In the summer camp, Alyosha, Borya, Vitya and Grisha. All of them are of different ages, study in different classes (with
7th to 10th) and are engaged in different circles:
mathematical, aircraft modeling, chess, and photo circles.
It turned out that
- the photographer is older than Grisha;
- Alyosha is older than Viti, and the chess player is older than Alyosha;
- on Sunday Alyosha played tennis with the photographer, and
Grisha at the same time lost to the model aircraft designer in the towns.
Determine who is in which circle