Bit late to posting a summary because of traveling and then falling ill. Anyway, just a few quick notes.

Firstly, congratulations to jaku111 (2982.4 points), TiiT (2882.6 points) and deu (2865.1 points), the podium finishers.
This screen test definitely had some things that were bad, pretty obviously my own doing. But the biggest positive I'll take from it is that the general format/timing/etc. seems to have been a success. I wanted many solvers to be able to attempt most of the grids, and this is what happened.

Also, about Just One Cell idea, I think its probably fine to do but it takes more checking, and probably not using variants with too many constraints.

The interface is superb as always, but as usual had some feedback directed towards it. Firstly, the color button implementation, I think, was fine. It'll stay. I'm still not sure about undo button being limited to 2/3 clicks. One change we must work to implement, especially with this easier format, is to enable a solver to visit back to a grid if the solver goes through all 30 grids with time remaining.

Thank you all for participating, and also for the feedback