory. Mark Kac
How many great problems have gone unsolved because men didn't know enough, or have enough faith in the creative process and in themselves, to let go for the whole mind to work at it? Daniel Keyes
Women and fiction remain, so far as I am concerned, unsolved problems. Virginia Woolf