The IF Comp is now over — full results and stat breakdown here — and a number of authors have been posting post-mortems and notes about their thoughts while writing. I love reading these things, as they’re often revealing insights into people’s processes.
They are, of course, spoilery by their nature, so read with care.
Coloratura (and see also earlier posts for details on specific aspects of the design)
Moquette, plus a second post about technical features
Machine of Death
Tex Bonaventure (specifically the final puzzle)
Captain Verdeterre’s Plunder
The House at the End of Rosewood Street