India, Jan. 19 -- If you have ever been to a film festival, you know that two or three of the films you went to watch can sometimes be screened simultaneously. If you watch one of them now, you cannot also be watching the others. Luckily, the biggest draws are screened several times, so it's a question of managing your schedule: watch film A at its first screening, film B at its third screening, and film C at its fourth, using the time in between to catch a couple of unplanned entries.

All this creates enough permutations and combinations for an Einstein puzzle. Since the HT Games section launched online, I have created one Einstein puzzle every Sunday, which has reduced the frequency of such puzzles in Problematics. Let's go back to tha...