puzzles/unfinished/group.gap, branch rockbox My sgt-puzzles tree Refer to group elements by letters instead of numbers, in keeping 2010-01-05T23:40:41+00:00 Simon Tatham anakin@pobox.com 2010-01-05T23:40:41+00:00 dd4c8ceb1f1b05b3d2308829b41f8b35127ed83b with usual abstract group notation. In puzzles with a clear identity, it's called e. [originally from svn r8812] 
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: 2009-12-30T16:53:36+00:00 Simon Tatham anakin@pobox.com 2009-12-30T16:53:36+00:00 c91471e6c155853377d0ac9b5a9a4219c214674e 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] 
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]