Some attempt to explain Dominosa for those unfamiliar with dominos. (Not sure

I've succeeded.)

[originally from svn r6120]

diff --git a/puzzles.but b/puzzles.but
index 5f3f2a9915e3ea77a738225ea3356fad0dc21f56..9949da44bceb5beea4040bac60c22bb053f0e6a6 100644 (file)
--- a/puzzles.but
+++ b/puzzles.but
@@ -1197,7 +1197,8 @@ time (but always one that is known to have a solution).
 
 \cfg{winhelp-topic}{games.dominosa}
 
-A normal set of dominoes has been arranged irregularly into a
+A normal set of dominoes - that is, one instance of every (unordered)
+pair of numbers from 0 to 6 - 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