Puzzle Lab: Puzzles involving the changed basic Priest cards have not been updated, rendering several impossible · Issue #1318 · HearthSim/hs-bugs · GitHub
The Lich King – Hearthstone Mercenaries
Hearthstone's single-player Puzzle Lab is packed with terrifyingly tough brain-teasers
The Boomsday Project - Hearthstone Wiki
Dr. Boom Puzzle Lab Solutions Guide - Dr. Boom Puzzles List, Answers, & Tips - Hearthstone Top Decks
The Boomsday Project now added in Solo Adventures : r/hearthstone
Boomsday Project Mirror Puzzle #8 Now unsolvable because of Holy Smite buff (more in comments) : r/hearthstone