simon-svn: puzzles: simon

[tartarus-commits at lists.tartarus.org]

SVN root:       svn://ixion.tartarus.org/main
Changes by:     simon
Revision:       6209
Date:           2005-08-24 18:32:39 +0100 (Wed, 24 Aug 2005)

Log message (12 lines):
Brand new difficulty level in Solo. The other day Gareth and I
independently discovered an advanced reasoning technique in Map, and
then it occurred to me that since Solo can also be considered as a
graph-colouring game the same technique ought to be applicable. And
it is; so here's a new difficulty level, `Extreme', which sits just
above Advanced. Grids graded `Extreme' by new-Solo will of course
fall into old-Solo's `Unreasonable' category (since they're not
soluble using the old set of non-recursive methods). A brief and
unscientific experiment suggests that about one in six Unreasonable
grids generated by old-Solo are classified Extreme by the new
solver; so the remaining Unreasonable mode (now containing a subset
of the grids it used to) hasn't actually become much harder.

Modified files:
U   puzzles/solo.c

Links:
http://www.tartarus.org/~simon-anonsvn/viewcvs.cgi?rev=6209&view=rev
http://www.tartarus.org/~simon-anonsvn/viewcvs.cgi/puzzles/solo.c?rev=6209&r1=6208&r2=6209