[UVA][BFS+HASH] 652 - Eight
Eight
The 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've
seen it. It is constructed with 15 sliding tiles, each with a number from 1 to 15 on it, and all packed
into a 4 by 4 frame with one tile missing. Let's c...
