There already is an excellent Twixt puzzle site at http://www.ibiblio.org/twixtpuzzles/ with an interactive Javascript board. But the format there is restricted to 12x12 quarter board sections of a larger board. Wetpaint might be a home for other size grids, or puzzles which include all four border rows instead of just two, or puzzles where finding the key move is not enough to claim a solution, or perhaps for Twixt variants such as diagonal border lines.

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