The Half of X of Life

Awakening under the same sky of embroidered stars, the maiden immediately understood that this must be part of the effect of Sigrid's spell. Again she was awake inside Alexander's body. Would that happen every night? So was that what it meant, 'give him half your life?

Of course. Probably evenly sharing her life with Alexander was impossible. As much as it was difficult to calculate the half of X of life, mentioned in a famous oriental mathematical puzzle, it was pretty impossible to predict how long someone would live. Then they would have to divide life into more or less equal portions. One would keep the day, and the other the night of each day.

It was almost fair, under the circumstances.