Well, it happened. My worst fears realised.
Not one bid. Not one entry received.
And no-one asking for more time to solve the challenge.
So, the disappointing results are:
1st - 1786 POC1
2nd - 1560 POC3
3rd - 1512 POC2
POC2 and POC3 are closely related, but have some significant structural differences that make them separate "entries".
The next challenge will be up very soon.
I hope it generates more enthusiasm than Grinder......