[ijsjqque] Maze with walls of different heights

Instead of a maze with impenetrable walls, make them of varying heights which can climbed over with varying amounts of

[etserisd] Random tree in a growing sphere

Root node at center surrounded by equally spaced concentric circles.  First concentric circle of radius 1.  I

[cwxuageb] Chess is mostly local, and keep it that way

To see if a piece is attacked, first look for attackers in its local neighborhood.  5x5 is enough to detect King,

[xpffilzj] Variations on Tetravex

Consider some variations on Tetravex as a computer game (GNOME Tetravex).Pieces can be rotated (physical versions of th

[fcqllkql] Symmetric points inside each simplex

In 3D, start with 3 distinct vectors and 3 scalars.  For every matching of the scalars to vectors (i.e., every per