aboutsummaryrefslogtreecommitdiff
path: root/unfinished/group.gap (follow)
Commit message (Collapse)AuthorAge
* Refer to group elements by letters instead of numbers, in keepingSimon Tatham2010-01-05
| | | | | | | with usual abstract group notation. In puzzles with a clear identity, it's called e. [originally from svn r8812]
* New puzzle in 'unfinished'. Essentially, Sudoku for group theorists:Simon Tatham2009-12-30
you are given a partially specified Cayley table of a small finite group, and must fill in all the missing entries using both Sudoku- style deductions (minus the square block constraint) and the group axioms. I've just thrown it together in about five hours by cloning- and-hacking from Keen, as much as anything else to demonstrate that the new latin.c interface really does make it extremely easy to write new Latin square puzzles. It's not really _unfinished_, as such, but it is just too esoteric (not to mention difficult) for me to feel entirely comfortable with adding it to the main puzzle collection. I can't bring myself to throw it away, though, and who knows - perhaps a university maths department might find it a useful teaching tool :-) [originally from svn r8800]