the 'Killer Sudoku' puzzle type. As a side effect I've had to
increase the default tile size of Solo, so that the extra numbers
drawn in the squares in Killer mode were still legible.
[originally from svn r8455]
and also updates the docs for both that and the Mines cursor support
in r8402.
[originally from svn r8408]
[r8402 == f20847354cb6335fd349204f16021a72e2956cce]
generate a thousand saved-game files of randomly generated puzzles.
On the general principle that if I find it useful someone else
conceivably might too, add a --save option to the Unix puzzle
binaries, for use with --generate in much the same way as --print.
[originally from svn r8351]
Lambrou. Now capable of handling triangular and hexagonal grids as
well as square ones, and then a number of semiregular plane tilings
and duals of semiregular ones. In fact, most of the solver code
supports an _arbitrary_ planar graph (well, provided both the graph
and its dual have no self-edges), so it could easily be extended
further with only a little more effort.
[originally from svn r8162]
(require both main diagonals to have one of every digit in addition
to all the usual constraints) and Jigsaw Sudoku (replace the array
of rectangular sub-blocks with the sub-blocks being random
polyominoes). To implement the latter, I've moved my `divvy.c'
library routine out of the `unfinished' subdirectory.
Jigsaw mode is currently an undocumented feature: you enable it by
setting the rows parameter to 1 (and the columns parameter to your
desired grid size, which unlike normal Sudoku can be anything you
like including a prime number). The reason it's undocumented is
because generation times are not yet reliably short: sometimes
generating a jigsaw-type puzzle can hang for hours and still get
nowhere. (The algorithm should terminate in principle, but not in
any time you're prepared to wait.) I _think_ I know how to solve
this, but have yet to try it. Until then, jigsaw mode will remain a
hidden feature.
Printing of X-type puzzles is also substandard at present, because
the current print-colour API replaces the desired light shading of
the X-cells with heavy diagonal hatching. I plan to adjust the API
imminently to address this.
[originally from svn r7974]
(This change adds a new possibility to the save format, such that new save
files won't necessarily be loadable by old binaries. I think that's acceptable
-- it's certainly happened before -- but I couldn't find anything in the
developer docs explicitly blessing it.)
[originally from svn r7849]
maxflow.c. Also in this checkin, fixes to the OS X and GTK back ends
to get ALIGN_VNORMAL right. This is the first time I've used it! :-)
[originally from svn r6390]
it had a command-line solver. In order to do this, I've had to
expose the internal region numbering because the solver has to have
some way to state which region it means; and in any case it's also
useful to have human-visible region numbering so that two people can
discuss a puzzle they're solving together. So pressing L during play
now toggles the display of region numbers; and `mapsolver' uses
those same numbers when showing its working and its solutions.
[originally from svn r6244]
