Mention NetWalk and update comment

[sgt/puzzles] / puzzles.but

diff --git a/puzzles.but b/puzzles.but
index 44bdb25..1faa9e8 100644 (file)
--- a/puzzles.but
+++ b/puzzles.but
@@ -286,12 +286,14 @@ missing. See \k{common-id} for more details on this.)
 \i\cw{NETGAME.EXE} to avoid clashing with Windows's own \cw{NET.EXE}.)
 
 I originally saw this in the form of a Flash game called \i{FreeNet}
-\k{FreeNet}, written by Pavils Jurjans. The computer prepares a
+\k{FreeNet}, written by Pavils Jurjans; there are several other
+implementations under the name \i{NetWalk}. The computer prepares a
 network by connecting up the centres of squares in a grid, and then
 shuffles the network by rotating every tile randomly. Your job is to
 rotate it all back into place. The successful solution will be an
-entirely connected network, with no closed loops. \#{Is it also true
-that a correct solution will not contain any cycles?} As a visual aid,
+entirely connected network, with no closed loops. \#{The latter
+clause means that there are no closed paths within the network.
+Could this be clearer? "No closed paths"?} As a visual aid,
 all tiles which are connected to the one in the middle are
 highlighted. 
 
@@ -361,6 +363,15 @@ from the original Net window.
 
 }
 
+\dt \e{Ensure unique solution}
+
+\dd Normally, Net will make sure that the puzzles it presents have
+only one solution. Puzzles with ambiguous sections can be more
+difficult and more subtle, so if you like you can turn off this
+feature and risk having ambiguous puzzles. (Also, finding \e{all}
+the possible solutions can be an additional challenge for an
+advanced player.)
+
 \C{cube} \i{Cube}
 
 \cfg{winhelp-topic}{games.cube}
@@ -604,15 +615,23 @@ When a rectangle of the correct size is completed, it will be shaded.
 
 \H{rectangles-params} \I{parameters, for Rectangles}Rectangles parameters
 
-The \q{Custom...} option on the \q{Type} menu offers you \e{Width}
-and \e{Height} parameters, which are self-explanatory.
+These parameters are available from the \q{Custom...} option on the
+\q{Type} menu.
+
+\dt \e{Width}, \e{Height}
+
+\dd Size of grid, in squares.
 
-\q{Expansion factor} is a mechanism for changing the type of grids
-generated by the program. Some people prefer a grid containing a few
-large rectangles to one containing many small ones. So you can ask
+\dt \e{Expansion factor}
+
+\dd This is a mechanism for changing the type of grids generated by
+the program. Some people prefer a grid containing a few large
+rectangles to one containing many small ones. So you can ask
 Rectangles to essentially generate a \e{smaller} grid than the size
 you specified, and then to expand it by adding rows and columns.
 
+\lcont{
+
 The default expansion factor of zero means that Rectangles will
 simply generate a grid of the size you ask for, and do nothing
 further. If you set an expansion factor of (say) 0.5, it means that
@@ -627,6 +646,17 @@ and more intuitive playing style. If you set it \e{too} high,
 though, the game simply cannot generate more than a few rectangles
 to cover the entire grid, and the game becomes trivial.
 
+}
+
+\dt \e{Ensure unique solution}
+
+\dd Normally, Rectangles will make sure that the puzzles it presents
+have only one solution. Puzzles with ambiguous sections can be more
+difficult and more subtle, so if you like you can turn off this
+feature and risk having ambiguous puzzles. Also, finding \e{all} the
+possible solutions can be an additional challenge for an advanced
+player. Turning off this option can also speed up puzzle generation.
+
 
 \C{netslide} \i{Netslide}