Still missing, but there's some news.
Mama called me around 7 pm, she was with the cops, in Obukhiv (about 45 km from Kyiv, population 30,000 or so).
At the local hospital, they found an entry with my father's full name in their records: Khokhlov Igor Sergeevich. He was brought there by the police around 11 am on July 18, a day and a half after his disappearance. Amnesia was his preliminary diagnosis. They sent for a neurologist. But as they were waiting, my father just got up and left the hospital, and they didn't bother to stop him.
Mama was so hopeful at first. Especially because he was able to give them his full name. But then they looked around and found no trace of him, nor could they find the cops who brought him there and the nurse who let him slip away.
A week ago. He could be anywhere now. Again.
He must've gotten to Obukhiv by bus. We had been thinking of this direction, but didn't really believe someone would agree to give him a ride for free.
It's like looking at the stars: the light you see was actually there hundreds of thousands years ago, and by now the star may no longer exist at all, but there's no way for us to know.
Mama and the cops will return to Obukhiv tomorrow morning and continue the search.