10 Jan
2016
10 Jan
'16
11:41 a.m.
I have two questions about this type of puzzle: 1) Does it have a name? 2) Are there heuristics for designing puzzles that are very hard? -Veit
On Dec 15, 2015, at 7:08 PM, rcs@xmission.com wrote:
Has anyone done the GCHQ puzzle yet? The grid & constraints are at
http://www.bbc.com/news/uk-35058761
I noticed one row was completely specified by the information supplied.
Rich