Puzzle creator Cihan Atkay wrote two puzzles that appeared in this year’s Google US Puzzle Championship test. On his blog, he’s posted four puzzles that were not included and they’re pretty interesting.
- Folding Sudoku - I’m not surprised that this wasn’t included since it requires solvers to cut the grid out of the paper and fold it. (Scissors are not on the USPC allowed list.) Still, it’s a very original sudoku variation. I’m not sure that I entirely get it, though.
- Numberless Kakuro - Digits are replaced with letters.
- Cardboard - Requires you to fit abbreviations of former WPC hosts into a grid. Puzzles like this show up in Atkay’s PQRST newsletter.
- Loop Lengths - Draw a single closed loop on a grid. The loop must enclose the letters required to spell the loops length.
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