I was very happy to see that many more people tried the puzzle this time compared to the last few weeks. The only correct answer I received though this time was from a new visitor – Shruti Mittal, 15 years old, from Mumbai – very well done Shruti.
At least for me, this was a trial and error kind of puzzle, with a few rules that help you reduce the number of possibilities. The final answer is as follows:
A full approach for solving this through trial and error is also on the video link below:
Hope you enjoyed the puzzle!