The first I remember reading about the "Blackbird" was in the _The Uncanny X-Men_, during the Claremont & Byrne run in the early 80's. Their jet was modeled on the SR-71, although I don't recall if they explicitly mentioned that model number.
The Atlantic article that Uncle Bob was writing in response to lists several specific examples of software failures that did, or could have, resulted in loss of life: a failure of the 911 system; air traffic control systems; medical devices.
Its like bejeweled\candy crush. You select two or more adjacent colors to perform an "attack".
The "attack" will be one of four choices: You attack, you attack with magic, the enemy attacks you, the enemy attacks you with magic.
So the optimal solution is: Maximize the attacks that benefit you while also picking attacks that either lessen the damage you take OR choose damage against you that set you up for bigger patterns on the next turns.
edit: looks like is can get deeper too. For example, bats have no mana and cannot attack with magic so it is a nice way to move some blocks without taking damage if you dont have any moves.