If you've been keeping up with the official Hearthstone blog, you may be familiar with their puzzle series. They present a few game set-ups and then give you an objective to complete that turn -- usually it's to win the game! Many of the set-ups seem impossible or near-impossible, but that's what makes the puzzles so intriguing. What a great method for teaching players how to approach even seemingly dire situations.
So far there have been three Hearthstone puzzle posts: