New puzzle: Dominosa.

[originally from svn r6091]

Recipe

@@ -22,7 +22,7 @@ FLIP     = flip tree234
 PEGS     = pegs tree234
 
 ALL      = list NET NETSLIDE cube fifteen sixteen rect pattern solo twiddle
-         + MINES samegame FLIP guess PEGS
+         + MINES samegame FLIP guess PEGS dominosa
 
 net      : [X] gtk COMMON NET
 netslide : [X] gtk COMMON NETSLIDE
@@ -38,6 +38,7 @@ samegame : [X] gtk COMMON samegame
 flip     : [X] gtk COMMON FLIP
 guess    : [X] gtk COMMON guess
 pegs     : [X] gtk COMMON PEGS
+dominosa : [X] gtk COMMON dominosa
 
 # Auxiliary command-line programs.
 solosolver :    [U] solo[STANDALONE_SOLVER] malloc
@@ -64,6 +65,7 @@ samegame : [G] WINDOWS COMMON samegame
 flip     : [G] WINDOWS COMMON FLIP
 guess    : [G] WINDOWS COMMON guess
 pegs     : [G] WINDOWS COMMON PEGS
+dominosa : [G] WINDOWS COMMON dominosa
 
 # Mac OS X unified application containing all the puzzles.
 Puzzles  : [MX] osx osx.icns osx-info.plist COMMON ALL
@@ -155,7 +157,7 @@ FORCE:
 install:
 	for i in cube net netslide fifteen sixteen twiddle \
 	         pattern rect solo mines samegame flip guess \
-		 pegs; do \
+		 pegs dominosa; do \
 		$(INSTALL_PROGRAM) -m 755 $$i $(DESTDIR)$(gamesdir)/$$i; \
 	done
 !end

list.c

@@ -18,6 +18,7 @@ echo -e '};\n\nconst int gamecount = lenof(gamelist);'
  */
 
 extern const game cube;
+extern const game dominosa;
 extern const game fifteen;
 extern const game flip;
 extern const game guess;
@@ -34,6 +35,7 @@ extern const game twiddle;
 
 const game *gamelist[] = {
     &cube,
+    &dominosa,
     &fifteen,
     &flip,
     &guess,

puzzles.but

@@ -1193,6 +1193,56 @@ Selecting \q{Random} will give you a different board shape every
 time (but always one that is known to have a solution).
 
 
+\C{dominosa} \i{Dominosa}
+
+\cfg{winhelp-topic}{games.dominosa}
+
+A normal set of dominoes has been arranged irregularly into a
+rectangle; then the number in each square has been written down and
+the dominoes themselves removed. Your task is to reconstruct the
+pattern by arranging the set of dominoes to match the provided array
+of numbers.
+
+This puzzle is widely credited to O. S. Adler, and takes part of its
+name from those initials.
+
+\H{dominosa-controls} \i{Dominosa controls}
+
+\IM{Dominosa controls} controls, for Dominosa
+
+Left-clicking between any two adjacent numbers places a domino
+covering them, or removes one if it is already present. Trying to
+place a domino which overlaps existing dominoes will remove the ones
+it overlaps.
+
+Right-clicking between two adjacent numbers draws a line between
+them, which you can use to remind yourself that you know those two
+numbers are \e{not} covered by a single domino. Right-clicking again
+removes the line.
+
+
+\H{dominosa-parameters} \I{parameters, for Dominosa}Dominosa parameters
+
+These parameters are available from the \q{Custom...} option on the
+\q{Type} menu.
+
+\dt \e{Maximum number on dominoes}
+
+\dd Controls the size of the puzzle, by controlling the size of the
+set of dominoes used to make it. Dominoes with numbers going up to N
+will give rise to an (N+2) \by (N+1) rectangle; so, in particular,
+the default value of 6 gives an 8\by\.7 grid.
+
+\dt \e{Ensure unique solution}
+
+\dd Normally, Dominosa will make sure that the puzzles it presents
+have only one solution. Puzzles with ambiguous sections can be more
+difficult and sometimes more subtle, so if you like you can turn off
+this feature. 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.
+
+
 \A{licence} \I{MIT licence}\ii{Licence}
 
 This software is \i{copyright} 2004-2005 Simon Tatham.