A few crossword puzzles, whose theme is clearly connected to the book.
These are New York Times-style puzzles, with the added constraint that many clues come from the book. To do so, I’ve deliberately violated a few key principles of crossword puzzle design. In the first four puzzles, the grid is not symmetric, and I’ve occasionally used some two-letter words. In subsequent puzzles, the proportion of black squares is higher than the required one sixth, or I may have taken less clues from the area of topology.
By the way, they should be much easier to complete if you do have the book. But you may also take up the challenge by yourself.
The difficulty is rated according to the convention that Monday puzzles are easiest, and Friday puzzles are hardest.
All puzzles are provided in both pdf format and AcrossLite format. AcrossLite files are playable online.
- A first topology crossword puzzle, posted Feb 13, 2013: pdf; AcrossLite file. Difficulty: Tuesday (with the book), Thursday (without).
- A second topology crossword puzzle, posted Mar 06, 2013: pdf; Across Lite file. Difficulty: Wednesday (with the book), Thursday (without).
- A third topology crossword puzzle (“the 1.3 Topology puzzle”), posted Mar 27, 2013: pdf; Across Lite file. Difficulty: Tuesday (with the book), Wednesday (without).
- A fourth topology crossword puzzle, posted Apr 10, 2013; pdf; Across Lite file. Difficulty: Thursday (with the book), Friday (without).
- At last, a topology puzzle that obeys the rules, posted Apr 24, 2013; pdf; Across Lite file. Difficulty: Wednesday (with the book), Thursday (without).
- A Sunday-size (23 x 23) puzzle, posted May 16, 2013; pdf; Across Lite file. Difficulty: Monday (with the book), Wednesday (without).
- Compactness! (15 x 15), posted May 29, 2013; pdf; Across Lite file. Difficulty: Tuesday (with the book), Wednesday (without).
- A second Sunday-size (23 x 23) puzzle, posted June 13, 2013; pdf; Across Lite file. Difficulty: Tuesday (with the book), Wednesday (without).
- A puzzle whose theme is “N to the N”, posted July 03, 2013; pdf; Across Lite file. Difficulty: Monday (with the book), Thursday (without).
- A holiday puzzle (21 x 21): pretty large, and meant to keep you busy for some time. Posted July 24, 2013; pdf; AcrossLite file. Difficulty: Wednesday (with the book), Thursday (without).
- Halloween! (15 x 15): freaky difficult, too. Posted October 31, 2013, pdf; AcrossLite file. Difficulty: Thursday (with the book), Friday (without).
- A few things about Sorgenfrey (15 x 15): the 2013 Christmas puzzle (note the tilted Christmas cracker shape!). Some of the definitions are related to the Sorgenfrey line, whence the title. Posted December 24, 2013, pdf; AcrossLite file. Difficulty: Tuesday (with the book), Wednesday (without).
- Saint Patrick’s Day (15 x 15): cloverleaf-shaped, naturally. Posted March 17, 2014, pdf; AcrossLite file. Difficulty: Tuesday (with the book), Wednesday (without).
- End of 2014 (15 x 15): should have been a Christmas special, but apart from 64-down, really has nothing to do with the Season. Posted December 27, 2014, pdf; AcrossLite file. Difficulty: Monday (with the book), Tuesday (without).
- End of 2015 (21 x 21). Posted December 31, 2015, pdf; AcrossLite file. Difficulty: Sunday (for size), but really it’s a Monday as far as difficulty is concerned.
