On the felicities of graph-based game-board design: four

[ following parts 1, 2 and 3 with a fourth ]
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Back in my student days, I used to have a three dimensional tic-tac-toe board, 4 x 4 x 4, made of plexiglas sheets with holes drilled in them, and using colored golf-tees for markers. I could play pretty well on that board, but these ones would drive me nuts — whether for tic-tac-toe or for HipBone / Sembl.

with a chaser:

And that’s what I call a DoubleTweet.