My only son was born when I was 37 years old. This was exactly 32 years after my grandfather's death, and he died at the age of 64. My grandfather was 12 years older than my grandmother, and they got married in 1947, when my grandmother was 18 years old.

In which year was my son born?

Note: Ignore any discrepancies related to specific birth dates; you can assume, for example, that all the people mentioned have their birthdays on the same day.

(M. Smitková)

Hint: How old was the grandfather when he got married?
We can solve the task according to the given information from the back:

In 1947, the grandmother was 18 years old and the grandfather was $30(=18+12)$.

The grandfather died at the age of 64, which was 34 years after the wedding $(64-30=34)$, which was in 1981 ( = $1947+34)$.

The son was born 32 years after the grandfather's death, i.e., in 2013 ( = $1981+32)$.

Note. The derived relationships can be illustrated on a timeline:

| ${ }^{*} \mathrm{D}$ | ${ }^{*} \mathrm{~B}$ | $\mathrm{~B}+\mathrm{D}$ | $\dagger \mathrm{D}$ | ${ }^{*} \mathrm{~S}$ |
| :---: | :---: | :---: | :---: | :---: |
| 1 | + | +1 | +1 | +1 |
| 1917 | 1929 | 1947 | 1981 | 2013 |

Be aware that without further clarification, the solution to the problem is not unique. For example, if the grandfather was born on December 31, 1916, and the grandmother on January 1, 1929, they would be 12 years (and one day) apart, although the first year would differ from the one mentioned above. While solvers are not expected to discuss multiple possibilities, such observations or examples are commendable.