New puzzle from James Harvey: 'Singles', an implementation of

[sgt/puzzles] / puzzles.but

diff --git a/puzzles.but b/puzzles.but
index 204aa7e..f67194f 100644 (file)
--- a/puzzles.but
+++ b/puzzles.but
@@ -2651,6 +2651,57 @@ level, some backtracking will be required, but the solution should
 still be unique. The remaining levels require increasingly complex
 reasoning to avoid having to backtrack.
 
 still be unique. The remaining levels require increasingly complex
 reasoning to avoid having to backtrack.
 

+
+\C{singles} \i{Singles}
+
+\cfg{winhelp-topic}{games.singles}
+
+You have a grid of squares, all of which contain numbers. Your task
+is to colour some of the squares black (removing the number) so as to satisfy
+all of the following conditions:
+
+\b No number occurs more than once in any row or column.
+
+\b No black square is horizontally adjacent to any other black square.
+
+\b The remaining white squares must all form one contiguous region.
+
+Credit for this puzzle goes to \i{Nikoli} \k{nikoli-singles} who call it Hitori. 
+
+Singles was contributed to this collection by James Harvey.
+
+\B{nikoli-hitori}
+\W{http://www.nikoli.com/en/puzzles/hitori/index.html}\cw{http://www.nikoli.com/en/puzzles/hitori/index.html}
+(beware of Flash)
+
+\H{singles-controls} \i{Singles controls}
+
+\IM{Singles controls} controls, for Singles
+
+Left-clicking on an empty square will colour it black; left-clicking again 
+will replace the number. Right-clicking will add a circle (useful for 
+indicating that a cell is definitely not black). 
+
+You can also use the cursor keys to move around the grid. Pressing the
+return or space keys will turn a square black or add a circle respectively,
+and pressing the key again will replace the number or remove the circle.
+
+(All the actions described in \k{common-actions} are also available.)
+
+\H{singles-parameters} \I{parameters, for Singles}Singles parameters
+
+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.
+
+\dt \e{Difficulty}
+
+\dd Controls the difficulty of the generated puzzle.
+
+

 \A{licence} \I{MIT licence}\ii{Licence}
 
 This software is \i{copyright} 2004-2010 Simon Tatham.
 \A{licence} \I{MIT licence}\ii{Licence}
 
 This software is \i{copyright} 2004-2010 Simon Tatham.