Recall that one possible Euclidean 2-D Universe is a Klein bottle. In Klein bottle tic-tac-toe, we identify the left and right sides of the board straight across. The top and bottom are glued via a reflection in the vertical line through the middle of the game board like in class and lab. This would then form the Klein bottle.

a) Sketch the Klein bottle tic-tac-toe board nearest your table in your notes
b) By-hand (without using the Torus Games app), draw a tiling view of the original game pieces, above, below, and to the right and left of the main game board.
c) By-hand, mark off where "x" can go to win only on the main board [the center board]
d) Check with others at your table
e) Fill in b) and c) on the board