Paper by Martin L. Demaine

Erik D. Demaine and Martin L. Demaine, “2,664 Coin-Sliding Font Puzzles”, in Exchange Book of the 13th Gathering for Gardner (G4G13), Atlanta, Georgia, April 12–25, 2018, to appear.

We present two font designs, each with 37 symbols (letters, digits, and slash), as grid configurations of the same number of coins. Each pair of symbols (say, A and B) forms a puzzle: re-arrange the first symbol (A) into the second (B) by a sequence of moves. Each move picks up one coin and places it in an empty grid cell that is adjacent to at least two other coins (the “2-adjacency” rule). We also present an online puzzle video game to play all 2,664 of these puzzles, where you can try to set the record on the minimum number of moves.

The paper is 6 pages.

Currently unavailable. If you are in a rush for copies, contact me.
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Related webpages:
Coin Sliding Font

See also other papers by Martin Demaine.
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Last updated November 20, 2018 by Martin Demaine.