Angels and Devils:
The math game Angels and Devils is played on graphing paper with one player designated the angel and the other the devil. The angel has a set power of k at the start of the game (any natural number of one or higher that you choose) that determines how far it can move per turn. The angel begins on a random point where two lines intersect on the paper and moves as many spaces as k allows. For his or her turn, the devil can then put a block in any square besides the one occupied by the angel. The angel can jump over blocks but not land on them. The devil wins by preventing the angel from moving. In the same way, the angel wins by surviving indefinitely.
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