| Zen masters often use nonsensical or unsolvable riddles, or koans, to bring about enlightenment. |
| Assumptions of the world as fair and manageable are shattered by an unsolvable mystery that can go on for a lifetime. |
| They often come up with solutions for what seemed like unsolvable problems. |
| It is that unique and individual genetic code that is helping law enforcement solve unsolvable crimes. |
| They pursue impossible dreams, work ridiculous hours, and resolve unsolvable problems. |
| Most cells seem ready to commit to programmed cell death when faced with an unsolvable loss of matrix attachment. |
